Arcam AB

Sweden

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2024 (YTD) 1
2023 1
2022 14
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IPC Class
B33Y 10/00 - Processes of additive manufacturing 79
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor 74
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma 63
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes 63
B23K 15/00 - Electron-beam welding or cutting 47
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Status
Pending 17
Registered / In Force 99
Found results for  patents
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1.

DEVICES, SYSTEMS, AND METHODS FOR MONITORING A SPOT QUALITY OF AN ELECTRON BEAM

      
Application Number 17897294
Status Pending
Filing Date 2022-08-29
First Publication Date 2024-02-29
Owner Arcam AB (Sweden)
Inventor
  • Jonnor, Jimmie
  • Hellgren, Jonas

Abstract

A method of monitoring a spot quality of an electron beam includes directing the electron beam to a first measurement point in a powder layer a plurality of times, adjusting a focus offset of the electron beam each of the plurality of times the electron beam is directed to the first measurement point, measuring x-ray emissions from the first measurement point each of the plurality of times the electron beam is directed to the first measurement point, and determining a drift in a focus or an intensity of the electron beam based on the measured x-ray emissions.

IPC Classes  ?

  • B22F 10/36 - Process control of energy beam parameters
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 12/30 - Platforms or substrates
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

2.

Devices, systems, and methods for monitoring a powder layer in additive manufacturing processes

      
Application Number 18077381
Grant Number 11999102
Status In Force
Filing Date 2022-12-08
First Publication Date 2023-04-06
Grant Date 2024-06-04
Owner Arcam AB (Sweden)
Inventor
  • Löfving, Björn
  • Karlsson, Kristofer

Abstract

Devices, systems, and methods for monitoring a powder layer in additive manufacturing are disclosed. A method of monitoring a powder layer includes receiving image data corresponding the powder layer supported by a powder bed within a build chamber from imaging devices, determining leading and trailing regions of interest located adjacent to a leading end and a trailing end of the moving powder distributor, respectively, the leading and trailing regions of interest moving according to movement of the moving powder distributor, selecting at least one point located in the leading region of interest from the image data, determining first characteristics of the point, when the point is located within the trailing region of interest, determining second characteristics of the point, and comparing the first characteristics to the second characteristics.

IPC Classes  ?

  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/37 - Process control of powder bed aspects, e.g. density
  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 12/60 - Planarisation devices; Compression devices
  • B22F 12/67 - Blades
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B33Y 10/00 - Processes of additive manufacturing
  • G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
  • B22F 10/10 - Formation of a green body
  • B22F 10/32 - Process control of the atmosphere, e.g. composition or pressure in a building chamber
  • B22F 10/368 - Temperature or temperature gradient, e.g. temperature of the melt pool
  • B22F 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
  • B22F 12/52 - Hoppers
  • B22F 12/55 - Two or more means for feeding material
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

3.

DEVICES, SYSTEMS, AND METHODS FOR CALIBRATING AND OPERATING AN ADDITIVE MANUFACTURING SYSTEM HAVING A PLURALITY OF ELECTRON BEAM GUNS

      
Application Number 17349997
Status Pending
Filing Date 2021-06-17
First Publication Date 2022-12-22
Owner ARCAM AB (Sweden)
Inventor Snis, Anders

Abstract

Devices, systems and methods for calibrating and operating an additive manufacturing system are disclosed. A calibration system for an electron beam additive manufacturing system having a plurality of electron beam guns includes a calibration probe positioned in a build chamber of the electron beam additive manufacturing system, a sensing device positioned to measure and acquire a response generated as a result of impingement of electron beams emitted from the plurality of electron beam guns on the calibration probe, the sensing device generating a response signal as a result of the measured and acquired response, and an analysis component communicatively coupled to the sensing device and programmed to analyze and evaluate the response signal.

IPC Classes  ?

  • B22F 10/31 - Calibration of process steps or apparatus settings, e.g. before or during manufacturing
  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 12/30 - Platforms or substrates
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B22F 12/45 - Two or more
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

4.

Devices, systems, and methods for using an imaging device to calibrate and operate a plurality of electron beam guns in an additive manufacturing system

      
Application Number 17350026
Grant Number 11925983
Status In Force
Filing Date 2021-06-17
First Publication Date 2022-12-22
Grant Date 2024-03-12
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

Calibration systems, additive manufacturing systems employing the same, and methods of calibrating include a plurality of electron beam guns. One calibration system includes an imaging device positioned to capture one or more images of an impingement of electron beams emitted from the plurality of electron beam guns on a surface within a build chamber of the electron beam additive manufacturing system and an analysis component communicatively coupled to the imaging device. The analysis component is programmed to receive image data corresponding to the one or more images, determine one or more calibration parameters from the image data, and transmit one or more instructions to the plurality of electron beam guns in accordance with the one or more calibration parameters.

IPC Classes  ?

  • B22F 10/31 - Calibration of process steps or apparatus settings, e.g. before or during manufacturing
  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 12/33 - Platforms or substrates translatory in the deposition plane
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B22F 12/45 - Two or more
  • B22F 12/52 - Hoppers
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • H01J 37/22 - Optical or photographic arrangements associated with the tube
  • H01J 37/304 - Controlling tubes by information coming from the objects, e.g. correction signals
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]

5.

DEVICES, SYSTEMS, AND METHODS FOR CALIBRATING AND MAINTAINING A TEMPERATURE OF MATERIALS IN AN ADDITIVE MANUFACTURING BUILD CHAMBER

      
Application Number 17348312
Status Pending
Filing Date 2021-06-15
First Publication Date 2022-12-15
Owner ARCAM AB (Sweden)
Inventor
  • Lock, Tomas
  • Löfving, Björn

Abstract

Devices, systems, and methods for calibrating for an electron beam additive manufacturing system. The electron beam manufacturing system includes electron beam guns. A calibration system includes an optical pyrometer. The optical pyrometer captures thermal radiation emitted from raw material. An analysis component is communicatively coupled to the optical pyrometer. The analysis component is programmed to determine calibration parameters from information from the optical pyrometer and a phase transition temperature.

IPC Classes  ?

  • B22F 10/31 - Calibration of process steps or apparatus settings, e.g. before or during manufacturing
  • B23K 15/00 - Electron-beam welding or cutting
  • G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry
  • G01J 5/20 - Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using resistors, thermistors or semiconductors sensitive to radiation, e.g. photoconductive devices
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/00 - Data acquisition or data processing for additive manufacturing
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B22F 10/80 - Data acquisition or data processing

6.

Raw material delivery devices and methods of operating the same

      
Application Number 17329967
Grant Number 11932494
Status In Force
Filing Date 2021-05-25
First Publication Date 2022-12-01
Grant Date 2024-03-19
Owner Arcam AB (Sweden)
Inventor
  • Hansson, Karl
  • Karlsson, Peter

Abstract

Raw material devices, systems that incorporate raw material delivery devices, and methods of supplying raw material using the raw material devices. A raw material delivery device includes a hollow body comprising a first end and a second end, the second end disposed above the first end in a system vertical direction, an inlet disposed at the first end of the hollow body, an outlet disposed at the second end of the hollow body, and a stepped passageway disposed within the hollow body between the inlet and the outlet. The stepped passageway is configured to deliver raw material via one or more steps from the inlet to the outlet.

IPC Classes  ?

  • B65G 27/12 - Applications of devices for generating or transmitting jigging movements of shaking devices, i.e. devices for producing movements of low frequency and large amplitude
  • B22F 12/50 - Means for feeding of material, e.g. heads
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/10 - Pre-treatment
  • B65G 27/02 - Jigging conveyors comprising helical or spiral channels or conduits for elevation of materials

7.

Method and device for distributing powder material

      
Application Number 17852759
Grant Number 11724316
Status In Force
Filing Date 2022-06-29
First Publication Date 2022-10-27
Grant Date 2023-08-15
Owner Arcam AB (Sweden)
Inventor Karlsson, Kristofer

Abstract

Described is an additive manufacturing apparatus for additive manufacturing of three dimensional objects, said apparatus comprises a powder distribution unit movable across a build area for applying a layer of powder material thereon and a solidification device for selectively solidifying the applied powder layer at positions corresponding to a cross section of the object to be manufactured. Said powder distribution unit comprises at least a first and a second powder distributors essentially in parallel with each other and extending in a first direction, said first and second powder distributors are arranged to be adjustably spaced apart in a second direction transversely to said first direction which second direction is essentially in parallel with the direction of movement of said powder distribution unit over said build area.

IPC Classes  ?

  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B22F 12/67 - Blades
  • B22F 12/49 - Scanners
  • B22F 12/63 - Rollers
  • B22F 1/052 - Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

8.

Verification plates with automated evaluation of melt performance

      
Application Number 17175115
Grant Number 11733187
Status In Force
Filing Date 2021-02-12
First Publication Date 2022-08-18
Grant Date 2023-08-22
Owner Arcam AB (Sweden)
Inventor
  • Svensson, David
  • Mahoney, Phillip Simon

Abstract

An electron beam additive manufacturing system includes an electron beam source, an x-ray detection sensor configured to generate a waveform corresponding to an amount of x-rays detected by the x-ray detection sensor, and an electronic control unit comprising a processor and a non-transitory computer-readable memory, the electronic control unit communicatively coupled to the electron beam source and the x-ray detection sensor. The electronic control unit is configured to cause the electron beam source to emit an electron beam such that the electron beam impinges a verification plate, receive the waveform generated by the x-ray detection sensor in response to the x-ray detection sensor capturing x-rays emitted from the impingement of the electron beam with the verification plate, and determine a melt performance of a surface material of the verification plate based on the waveform.

IPC Classes  ?

  • G01N 23/225 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by measuring secondary emission from the material using electron or ion microprobes
  • H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
  • H01J 37/244 - Detectors; Associated components or circuits therefor
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B22F 10/36 - Process control of energy beam parameters
  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 10/31 - Calibration of process steps or apparatus settings, e.g. before or during manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 10/00 - Processes of additive manufacturing
  • B23K 15/00 - Electron-beam welding or cutting
  • G01N 23/2252 - Measuring emitted X-rays, e.g. electron probe microanalysis [EPMA]

9.

Adjustable guide systems

      
Application Number 17127124
Grant Number 11981071
Status In Force
Filing Date 2020-12-18
First Publication Date 2022-06-23
Grant Date 2024-05-14
Owner Arcam AB (Sweden)
Inventor Hansson, Karl

Abstract

Adjustable guide systems and additive manufacturing systems incorporating the same are disclosed. An adjustable guide system includes a first arm support coupled to a first end of a powder distributor in an additive manufacturing system, a second arm support coupled to a second end of the powder distributor opposite the first end, a plurality of shuttles, and a plurality of guide rails. Each one of the plurality of shuttles is pivotally coupled to the first arm support or the second arm support via one or more link arms. Each one of the plurality of guide rails supports a corresponding one of the plurality of shuttles thereon and allows each shuttle to move along the respective guide rail.

IPC Classes  ?

  • B29C 64/00 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
  • B22F 12/33 - Platforms or substrates translatory in the deposition plane
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

10.

METHOD AND DEVICE FOR PRODUCING THREE-DIMENSIONAL OBJECTS

      
Application Number 17682226
Status Pending
Filing Date 2022-02-28
First Publication Date 2022-06-09
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

A method for producing three-dimensional objects layer by layer using a powdery material which can be solidified by irradiating it with at least two electron beams, said method comprises a pre-heating step, wherein the pre-heating step comprises the sub-step of scanning a pre-heating powder layer area (100) by scanning a first electron beam in a first region (I) and by scanning a second electron beam in a second region (II) distributed over the pre-heating powder layer area (100), wherein consecutively scanned paths are separated by, at least, a security distance (ΔY), said sub-step further comprising the step of synchronising the preheating of said first and second electron beams when simultaneously preheating said powder material within said first and second regions respectively, so that said first and second electron beams are always separated to each other with at least a minimum security distance (ΔX).

IPC Classes  ?

  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B23K 15/00 - Electron-beam welding or cutting
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]
  • B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
  • B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
  • B22F 3/10 - Sintering only
  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece

11.

METHOD AND APPARATUS FOR PROVIDING ILLUMINATION IN AN ADDITIVE MANUFACTURING PROCESS

      
Application Number 17416185
Status Pending
Filing Date 2019-03-04
First Publication Date 2022-05-12
Owner Arcam AB (Sweden)
Inventor Hellgren, Jonas

Abstract

An apparatus for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts corresponds to successive cross sections of the three-dimensional article, the apparatus comprising: a powder distributor configured for evenly distributing a layer of powder on top of a work table provided inside a build chamber; and at least one high energy beam source emanating at least one high energy beam configured for fusing the powder layer in selected locations corresponding to the cross section of the three-dimensional article, wherein the apparatus further comprising at least one target area arranged spaced apart from the layer of powder for emanating light when irradiated by the at least one high energy beam.

IPC Classes  ?

  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B22F 12/49 - Scanners
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B23K 26/046 - Automatically focusing the laser beam
  • H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

12.

BLAST NOZZLES FOR ADDITIVE MANUFACTURING AND METHODS FOR USING THE SAME

      
Application Number 17089835
Status Pending
Filing Date 2020-11-05
First Publication Date 2022-05-05
Owner Arcam AB (Sweden)
Inventor
  • Olausson, Stefan
  • Sjölander, Håkan

Abstract

A blast nozzle for a depowdering apparatus includes an abrasive material inlet fluidly connected to an abrasive material outlet and a fluid inlet fluidly connected to a fluid outlet, where the fluid outlet at least partially surrounds the abrasive material outlet. The fluid outlet is angled with respect to the abrasive material outlet and configured to emit a fluid stream directed to a focal point, the focal point being laterally spaced apart from the blast nozzle in a fluid flow direction.

IPC Classes  ?

  • B29C 64/35 - Cleaning
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B24C 1/08 - Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. by making use of liquid-borne abrasives

13.

SYSTEMS AND METHODS FOR WELD TAPERING AT A TRAILING EDGE USING TIME MULTIPLEXING

      
Application Number 17504016
Status Pending
Filing Date 2021-10-18
First Publication Date 2022-04-21
Owner Arcam AB (Sweden)
Inventor
  • Fager, Mattias
  • Blomé, Simon
  • Haglund, Linus
  • Ålgårdh, Joakim
  • Dahl, Alexander

Abstract

Systems, apparatus, and methods for weld tapering at a trailing edge using time multiplexing are disclosed. Systems, apparatus, and methods for control of an electron beam for welding using time multiplexing are disclosed. An example apparatus includes memory and at least one processor to execute instructions to at least: in a first portion of a line of an object being formed, control an energy beam at a first position at a first time to form a weld from a powder; and in a second portion of a line of the object being formed, control the energy beam to perform a dispersion sweep at a second position at a second time.

IPC Classes  ?

  • B22F 12/47 - Radiation means with translatory movement parallel to the deposition plane
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B22F 10/36 - Process control of energy beam parameters
  • B23K 15/00 - Electron-beam welding or cutting
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

14.

Method and apparatus for additive manufacturing

      
Application Number 17509562
Grant Number 11993008
Status In Force
Filing Date 2021-10-25
First Publication Date 2022-02-10
Grant Date 2024-05-28
Owner ARCAM AB (Sweden)
Inventor Hellestam, Calle

Abstract

A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed on a support structure, the method comprising the steps of: providing at least one model of the three-dimensional article, lowering the support structure a predetermined distance and rotating the support structure a predetermined angle in a first direction before applying a first powder layer covering the lowered and rotated support structure, rotating the support structure the predetermined angle in a second direction opposite to the first direction before directing the at least one first energy beam from the at least one first energy beam source at selected locations of the first powder layer, the at least one first energy beam source causing the first powder layer on the stationary support structure which is stationary to fuse in the selected locations according to the model to form first portions of the three-dimensional article.

IPC Classes  ?

  • B29C 64/241 - Driving means for rotary motion
  • B22F 3/10 - Sintering only
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/362 - Process control of energy beam parameters for preheating
  • B22F 12/37 - Rotatable
  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/245 - Platforms or substrates
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 10/32 - Process control of the atmosphere, e.g. composition or pressure in a building chamber
  • B22F 10/36 - Process control of energy beam parameters
  • B22F 12/13 - Auxiliary heating means to preheat the material
  • B22F 12/52 - Hoppers
  • B22F 12/55 - Two or more means for feeding material
  • B22F 12/90 - Means for process control, e.g. cameras or sensors

15.

A METHOD FOR ESTIMATING A POWDER LAYER THICKNESS

      
Application Number 17416232
Status Pending
Filing Date 2019-03-04
First Publication Date 2022-02-10
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

Disclosed herein are methods for estimating a powder layer thickness in an additive manufacturing machine when forming a three-dimensional article layer by layer. The method comprises applying a first powder layer and selectively melting the first powder layer and thereafter measuring the temperature of the first powder layer at a plurality of times. The method further comprises providing a mathematical function giving a reference temperature as a function of time based on the measured temperatures of the first powder layer, applying a second powder layer on top of the first powder layer and measuring the temperature of the second powder layer at a predetermined time, and estimating the powder layer thickness of the second powder layer based on the measured temperature of the second powder layer and the reference temperature calculated by means of the mathematical function for the predetermined time point.

IPC Classes  ?

  • G01B 21/08 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
  • B22F 10/20 - Direct sintering or melting
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B22F 10/30 - Process control
  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

16.

APPARATUS AND METHOD FOR FORMING A THREE-DIMENSIONAL ARTICLE

      
Application Number 17296590
Status Pending
Filing Date 2019-03-01
First Publication Date 2022-01-06
Owner Arcam AB (Sweden)
Inventor
  • Karlsson, Kristofer
  • Ali, Safdar

Abstract

An apparatus for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together with an electron beam from an electron beam source so as to form the article according to a computer model thereof. The apparatus includes a chamber a chamber having a first section and a second section openly connected to each other. The first section is configured to receive the individual layers of powder material. The second section comprising an electron beam source, an electromagnetic focus coil having an axially extending, and a reflector coil. The electron beam source is configured to emit an electron beam to fuse the individual layers of powder material. The reflector coil is arranged radially outside the electromagnetic focus coil. The direction of windings of the reflector coil is opposite a direction of windings of the electromagnetic focus coil.

IPC Classes  ?

  • B22F 10/368 - Temperature or temperature gradient, e.g. temperature of the melt pool
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • H01J 37/21 - Means for adjusting the focus
  • H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
  • H01J 37/09 - Diaphragms; Shields associated with electron- or ion-optical arrangements; Compensation of disturbing fields

17.

Method, apparatus and control unit for selectively sintering a powder layer in additive manufacturing processes to achieve a future, desired heat conductivity

      
Application Number 16915276
Grant Number 11925981
Status In Force
Filing Date 2020-06-29
First Publication Date 2021-12-30
Grant Date 2024-03-12
Owner Arcam AB (Sweden)
Inventor Hellestam, Carl

Abstract

Devices, systems, and methods for selectively sintering a powder layer in additive manufacturing processes to achieve a desired heat conductivity are disclosed. A method includes distributing a powder layer in a build chamber, selectively sintering the powder layer to form a plurality of sintered areas and a plurality of non-sintered areas based on a thermal model, and melting a subset of the plurality of sintered areas.

IPC Classes  ?

  • B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
  • B22F 1/142 - Thermal or thermo-mechanical treatment
  • B22F 10/10 - Formation of a green body
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]
  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/10 - Pre-treatment
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

18.

A METHOD FOR CONTROLLING AN ENERGY BEAM

      
Application Number 17292278
Status Pending
Filing Date 2019-02-28
First Publication Date 2021-12-30
Owner Arcam AB (Sweden)
Inventor Backlund, Johan

Abstract

A method for controlling an energy beam in an additive manufacturing machine when forming a three-dimensional article layer by layer by successive fusion of selected areas of powder layers, which selected areas correspond to successive layers of the article. The method includes steps of radiating a powder layer by the energy beam and creating a set of images of the powder layer for a set of positions on the powder layer by detecting particles emitted, backscattered or reflected from the powder layer when being radiated, comparing data representing the set of images and reference data with each other for identifying a difference between the energy beam when used on the powder layer and the reference data, with respect to at least one energy beam parameter, and adjusting the energy beam based on such an identified difference between the energy beam when used on the powder layer and the reference data.

IPC Classes  ?

  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B22F 10/362 - Process control of energy beam parameters for preheating
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/10 - Pre-treatment
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

19.

METHOD AND DEVICE FOR VIEWING AND/OR ILLUMINATING A TARGET SURFACE IN AN EVACUATED CHAMBER HAVING CONDENSABLE VAPOR THEREIN

      
Application Number 17287760
Status Pending
Filing Date 2019-04-02
First Publication Date 2021-12-23
Owner ARCAM AB (Sweden)
Inventor
  • Lock, Tomas
  • Löfving, Björn
  • Ramsperger, Markus

Abstract

A device for viewing and/or illuminating a target surface in an evacuated chamber having condensable vapor therein, the device comprising: a first section with a through hole having a first end with a first opening and a second end with a second opening; and a second section having a chamber comprising a first portion with a first opening, a second portion with a second opening and a gas inlet, where the second opening is covered with a first window, said first section is attached with the first end to the first portion of the chamber allowing free passage between the chamber and the first section, said gas inlet is connectable to a gas reservoir for feeding a gas into the chamber for prohibiting the first window in the chamber for being contaminated of the condensable vapor.

IPC Classes  ?

  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 10/70 - Recycling
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 12/82 - Combination of additive manufacturing apparatus or devices with other processing apparatus or devices

20.

Methods for detecting a position of an energy beam spot and apparatuses for performing the same

      
Application Number 16871480
Grant Number 11493650
Status In Force
Filing Date 2020-05-11
First Publication Date 2021-11-11
Grant Date 2022-11-08
Owner Arcam AB (Sweden)
Inventor Svensson, David

Abstract

A method for detecting a position of an energy beam comprises mapping a first density modulated x-ray signal with a plurality of locations on an energy beam target, thereby generating a model of a background x-ray intensity. The method further comprises forming an x-ray signal time series using subsequent intensity modulated x-ray signals, each resulting from scanning the energy beam along the energy beam target in one of a plurality of directions at one of a plurality of speeds, and determining the position of the energy beam based upon a received x-ray signal strength based on the x-ray signal time series and the model of the background x-ray intensity.

IPC Classes  ?

  • G01T 1/29 - Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B23K 15/00 - Electron-beam welding or cutting

21.

METHOD FOR ADDITIVE MANUFACTURING

      
Application Number 17243819
Status Pending
Filing Date 2021-04-29
First Publication Date 2021-08-26
Owner Arcam AB (Sweden)
Inventor
  • Elfstroem, Isak
  • Fager, Mattias

Abstract

Various embodiments of the present invention relate to a method of using of a focus lens in additive manufacturing for forming a three-dimensional article through successive fusion, with a high energy beam, of parts of at least one layer of a powder bed provided on a work table, which parts correspond to successive cross sections of the three dimensional article, said method comprising the step of: using said focus lens for varying a spot size of said high energy beam on said powder bed as a function of an already fused thickness of said three-dimensional article below said powder which is to be fused. The invention is also related to a method for forming a three dimensional article.

IPC Classes  ?

  • B22F 10/20 - Direct sintering or melting
  • G05B 15/02 - Systems controlled by a computer electric
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

22.

METHOD AND DEVICE FOR ADDITIVE MANUFACTURING

      
Application Number 17079975
Status Pending
Filing Date 2019-02-26
First Publication Date 2021-08-12
Owner ARCAM AB (Sweden)
Inventor
  • Löwgren, Lars
  • Karlsson, Kristofer

Abstract

Provided is an additive manufacturing apparatus for additive manufacturing of three dimensional objects by selectively solidifying a powder material layer by layer in a process chamber, wherein the apparatus comprises a powder distributor movable across a build area of a build tank for applying a layer of powder material thereon and a solidification device for selectively solidifying the applied powder layer at positions corresponding to a cross section of the object to be manufactured and a control unit adapted to repeat the steps of applying and selectively solidifying until the object is completed, wherein at least one support structure for supporting the powder distributor and/or a bellows assembly associated there-with is connectable to a cooling/heating media supply outside the process chamber and the support structure and/or the bellows assembly is adapted for transporting the cooling/heating media to and from the powder distributor. Certain embodiments further or alternatively include a bellows assembly connected or connectable to a cooling/heating media supply positioned outside the process chamber, the bellows assembly being configured for transporting the cooling/heating media to and from the powder distributor.

IPC Classes  ?

  • B22F 12/20 - Cooling means
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/30 - Process control
  • B22F 12/50 - Means for feeding of material, e.g. heads
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

23.

ADDITIVE MANUFACTURING APPARATUSES WITH SEPARABLE PROCESS CHAMBER HOUSING PORTIONS AND METHODS OF USE

      
Application Number 16712619
Status Pending
Filing Date 2019-12-12
First Publication Date 2021-06-17
Owner ARCAM AB (Sweden)
Inventor Karlsson, Kristofer

Abstract

An additive manufacturing apparatus includes a process chamber housing enclosing a process chamber. The process chamber housing includes a first separable process chamber housing portion and a second separable process chamber housing portion. The first separable process chamber housing portion includes a top of the process chamber housing and the second separable process chamber housing portion includes a bottom of the process chamber housing. The first separable process chamber housing portion meets the second separable process chamber housing portion at a junction that extends about a periphery of the process chamber housing portion in a closed configuration. The process chamber housing has an open configuration where the first separable process housing portion and the second separable process housing portion are separated to provide an access spacing between the first separable housing portion and the second separable housing portion.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

24.

Additive manufacturing apparatuses with powder distributors and methods of use

      
Application Number 16712635
Grant Number 11534967
Status In Force
Filing Date 2019-12-12
First Publication Date 2021-06-17
Grant Date 2022-12-27
Owner Arcam AB (Sweden)
Inventor Karlsson, Kristofer

Abstract

An additive manufacturing apparatus for forming a three-dimensional article through successive fusion of parts of layers of a powder material, which parts correspond to successive cross-sections of the three-dimensional article includes a process chamber housing enclosing a process chamber. A rotatable support conveyor is rotatably connected to a bottom of the process chamber housing by a rotatable shaft. The rotatable support conveyor includes an opening that extends therethrough for dispensing powder material from a powder storage vessel located on the rotatable support conveyor and a powder distributor that includes a rake portion that is located between the rotatable support conveyor and the bottom of the process chamber housing.

IPC Classes  ?

  • B29C 64/205 - Means for applying layers
  • B29C 64/241 - Driving means for rotary motion
  • B29C 64/25 - Housings, e.g. machine housings
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/245 - Platforms or substrates
  • B29C 64/255 - Enclosures for the building material, e.g. powder containers
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 10/00 - Processes of additive manufacturing

25.

Depowdering apparatuses for additive manufacturing and methods for using the same

      
Application Number 16684696
Grant Number 11273607
Status In Force
Filing Date 2019-11-15
First Publication Date 2021-05-20
Grant Date 2022-03-15
Owner ARCAM AB (Sweden)
Inventor
  • Olausson, Stefan
  • Sjölander, Håkan

Abstract

A depowdering apparatus for depowdering a cake comprising a build part includes a depowdering chamber, a blast nozzle, and a build elevator. The depowdering chamber includes a bottom surface and a build inlet extending through the bottom surface, where the build inlet includes an inlet axis that is substantially vertically oriented. The blast nozzle is positioned within the depowdering chamber and oriented to direct a fluid stream toward the inlet axis. The blast nozzle is laterally spaced from the inlet axis and operable to revolve about the inlet axis on a travel path encircling the inlet axis. The build elevator is arranged below the build inlet in a vertical direction and is operable to raise the cake comprising the build part through the build inlet and into the depowdering chamber along the inlet axis as the blast nozzle is revolved about the inlet axis on the travel path.

IPC Classes  ?

  • B29C 64/35 - Cleaning
  • B29C 64/357 - Recycling
  • B29C 64/232 - Driving means for motion along the axis orthogonal to the plane of a layer
  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing

26.

Devices, systems, and methods for monitoring a powder layer in additive manufacturing processes

      
Application Number 16523484
Grant Number 11541457
Status In Force
Filing Date 2019-07-26
First Publication Date 2021-01-28
Grant Date 2023-01-03
Owner Arcam AB (Sweden)
Inventor
  • Löfving, Björn
  • Karlsson, Kristofer

Abstract

Devices, systems, and methods for monitoring a powder layer in additive manufacturing are disclosed. A method of monitoring a powder layer includes receiving image data corresponding the powder layer supported by a powder bed within a build chamber from imaging devices, determining leading and trailing regions of interest located adjacent to a leading end and a trailing end of the moving powder distributor, respectively, the leading and trailing regions of interest moving according to movement of the moving powder distributor, selecting at least one point located in the leading region of interest from the image data, determining first characteristics of the point, when the point is located within the trailing region of interest, determining second characteristics of the point, and comparing the first characteristics to the second characteristics.

IPC Classes  ?

  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 10/10 - Formation of a green body

27.

Devices, systems, and methods for monitoring a powder layer in additive manufacturing processes

      
Application Number 16523492
Grant Number 11338519
Status In Force
Filing Date 2019-07-26
First Publication Date 2021-01-28
Grant Date 2022-05-24
Owner ARCAM AB (Sweden)
Inventor
  • Löfving, Björn
  • Karlsson, Kristofer

Abstract

Devices, systems, and methods for monitoring a powder layer in additive manufacturing are disclosed. A method includes receiving leading and trailing image data from an image signal processor that is optically coupled to a plurality of leading and trailing optical fibers arranged on a moving powder distributor, the leading and trailing image data corresponding to images of the powder layer, selecting at least one point on the powder bed that is located within a leading region of interest, determining first characteristics of the point, when the point is located within a trailing region of interest due to movement of the moving powder distributor, determining second characteristics of the point, and comparing the first characteristics to the second characteristics to monitor the powder layer distributed by the moving powder distributor.

IPC Classes  ?

  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/245 - Platforms or substrates
  • B29C 64/255 - Enclosures for the building material, e.g. powder containers
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]
  • B29C 64/205 - Means for applying layers
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B22F 12/30 - Platforms or substrates
  • B22F 12/50 - Means for feeding of material, e.g. heads
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/80 - Data acquisition or data processing
  • B22F 10/37 - Process control of powder bed aspects, e.g. density
  • B22F 12/90 - Means for process control, e.g. cameras or sensors

28.

X-ray calibration standard object

      
Application Number 17018439
Grant Number 11806800
Status In Force
Filing Date 2020-09-11
First Publication Date 2020-12-31
Grant Date 2023-11-07
Owner Arcam AB (Sweden)
Inventor
  • Backlund, Johan
  • Wildheim, Martin

Abstract

A standard reference plate is configured for insertion into an additive manufacturing apparatus for calibrating an electron beam of the additive manufacturing apparatus. The standard reference plate includes a lower plate and an upper plate being essentially in parallel and attached spaced apart from each other, the upper plate including a plurality of holes. A predetermined hollow pattern is provided inside the holes, and a spacing between the holes and the size of the holes and a distance between the upper plate and the lower plate and a position of an x-ray sensor of the additive manufacturing apparatus with respect to the standard reference plate are arranged so that x-rays emanating from the lower plate, when the electron beam is passing through a hollow part of the hollow pattern, will not pass directly from the lower plate through any one of the holes to the x-ray sensor.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • G01T 1/29 - Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 50/00 - Data acquisition or data processing for additive manufacturing
  • H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B22F 10/31 - Calibration of process steps or apparatus settings, e.g. before or during manufacturing
  • B22F 12/52 - Hoppers
  • B22F 12/55 - Two or more means for feeding material
  • B22F 10/32 - Process control of the atmosphere, e.g. composition or pressure in a building chamber
  • B22F 10/36 - Process control of energy beam parameters
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • H01J 37/30 - Electron-beam or ion-beam tubes for localised treatment of objects

29.

METHOD FOR ADDITIVE MANUFACTURING

      
Application Number 17010143
Status Pending
Filing Date 2020-09-02
First Publication Date 2020-12-24
Owner Arcam AB (Sweden)
Inventor Hellestam, Calle

Abstract

A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed, comprising the steps of: providing at least one model of said three-dimensional article, moving a support structure in z-direction at a predetermined speed while rotating said support structure at a predetermined speed, directing a first and second energy beam causing said powder layer to fuse in first and second selected locations according to said model, wherein a first cover area of said first energy beam on said powder layer is arranged at a predetermined minimum distance and non-overlapping from a second cover area of said second energy beam on said powder layer, a trajectory of said first cover area and a trajectory of said second cover area are at least one of overlapping each other, abutting each other or separated to each other when said support structure is rotated a full lap.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 15/00 - Electron-beam welding or cutting
  • B28B 1/00 - Producing shaped articles from the material
  • B23K 15/02 - Control circuits therefor
  • B23K 26/342 - Build-up welding
  • B23K 26/144 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/245 - Platforms or substrates
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]

30.

Electron beam melting additive manufacturing machine with dynamic energy adjustment

      
Application Number 16385417
Grant Number 11491575
Status In Force
Filing Date 2019-04-16
First Publication Date 2020-10-22
Grant Date 2022-11-08
Owner
  • ARCAM AB (Sweden)
  • AP&C ADVANCED POWERS & COATINGS INC. (Canada)
Inventor
  • Larouche, Frederic
  • Elfström, Isak

Abstract

An electron beam melting machine and a method of operation are provided which maintains constant energy absorption within a build layer by adjusting an incident energy level to compensate for energy not absorbed by the additive powder. This unabsorbed energy is detected in the form of electron emissions, which include secondary electrons, backscattered electrons, and/or electrons which are transmitted through the build platform.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

31.

Additive manufacturing of three-dimensional articles

      
Application Number 16797159
Grant Number 11623282
Status In Force
Filing Date 2020-02-21
First Publication Date 2020-09-10
Grant Date 2023-04-11
Owner Arcam AB (Sweden)
Inventor
  • Nordkvist, Johan
  • Ackelid, Ulf

Abstract

The present invention relates to a methods, computer program products, program elements, and apparatuses for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article. The method comprising the steps of providing at least one electron beam source emitting an electron beam for at least one of heating or fusing the powder material, where the electron beam source comprises a cathode and an anode, and varying an accelerator voltage between the cathode and the anode between at least a first and second predetermined value during the forming of the three-dimensional article.

IPC Classes  ?

  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B22F 3/10 - Sintering only
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor
  • B22F 10/10 - Formation of a green body
  • B22F 12/45 - Two or more
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam

32.

Additive manufacturing of three-dimensional articles

      
Application Number 16141685
Grant Number 10974448
Status In Force
Filing Date 2018-09-25
First Publication Date 2020-08-06
Grant Date 2021-04-13
Owner Arcam AB (Sweden)
Inventor
  • Ljungblad, Ulric
  • Ackelid, Ulf

Abstract

The present invention relates to a method for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the method comprising the step of heating a first portion of a support surface while depositing a layer of powder material on a second portion of the support surface.

IPC Classes  ?

  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B29K 105/00 - Condition, form or state of moulded material
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B28B 1/00 - Producing shaped articles from the material
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B01J 8/04 - Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
  • C01B 3/02 - Production of hydrogen or of gaseous mixtures containing hydrogen
  • C01B 3/38 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
  • C01B 3/48 - Production of hydrogen or of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents followed by reaction of water vapour with carbon monoxide
  • C01C 1/04 - Preparation of ammonia by synthesis

33.

Method for additive manufacturing

      
Application Number 16548094
Grant Number 11517964
Status In Force
Filing Date 2019-08-22
First Publication Date 2019-12-12
Grant Date 2022-12-06
Owner Arcam AB (Sweden)
Inventor Ljungblad, Ulric

Abstract

A method for forming a three-dimensional article through successive fusion of parts of a powder bed comprising: providing a model of the three dimensional article, applying a first powder layer on a work table, directing an energy beam over the work table causing the first powder layer to fuse in selected locations according to the model to form a first cross section of the three-dimensional article, applying a second powder layer on the work table, directing the energy beam over the work table causing the second powder layer to fuse in selected locations according to the model to form a second cross section of the three-dimensional article, wherein the second layer is bonded to the first layer, detecting a local thickness in at least two positions in at least the second powder layer, varying an energy beam parameter depending on the detected local thickness of the second powder layer.

IPC Classes  ?

  • B22F 10/20 - Direct sintering or melting
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 10/30 - Process control

34.

Method and device for distributing powder material

      
Application Number 16266729
Grant Number 11400519
Status In Force
Filing Date 2019-02-04
First Publication Date 2019-10-03
Grant Date 2022-08-02
Owner Arcam AB (Sweden)
Inventor Karlsson, Kristofer

Abstract

Described is an additive manufacturing apparatus for additive manufacturing of three dimensional objects, said apparatus comprises a powder distribution unit movable across a build area for applying a layer of powder material thereon and a solidification device for selectively solidifying the applied powder layer at positions corresponding to a cross section of the object to be manufactured. Said powder distribution unit comprises at least a first and a second powder distributors essentially in parallel with each other and extending in a first direction, said first and second powder distributors are arranged to be adjustably spaced apart in a second direction transversely to said first direction which second direction is essentially in parallel with the direction of movement of said powder distribution unit over said build area.

IPC Classes  ?

  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 10/10 - Formation of a green body
  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B22F 1/052 - Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

35.

Compact build tank for an additive manufacturing apparatus

      
Application Number 16266576
Grant Number 10800101
Status In Force
Filing Date 2019-02-04
First Publication Date 2019-08-29
Grant Date 2020-10-13
Owner Arcam AB (Sweden)
Inventor Karlsson, Kristofer

Abstract

Described is a build chamber that comprises a telescopic build tank operatively connected at opposing ends to a powder table and a build table, the telescopic build tank comprising at least two segments telescopically coupled relative to one another, each of the at least two segments comprising a set of engagement grooves located on an interior surface of the at least two segments and a set of engagement pins located on an exterior surface of the at least two segments. The set of engagement pins is configured to engage with and travel along a corresponding set of engagement grooves of another of the at least two segments, and each engagement groove comprises a first axially extending channel positioned along a single axis and having at least one closed end, the at least one closed end being configured to impede separation of the at least two segments relative to one another.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
  • B29C 64/25 - Housings, e.g. machine housings
  • B29C 64/245 - Platforms or substrates
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B22F 3/10 - Sintering only
  • F16B 7/10 - Telescoping systems
  • B29C 64/232 - Driving means for motion along the axis orthogonal to the plane of a layer
  • F16B 7/20 - Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using bayonet connections

36.

Build tank for an additive manufacturing apparatus

      
Application Number 16266671
Grant Number 11267051
Status In Force
Filing Date 2019-02-04
First Publication Date 2019-08-29
Grant Date 2022-03-08
Owner Arcam AB (Sweden)
Inventor Karlsson, Kristofer

Abstract

Described is a build chamber for an additive manufacturing apparatus for forming a three-dimensional article layer by layer from a powder. The build chamber comprises a build chamber base body and said build chamber base body is formed by at least two segments telescopically coupled together.

IPC Classes  ?

  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B22F 3/10 - Sintering only
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 10/10 - Formation of a green body

37.

Compact build tank for an additive manufacturing apparatus

      
Application Number 16266828
Grant Number 11458682
Status In Force
Filing Date 2019-02-04
First Publication Date 2019-08-29
Grant Date 2022-10-04
Owner ARCAM AB (Sweden)
Inventor Karlsson, Kristofer

Abstract

The invention relates to a build chamber (1) for an additive manufacturing apparatus (100) for forming a three-dimensional article layer by layer from a powder. The build chamber (1) comprising a build chamber base body (2) and the build chamber base body (2) is formed by at least two segments (4) telescopically coupled together. Associated with the telescopically coupled segments are one or more bellows assemblies, further coupled to support structure configured to raise and/or lower the build table. An associated method is also provided.

IPC Classes  ?

  • B29C 64/25 - Housings, e.g. machine housings
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B29C 64/245 - Platforms or substrates
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B22F 3/10 - Sintering only
  • F16B 7/10 - Telescoping systems
  • B29C 64/232 - Driving means for motion along the axis orthogonal to the plane of a layer
  • F16B 7/20 - Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using bayonet connections
  • B22F 10/10 - Formation of a green body

38.

ELECTRON BEAM SOURCE AND THE USE OF THE SAME

      
Application Number 16195995
Status Pending
Filing Date 2018-11-20
First Publication Date 2019-06-27
Owner Arcam AB (Sweden)
Inventor Fager, Mattias

Abstract

Provided is an electron beam source for generating an electron beam comprising a cathode, an anode and a grid for regulating an electron beam current. The cathode has a base and a protrusion with sidewalls and a top surface. The base surface and the top surface are essentially flat. The base surface and the top surface are arranged at a predetermined distance from each other. The base is larger than the protrusion. The electron beam source further comprising a control unit adapted for changing an applied voltage to the grid for switching a spot size of the electron beam on a target surface between at least a first a first spot size corresponding to emission from the top surface of the cathode only and to a second spot size corresponding to emission from the top surface and the base surface of the cathode.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • H01J 37/302 - Controlling tubes by external information, e.g. programme control
  • H01J 37/317 - Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. ion implantation
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

39.

Enhanced electron beam generation

      
Application Number 16195970
Grant Number 11517975
Status In Force
Filing Date 2018-11-20
First Publication Date 2019-06-27
Grant Date 2022-12-06
Owner Arcam AB (Sweden)
Inventor
  • Fager, Mattias
  • Backlund, Johan

Abstract

An electron beam source including a cathode, an anode, a means for deflecting an electron beam over a target surface and at least one vacuum pump, the electron beam source further including a contraction area arranged between the anode and the means for deflecting the electron beam where a hole in the contraction area is aligned with a hole in the anode with respect to the cathode, a first vacuum pump is arranged between the contraction area and the anode and a second vacuum pump is arranged above the anode, a gas inlet is provided between the contraction area and the means for deflecting the electron beam, wherein a first crossover of the electron beam is arranged between the cathode and the anode and a second crossover is arranged at or in close proximity to the contraction area.

IPC Classes  ?

  • H01J 37/147 - Arrangements for directing or deflecting the discharge along a desired path
  • H01J 37/10 - Lenses
  • H01J 37/063 - Geometrical arrangement of electrodes for beam-forming
  • B23K 15/00 - Electron-beam welding or cutting
  • H01J 37/18 - Vacuum locks
  • H01J 37/09 - Diaphragms; Shields associated with electron- or ion-optical arrangements; Compensation of disturbing fields
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]
  • H01J 37/304 - Controlling tubes by information coming from the objects, e.g. correction signals
  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • H01J 37/301 - Arrangements enabling beams to pass between regions of different pressure
  • B22F 10/20 - Direct sintering or melting
  • B22F 10/30 - Process control

40.

Method for analysing a build layer

      
Application Number 16154444
Grant Number 10821721
Status In Force
Filing Date 2018-10-08
First Publication Date 2019-05-30
Grant Date 2020-11-03
Owner Arcam AB (Sweden)
Inventor Ekberg, Christian

Abstract

Described is a method for analyzing a build layer (1; 11) in an additive manufacturing machine when forming a three-dimensional article layer by layer by successive fusion of selected areas of powder layers, which selected areas correspond to successive layers of the three-dimensional article. The method comprises the steps of radiating a portion (4; 14) of the build layer (1; 11) by an energy beam and detecting particles emitted, backscattered or reflected from the radiated portion of the build layer, and scanning the portion (4; 14) of the build layer by moving the energy beam along a main path (5; 15) and simultaneously moving the energy beam back-and-forth across the main path in a meandering pattern (6; 16).

IPC Classes  ?

  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • G06F 30/00 - Computer-aided design [CAD]
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

41.

Platform device

      
Application Number 16154415
Grant Number 11072117
Status In Force
Filing Date 2018-10-08
First Publication Date 2019-05-30
Grant Date 2021-07-27
Owner Arcam AB (Sweden)
Inventor Hellestam, Calle

Abstract

The invention relates to a platform device (4) for forming a three-dimensional article (2) in an additive manufacturing machine layer by layer by successive fusion of selected areas of powder layers (3), which selected areas correspond to successive layers of the three-dimensional article. The platform device (4) has a support member (5) with a surface (6) for receiving powder. The support member (5) is rotatable about a first rotation axis (13) extending in a direction (15) substantially perpendicular to the surface (6). The support member (5) and the first rotation axis (13) are rotatable about a second rotation axis (14) arranged substantially in parallel with and off-set to the first rotation axis (13).

IPC Classes  ?

  • B29C 64/232 - Driving means for motion along the axis orthogonal to the plane of a layer
  • B29C 64/241 - Driving means for rotary motion
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B29C 64/245 - Platforms or substrates
  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/236 - Driving means for motion in a direction within the plane of a layer
  • B22F 10/10 - Formation of a green body
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

42.

Method and apparatus for detecting electron beam source filament wear

      
Application Number 16154374
Grant Number 10529070
Status In Force
Filing Date 2018-10-08
First Publication Date 2019-05-16
Grant Date 2020-01-07
Owner Arcam AB (Sweden)
Inventor
  • Hellestam, Calle
  • Fager, Mattias

Abstract

A method for detecting electron beam filament wear in an electron beam source, the method comprising the steps of: enlarging a beam spot emanating from the electron beam source on a work table to a predetermined minimum size, capturing an image of the beam spot on the work table by a camera, comparing the captured image of the beam spot with a reference image, and detecting filament wear if the captured image is deviating more than a predetermined value from the reference image.

IPC Classes  ?

  • G06T 7/00 - Image analysis
  • H01J 37/22 - Optical or photographic arrangements associated with the tube
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

43.

Method and apparatus for additive manufacturing

      
Application Number 16103634
Grant Number 11185926
Status In Force
Filing Date 2018-08-14
First Publication Date 2019-04-04
Grant Date 2021-11-30
Owner Arcam AB (Sweden)
Inventor Hellestam, Calle

Abstract

A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed on a support structure, the method comprising the steps of: providing at least one model of the three-dimensional article, lowering the support structure a predetermined distance and rotating the support structure a predetermined angle in a first direction before applying a first powder layer covering the lowered and rotated support structure, rotating the support structure the predetermined angle in a second direction opposite to the first direction before directing the at least one first energy beam from the at least one first energy beam source at selected locations of the first powder layer, the at least one first energy beam source causing the first powder layer on the stationary support structure which is stationary to fuse in the selected locations according to the model to form first portions of the three-dimensional article.

IPC Classes  ?

  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B29C 64/245 - Platforms or substrates
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/241 - Driving means for rotary motion
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 3/10 - Sintering only
  • B22F 10/10 - Formation of a green body

44.

Method and apparatus for manufacturing porous three-dimensional articles

      
Application Number 16166805
Grant Number 11141790
Status In Force
Filing Date 2018-10-22
First Publication Date 2019-02-28
Grant Date 2021-10-12
Owner Arcam AB (Sweden)
Inventor
  • Hellestam, Calle
  • Olsson, Jenny
  • Elfstroem, Isak

Abstract

Disclosed is a method for manufacturing three-dimensional articles with porosity. A model is created of a porous structure, said creating step comprising the steps of: defining a three-dimensional space comprising a predetermined pattern of nodes, wherein said nodes are connected together in a predetermined manner with struts, moving each node in said three-dimensional space a randomized distance, which distance is less than a predetermined value and in a randomized direction, slicing said three-dimensional space into a predetermined number of two-dimensional layers with a predetermined thickness, slicing said three-dimensional article into two-dimensional layers with a predetermined thickness, applying one two-dimensional layer of said article on one two-dimensional layer of said porous structure resulting in a porous two-dimensional layer of said article, repeating said applying step for all two dimensional layers of said article, manufacturing the three-dimensional article with porosity according to the model by exposing fusible material to an energy source.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 10/10 - Formation of a green body
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 3/11 - Making porous workpieces or articles
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B22F 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
  • B29K 105/04 - Condition, form or state of moulded material cellular or porous

45.

Method and apparatus for detecting defects in freeform fabrication

      
Application Number 16158069
Grant Number 11161177
Status In Force
Filing Date 2018-10-11
First Publication Date 2019-02-07
Grant Date 2021-11-02
Owner Arcam AB (Sweden)
Inventor Ljungblad, Ulric

Abstract

A method for detecting defects in three-dimensional articles. Providing a model of said article. Providing a first powder layer on a substrate, directing an energy beam over said substrate causing said first powder layer to fuse in selected locations forming a first cross section of said three-dimensional article, providing a second powder layer on said substrate, directing the energy beam over said substrate causing said second powder layer to fuse in selected locations to form a second cross section of said three-dimensional article. A first and second image of a first and second fusion zone of said first powder layer respectively is captured. Comparing said first and second images with corresponding layers in said model. Detecting a defect in the three-dimensional article if a deviation in said first image with respect to said model is at least partially overlapping a deviation in said second image with respect to said model.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • G01N 21/95 - Investigating the presence of flaws, defects or contamination characterised by the material or shape of the object to be examined
  • B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
  • C22C 38/00 - Ferrous alloys, e.g. steel alloys
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 3/15 - Hot isostatic pressing
  • C22C 14/00 - Alloys based on titanium
  • C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
  • C22C 21/00 - Alloys based on aluminium
  • B22F 10/10 - Formation of a green body

46.

Apparatus for fusing a workpiece

      
Application Number 16052365
Grant Number 11084098
Status In Force
Filing Date 2018-08-01
First Publication Date 2018-12-27
Grant Date 2021-08-10
Owner Arcam AB (Sweden)
Inventor
  • Backlund, Johan
  • Lock, Tomas

Abstract

Various embodiments of the present invention relate to a method for welding a workpiece comprising the steps of: making a first weld at a first position on said workpiece with a high energy beam, deflecting the high energy beam with at least one deflection lens for making a second weld at a second position on said workpiece, focusing the high energy beam on said workpiece with at least one focusing lens, shaping the high energy beam on said workpiece with at least one astigmatism lens so that the shape of the high energy beam on said workpiece is longer in a direction parallel to a deflection direction of said high energy beam than in a direction perpendicular to said deflection direction of said high energy beam. The invention is also related to the use of an astigmatism lens and to a method for forming a three dimensional article.

IPC Classes  ?

  • B22F 10/20 - Direct sintering or melting
  • B23K 26/064 - Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/073 - Shaping the laser spot
  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B23K 15/00 - Electron-beam welding or cutting
  • B28B 1/00 - Producing shaped articles from the material
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B23K 26/342 - Build-up welding
  • B23K 26/70 - Auxiliary operations or equipment
  • B23K 15/02 - Control circuits therefor
  • B22F 10/30 - Process control
  • B29K 105/00 - Condition, form or state of moulded material

47.

Method and device for producing three-dimensional objects

      
Application Number 15967155
Grant Number 11292062
Status In Force
Filing Date 2018-04-30
First Publication Date 2018-12-06
Grant Date 2022-04-05
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

A method for producing three-dimensional objects layer by layer using a powdery material which can be solidified by irradiating it with at least two electron beams, said method comprises a pre-heating step, wherein the pre-heating step comprises the sub-step of scanning a pre-heating powder layer area (100) by scanning a first electron beam in a first region (I) and by scanning a second electron beam in a second region (II) distributed over the pre-heating powder layer area (100), wherein consecutively scanned paths are separated by, at least, a security distance (ΔY), said sub-step further comprising the step of synchronising the preheating of said first and second electron beams when simultaneously preheating said powder material within said first and second regions respectively, so that said first and second electron beams are always separated to each other with at least a minimum security distance (ΔX).

IPC Classes  ?

  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B23K 15/00 - Electron-beam welding or cutting
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]
  • B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
  • B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
  • B22F 3/10 - Sintering only
  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • C22C 1/04 - Making non-ferrous alloys by powder metallurgy
  • B22F 10/10 - Formation of a green body

48.

Apparatus, method, and computer program product for fusing a workpiece

      
Application Number 16040841
Grant Number 10821517
Status In Force
Filing Date 2018-07-20
First Publication Date 2018-12-06
Grant Date 2020-11-03
Owner Arcam AB (Sweden)
Inventor
  • Backlund, Johan
  • Lock, Tomas

Abstract

Provided is an apparatus that includes a high energy beam configured to make a first weld at a first position on a workpiece; at least one deflection lens configured to deflect the high energy beam so as to cause the high energy beam to make a second weld at a second position; at least one focusing lens configured to focus the high energy beam; at least one astigmatism lens; and at least one controller. The controller is configured to shape the high energy beam so that the shape of the high energy beam on the workpiece is longer in a direction parallel to a deflection direction of the high energy beam than in a direction perpendicular to the deflection direction of the high energy beam. A length ratio is varying as a function of the power of the energy beam, while the width in the perpendicular direction is constant.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 26/342 - Build-up welding
  • B23K 26/34 - Laser welding for purposes other than joining
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/073 - Shaping the laser spot
  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B28B 1/00 - Producing shaped articles from the material
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B23K 26/70 - Auxiliary operations or equipment
  • B23K 15/02 - Control circuits therefor
  • B29K 105/00 - Condition, form or state of moulded material

49.

Additive manufacturing of three-dimensional articles

      
Application Number 15938646
Grant Number 11059123
Status In Force
Filing Date 2018-03-28
First Publication Date 2018-11-01
Grant Date 2021-07-13
Owner Arcam AB (Sweden)
Inventor
  • Ackelid, Ulf
  • Elfstroem, Isak

Abstract

The present invention relates to an apparatus for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the apparatus comprising an electron beam source emanating an electron beam for fusing the powder material in a build tank, a hollow construction having an upper opening and a lower opening, means for moving the hollow construction between a first position and a second position, a synchronising unit for synchronising the movement of a powder distributor for applying the individual layers of powder material on the work table with the movement of the hollow construction so that the hollow metal construction is at the first position when fusing and/or heating the powder layer and at the second position when the powder distributor is distributing the powder material for forming the individual powder layers.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B23K 15/02 - Control circuits therefor
  • B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/264 - Arrangements for irradiation
  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B22F 10/10 - Formation of a green body

50.

Computer program products configured for additive manufacturing of three-dimensional articles

      
Application Number 15951979
Grant Number 10071424
Status In Force
Filing Date 2018-04-12
First Publication Date 2018-08-16
Grant Date 2018-09-11
Owner Arcam AB (Sweden)
Inventor Fager, Mattias

Abstract

A computer program product is configured for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts correspond to successive cross sections of the three-dimensional article, by: providing a model of the at least one three-dimensional article; applying a first powder layer on a work table; directing a first energy beam from a first energy beam source over the work table causing the first powder layer to fuse in first selected locations according to corresponding models to form a first cross section of the three-dimensional article, where the first energy beam is fusing at least a first region of a first cross section with parallel scan lines in a first direction; varying a distance between two adjacent scan lines, which are used for fusing the powder layer, as a function of a mean length of the two adjacent scan lines.

IPC Classes  ?

  • B33Y 80/00 - Products made by additive manufacturing
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B28B 1/00 - Producing shaped articles from the material
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29K 105/00 - Condition, form or state of moulded material
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

51.

Apparatus, method, and computer program product for fusing a workpiece

      
Application Number 15921381
Grant Number 10071423
Status In Force
Filing Date 2018-03-14
First Publication Date 2018-07-19
Grant Date 2018-09-11
Owner Arcam AB (Sweden)
Inventor
  • Backlund, Johan
  • Lock, Tomas

Abstract

Various embodiments of the present invention relate to a method for welding a workpiece comprising the steps of: making a first weld at a first position on said workpiece with a high energy beam, deflecting the high energy beam with at least one deflection lens for making a second weld at a second position on said workpiece, focusing the high energy beam on said workpiece with at least one focusing lens, shaping the high energy beam on said workpiece with at least one astigmatism lens so that the shape of the high energy beam on said workpiece is longer in a direction parallel to a deflection direction of said high energy beam than in a direction perpendicular to said deflection direction of said high energy beam. The invention is also related to the use of an astigmatism lens and to a method for forming a three dimensional article.

IPC Classes  ?

  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B23K 15/00 - Electron-beam welding or cutting
  • B28B 1/00 - Producing shaped articles from the material
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/073 - Shaping the laser spot
  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
  • B23K 26/342 - Build-up welding
  • B23K 26/70 - Auxiliary operations or equipment
  • B23K 15/02 - Control circuits therefor
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B29K 105/00 - Condition, form or state of moulded material

52.

Apparatus, method, and computer program product for fusing a workpiece

      
Application Number 15921401
Grant Number 10058921
Status In Force
Filing Date 2018-03-14
First Publication Date 2018-07-19
Grant Date 2018-08-28
Owner Arcam AB (Sweden)
Inventor
  • Backlund, Johan
  • Lock, Tomas

Abstract

Various embodiments of the present invention relate to a method for welding a workpiece comprising the steps of: making a first weld at a first position on said workpiece with a high energy beam, deflecting the high energy beam with at least one deflection lens for making a second weld at a second position on said workpiece, focusing the high energy beam on said workpiece with at least one focusing lens, shaping the high energy beam on said workpiece with at least one astigmatism lens so that the shape of the high energy beam on said workpiece is longer in a direction parallel to a deflection direction of said high energy beam than in a direction perpendicular to said deflection direction of said high energy beam. The invention is also related to the use of an astigmatism lens and to a method for forming a three dimensional article.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/70 - Auxiliary operations or equipment
  • B23K 26/342 - Build-up welding

53.

Additive manufacturing of three-dimensional articles

      
Application Number 15790348
Grant Number 10987752
Status In Force
Filing Date 2017-10-23
First Publication Date 2018-06-21
Grant Date 2021-04-27
Owner Arcam AB (Sweden)
Inventor Ekberg, Christian

Abstract

A method is provided for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article. The method includes: providing at least one electron beam source emitting an electron beam; providing a leakage current detector for sensing a current through the anode and/or the Wehnelt cup; providing a low impedance voltage source connectable to the Wehnelt cup via a switch, where the voltage source is having a more negative potential than a negative potential applied to the cathode; and protecting the cathode against vacuum arc discharge energy currents when forming the three-dimensional article by providing the Wehnelt cup to the low impedance negative voltage by closing the switch when the leakage current detector is sensing a current through the anode and/or the Wehnelt cup which is higher than a predetermined value.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor
  • B28B 1/00 - Producing shaped articles from the material
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • H01J 37/302 - Controlling tubes by external information, e.g. programme control
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
  • B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/264 - Arrangements for irradiation
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • H01J 3/02 - Electron guns
  • H01J 37/06 - Electron sources; Electron guns
  • H01J 37/065 - Construction of guns or parts thereof
  • H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
  • H01J 37/315 - Electron-beam or ion-beam tubes for localised treatment of objects for welding

54.

Additive manufacturing of three-dimensional articles

      
Application Number 15885205
Grant Number 10099289
Status In Force
Filing Date 2018-01-31
First Publication Date 2018-06-07
Grant Date 2018-10-16
Owner Arcam AB (Sweden)
Inventor Jonasson, Daniel

Abstract

Provided is a method for forming a three dimensional article comprising the steps of: providing at least one electron beam source emitting an electron beam for at least one of heating or fusing said powder material, where said electron beam source comprises a cathode, an anode, and a grid between said cathode and anode; controlling the electron beam source in at least two modes during said formation of said three dimensional article; applying a predetermined accelerator voltage between said cathode and said anode; applying a predetermined number of different grid voltages between said grid and said cathode for producing a corresponding predetermined number of electron beam currents; and at least one of creating or updating a look-up table or mathematical function during one of the at least two modes, wherein said look-up table or mathematical function defines a relationship between a desired electron beam current and an applied grid voltage.

IPC Classes  ?

  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B28B 1/00 - Producing shaped articles from the material
  • B23K 15/00 - Electron-beam welding or cutting
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B29K 105/00 - Condition, form or state of moulded material

55.

ADDITIVE MANUFACTURING OF THREE-DIMENSIONAL ARTICLES

      
Application Number 15788976
Status Pending
Filing Date 2017-10-20
First Publication Date 2018-05-31
Owner ARCAM AB (Sweden)
Inventor Ackelid, Ulf

Abstract

Provided is a method for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article in a vacuum chamber, said method comprising the steps of: providing at least one electron beam source emitting an electron beam for at least one of heating or fusing said powder material in said vacuum chamber, applying a first set of beam parameters for formation of a fused bulk material of said three-dimensional article, where said bulk material has a predetermined microstructure, applying a second set of beam parameters for formation of a top portion of said three-dimensional article, wherein said second set of beam parameters is applied a predetermined number of layers prior to reaching a top surface of said three-dimensional article for encapsulating chimney porosities into said bulk material. Associated apparatus and computer program product are also provided.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 3/15 - Hot isostatic pressing
  • B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
  • B23K 15/02 - Control circuits therefor

56.

Method and apparatus for additive manufacturing

      
Application Number 15702445
Grant Number 10792757
Status In Force
Filing Date 2017-09-12
First Publication Date 2018-04-26
Grant Date 2020-10-06
Owner Arcam AB (Sweden)
Inventor Ackelid, Ulf

Abstract

A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed, the method comprising the steps of: providing a model of the at least one three dimensional article; applying a first powder layer on at least one build platform; directing an electron beam from an inclined electron beam source over the at least one build platform where a central electron beam emanating from the source is building an angle α with respect to a normal to the build platform≠0°, the directing of the first energy beam causing the first powder layer to fuse in a first selected locations according to the model; rotating or tilting the electron beam source a predetermined angle, directing the electron beam from the tilted or rotated electron beam source causing a first powder layer to fuse in a second selected locations according to the model.

IPC Classes  ?

  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B23K 15/00 - Electron-beam welding or cutting
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

57.

Additive manufacturing of three-dimensional articles

      
Application Number 15495323
Grant Number 10525547
Status In Force
Filing Date 2017-04-24
First Publication Date 2017-12-07
Grant Date 2020-01-07
Owner Arcam AB (Sweden)
Inventor Ekberg, Christian

Abstract

A method is provided for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the method comprising the steps of: providing at least one electron beam source emitting an electron beam for at least one of heating or fusing the powder material, where the electron beam source comprises a cathode, an anode, and a Wehnelt cup between the cathode and anode; providing a guard ring between the Wehnelt cup and the anode and in close proximity to the Wehnelt cup, where the guard ring is having an aperture which is larger than an aperture of the Wehnelt cup; protecting the cathode and/or the Wehnelt cup against vacuum arc discharge energy currents when forming the three-dimensional article by providing the guard ring with a higher negative potential than the Wehnelt cup and cathode.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/06 - Electron-beam welding or cutting within a vacuum chamber
  • B23K 15/02 - Control circuits therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

58.

Method for additive manufacturing

      
Application Number 15495250
Grant Number 11325191
Status In Force
Filing Date 2017-04-24
First Publication Date 2017-11-30
Grant Date 2022-05-10
Owner Arcam AB (Sweden)
Inventor Ackelid, Ulf

Abstract

A method for forming a three-dimensional article through successive fusion of parts of a metal powder bed is provided, comprising the steps of: distributing a first metal powder layer on a work table inside a build chamber, directing at least one high energy beam from at least one high energy beam source over the work table causing the first metal powder layer to fuse in selected locations, distributing a second metal powder layer on the work table, directing at least one high energy beam over the work table causing the second metal powder layer to fuse in selected locations, introducing a first supplementary gas into the build chamber, which first supplementary gas comprising hydrogen, is capable of reacting chemically with or being absorbed by a finished three-dimensional article, and releasing a predefined concentration of the gas which had reacted chemically with or being absorbed by the finished three dimensional article.

IPC Classes  ?

  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B23K 15/10 - Non-vacuum electron beam-welding or cutting
  • B23K 26/12 - Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
  • B33Y 70/00 - Materials specially adapted for additive manufacturing
  • B23K 26/342 - Build-up welding
  • B23K 26/70 - Auxiliary operations or equipment
  • B22F 3/10 - Sintering only
  • B22F 3/15 - Hot isostatic pressing
  • B22F 3/24 - After-treatment of workpieces or articles
  • B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
  • C22C 14/00 - Alloys based on titanium
  • C23C 8/08 - Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
  • B23K 103/14 - Titanium or alloys thereof
  • C22C 1/04 - Making non-ferrous alloys by powder metallurgy
  • B23K 103/08 - Non-ferrous metals or alloys
  • B23K 103/04 - Steel alloys
  • B22F 10/10 - Formation of a green body

59.

Method for additive manufacturing

      
Application Number 15495225
Grant Number 10549348
Status In Force
Filing Date 2017-04-24
First Publication Date 2017-11-30
Grant Date 2020-02-04
Owner Arcam AB (Sweden)
Inventor Ackelid, Ulf

Abstract

A method comprising the steps of: distributing a titanium alloy or pure titanium powder layer on a work table inside a vacuum chamber, directing at least one electron beam from at least one electron beam source over the work table causing the powder layer to fuse in selected locations, distributing a second powder layer on the work table of a titanium alloy or pure titanium inside the build chamber, directing the at least one electron beam over the work table causing the second powder layer to fuse in selected locations, and releasing a predefined concentration of the gas from the metal powder into the vacuum chamber when at least one of heating or fusing the metal powder layer, wherein at least one gas comprising hydrogen is absorbed into or chemically bonded to the titanium or titanium alloy powder to a concentration of 0.01-0.5% by weight of the hydrogen.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 15/00 - Electron-beam welding or cutting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 70/00 - Materials specially adapted for additive manufacturing
  • B23K 26/342 - Build-up welding
  • B22F 3/10 - Sintering only
  • B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
  • B23K 26/12 - Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
  • C22C 14/00 - Alloys based on titanium
  • C23C 8/08 - Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
  • B23K 103/14 - Titanium or alloys thereof
  • B23K 15/02 - Control circuits therefor
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B23K 26/70 - Auxiliary operations or equipment
  • B22F 3/15 - Hot isostatic pressing
  • B22F 3/24 - After-treatment of workpieces or articles

60.

Method and device for characterizing an electron beam

      
Application Number 15630199
Grant Number 10586683
Status In Force
Filing Date 2017-06-22
First Publication Date 2017-10-12
Grant Date 2020-03-10
Owner Arcam AB (Sweden)
Inventor Lock, Tomas

Abstract

A device for detecting X-rays radiated out of a substrate surface, said device comprising at least one X-ray detector, a resolver grating and a modulator grating, said resolver grating with at least one opening facing towards said X-ray detector is arranged in front of said X-ray detector. Said modulator grating is provided between said resolver grating and said substrate at a predetermined distance from said resolver grating and said substrate, where said modulator grating having a plurality of openings in at least a first direction, wherein said x-rays from said surface is spatially modulated with said modulator grating and resolver grating.

IPC Classes  ?

  • H01J 37/304 - Controlling tubes by information coming from the objects, e.g. correction signals
  • H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
  • H01J 37/244 - Detectors; Associated components or circuits therefor
  • B23K 15/00 - Electron-beam welding or cutting
  • G01T 1/29 - Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • H01J 37/30 - Electron-beam or ion-beam tubes for localised treatment of objects
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 15/02 - Control circuits therefor
  • B28B 1/00 - Producing shaped articles from the material
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • H01J 37/317 - Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. ion implantation
  • H01J 37/09 - Diaphragms; Shields associated with electron- or ion-optical arrangements; Compensation of disturbing fields
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

61.

Additive manufacturing method and apparatus

      
Application Number 15630154
Grant Number 10406599
Status In Force
Filing Date 2017-06-22
First Publication Date 2017-10-05
Grant Date 2019-09-10
Owner Arcam AB (Sweden)
Inventor
  • Ljungblad, Ulric
  • Wildheim, Martin

Abstract

An apparatus for forming a three-dimensional article is provided, comprising means for providing a predetermined amount of powder, a powder distributor, means for directing an energy beam over a first powder layer causing it fuse in selected locations according to a model, a camera for capturing at least one image of a shape of at least one portion of the predetermined amount of powder that has yet to be initially distributed, the at least one image being captured prior to distribution of an entirety of all portions of the predetermined amount of powder over the surface, and means for comparing at least one value of at least one parameter in the image detected with a corresponding reference parameter value, wherein the at least one parameter is associated with the shape of the powder that has yet to be initially distributed.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 7/02 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B33Y 10/00 - Processes of additive manufacturing

62.

Method and apparatus for forming a three-dimensional article

      
Application Number 15412425
Grant Number 11247274
Status In Force
Filing Date 2017-01-23
First Publication Date 2017-09-14
Grant Date 2022-02-15
Owner Arcam AB (Sweden)
Inventor Ackelid, Ulf

Abstract

An apparatus for forming at least one three-dimensional article through successive fusion of parts of a powder bed. The apparatus comprises a powder distributor configured for evenly distributing a layer of powder on top of a build table; an energy beam configured for fusing the powder layer in selected locations corresponding to the cross section of the three-dimensional article, the powder distributor comprises an elongated rod provided movable at a predetermined distance above the powder table and with its central axis in parallel with a top surface of the powder table, and a flexible foil attached onto the elongated rod and protruding from the rod towards the powder table; and an elongated device parallel with the powder distributor and arranged onto or over the powder table outside the build table, where the elongated device is arranged for mechanically touching the flexible foil.

IPC Classes  ?

  • B22F 12/67 - Blades
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B29C 64/343 - Metering
  • B29C 64/188 - Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
  • B29C 64/165 - Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
  • B22F 10/10 - Formation of a green body

63.

Apparatus for additive manufacturing

      
Application Number 15592714
Grant Number 10814392
Status In Force
Filing Date 2017-05-11
First Publication Date 2017-08-31
Grant Date 2020-10-27
Owner Arcam AB (Sweden)
Inventor Hellestam, Calle

Abstract

An apparatus comprising a control unit configured for applying a first powder layer on a work table; directing a first energy causing said first powder layer to fuse in first selected locations to form a first cross section where said first energy beam is fusing a first region with parallel scan lines in a first direction and a second region with parallel scan lines in a second direction; fusing at least one of the scan lines in said first region in said first direction immediately before fusing at least one of said scan lines in said second region in said second direction; applying a second powder layer and directing the energy beam causing said second powder layer to fuse in second selected locations where the energy beam is fusing said first region with parallel scan lines in a third direction and said second region in a fourth direction.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B28B 1/00 - Producing shaped articles from the material
  • B33Y 10/00 - Processes of additive manufacturing
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B29K 105/00 - Condition, form or state of moulded material

64.

Apparatus for additive manufacturing

      
Application Number 15592752
Grant Number 10814393
Status In Force
Filing Date 2017-05-11
First Publication Date 2017-08-31
Grant Date 2020-10-27
Owner Arcam AB (Sweden)
Inventor Hellestam, Calle

Abstract

An apparatus comprising a control unit configured for applying a first powder layer on a work table, directing a first energy beam from a first energy beam source over said work table causing said first powder layer to fuse in first selected locations according to a corresponding model to form a first cross section of said at least one three-dimensional article, where said first energy beam is fusing a first article with parallel scan lines in a first direction, fusing a second scan line in said first direction in said first layer in said first article within a predetermined time interval after fusing a first scan line in said first article, wherein at least one intermediate scan line is fused within said time interval at another predetermined position and where said first and second scan lines are adjacent to each other.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B28B 1/00 - Producing shaped articles from the material
  • B33Y 10/00 - Processes of additive manufacturing
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B29K 105/00 - Condition, form or state of moulded material

65.

Energy beam size verification

      
Application Number 15495318
Grant Number 09897513
Status In Force
Filing Date 2017-04-24
First Publication Date 2017-08-10
Grant Date 2018-02-20
Owner ARCAM AB (Sweden)
Inventor Snis, Anders

Abstract

A method for verifying a size of an energy beam spot, said method comprising the steps of providing a first beam spot having a predetermined size and power at a first position on a work piece, varying a focus and/or astigmatism lens setting for said first beam spot until max intensity for the beam spot is detected, comparing the detected settings of said focus lens and/or astigmatism lens for said maximum intensity of the beam spot with stored settings of said focus lens and/or astigmatism lens for the beam spot with said predetermined size and power, repeating step a-c for different predetermined beam powers, repeating step a-d for different positions on said work piece, wherein said beam spot size is verified if each detected settings of said focus lens and/or astigmatism lens are deviating less than a predetermined value from corresponding stored settings of said focus lens and/or astigmatism lens.

IPC Classes  ?

  • G01J 5/02 - Constructional details
  • G01M 11/02 - Testing optical properties
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/342 - Build-up welding
  • B23K 26/046 - Automatically focusing the laser beam
  • B23K 15/02 - Control circuits therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • H01J 37/244 - Detectors; Associated components or circuits therefor

66.

Energy beam position verification

      
Application Number 15495331
Grant Number 09915583
Status In Force
Filing Date 2017-04-24
First Publication Date 2017-08-10
Grant Date 2018-03-13
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

A method for verifying a position of an energy beam spot, said method comprising the steps of: providing a calibrated energy beam having a first focus in a at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said first focus, providing said calibrated energy beam having a second focus in said at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said second focus, comparing said at least two positions created with said first and second focus, wherein said position of the energy beam is verified if said positions created with said first focus are deviating less than a predetermined distance from said positions created with said second focus.

IPC Classes  ?

  • G01J 5/02 - Constructional details
  • G01M 11/02 - Testing optical properties
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/046 - Automatically focusing the laser beam
  • B23K 15/02 - Control circuits therefor
  • B23K 26/342 - Build-up welding
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • H01J 37/244 - Detectors; Associated components or circuits therefor

67.

Apparatus, method, and computer program product for fusing a workpiece

      
Application Number 15466212
Grant Number 09950367
Status In Force
Filing Date 2017-03-22
First Publication Date 2017-07-06
Grant Date 2018-04-24
Owner ARCAM AB (Sweden)
Inventor
  • Backlund, Johan
  • Lock, Tomas

Abstract

Various embodiments of the present invention relate to a method for welding a workpiece comprising the steps of: making a first weld at a first position on said workpiece with a high energy beam, deflecting the high energy beam with at least one deflection lens for making a second weld at a second position on said workpiece, focusing the high energy beam on said workpiece with at least one focusing lens, shaping the high energy beam on said workpiece with at least one astigmatism lens so that the shape of the high energy beam on said workpiece is longer in a direction parallel to a deflection direction of said high energy beam than in a direction perpendicular to said deflection direction of said high energy beam. The invention is also related to the use of an astigmatism lens and to a method for forming a three dimensional article.

IPC Classes  ?

  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 26/342 - Build-up welding
  • B23K 26/70 - Auxiliary operations or equipment
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor

68.

Additive manufacturing of three-dimensional articles

      
Application Number 15450358
Grant Number 09919361
Status In Force
Filing Date 2017-03-06
First Publication Date 2017-06-22
Grant Date 2018-03-20
Owner Arcam AB (Sweden)
Inventor Jonasson, Daniel

Abstract

Provided is a method for forming a three dimensional article comprising the steps of: providing at least one electron beam source emitting an electron beam for at least one of heating or fusing said powder material, where said electron beam source comprises a cathode, an anode, and a grid between said cathode and anode; controlling the electron beam source in at least two modes during said formation of said three dimensional article; applying a predetermined accelerator voltage between said cathode and said anode; applying a predetermined number of different grid voltages between said grid and said cathode for producing a corresponding predetermined number of electron beam currents; and at least one of creating or updating a look-up table or mathematical function during one of the at least two modes, wherein said look-up table or mathematical function defines a relationship between a desired electron beam current and an applied grid voltage.

IPC Classes  ?

  • B33Y 50/00 - Data acquisition or data processing for additive manufacturing
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B28B 1/00 - Producing shaped articles from the material
  • B23K 15/00 - Electron-beam welding or cutting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B29K 105/00 - Condition, form or state of moulded material

69.

Additive manufacturing of three-dimensional articles

      
Application Number 15290635
Grant Number 10525531
Status In Force
Filing Date 2016-10-11
First Publication Date 2017-05-18
Grant Date 2020-01-07
Owner Arcam AB (Sweden)
Inventor Fager, Mattias

Abstract

The present invention relates to a method for prolonging lifetime of a triod electron beam source when forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the method comprising the steps of: adjusting a cathode heating power at a predetermined value above a threshold heating value, which threshold heating value creates a predetermined X-ray signal emanating from the triod electron beam source, fusing the three-dimensional article with the electron beam source having the cathode heating power at a predetermined value above a threshold heating value.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 15/00 - Electron-beam welding or cutting
  • H01J 37/00 - Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 3/10 - Sintering only
  • B23K 15/02 - Control circuits therefor

70.

Additive manufacturing of three-dimensional articles

      
Application Number 15344732
Grant Number 10610930
Status In Force
Filing Date 2016-11-07
First Publication Date 2017-05-18
Grant Date 2020-04-07
Owner Arcam AB (Sweden)
Inventor
  • Nordkvist, Johan
  • Ackelid, Ulf

Abstract

The present invention relates to a methods, computer program products, program elements, and apparatuses for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article. The method comprising the steps of providing at least one electron beam source emitting an electron beam for at least one of heating or fusing the powder material, where the electron beam source comprises a cathode and an anode, and varying an accelerator voltage between the cathode and the anode between at least a first and second predetermined value during the forming of the three-dimensional article.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 3/10 - Sintering only
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor

71.

Method and apparatus for producing a three-dimensional article

      
Application Number 15268849
Grant Number 11571748
Status In Force
Filing Date 2016-09-19
First Publication Date 2017-04-20
Grant Date 2023-02-07
Owner Arcam AB (Sweden)
Inventor Karlsson, Kristofer

Abstract

Apparatus for producing a three-dimensional object layer by layer using a powdery material which can be solidified by irradiating it with an energy beam, said apparatus comprising: a working area onto which layers of powdery material are to be placed; a powder storage unit, where said base surface is supporting a supply of powder in said powder storage unit; a powder distribution member, a pivoted powder pushing device for bringing a portion of powder from said base surface to a position between said distribution member and said working area, said distribution member further being arranged to be moveable towards and across the working area so as to distribute the portion of powder onto the working area, wherein a first portion of said pivoted powder pushing device is movable under said distribution member. An associated method and computer program product are also provided.

IPC Classes  ?

  • B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor
  • B23K 26/342 - Build-up welding
  • B23K 26/70 - Auxiliary operations or equipment
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B29C 64/218 - Rollers
  • B29C 64/205 - Means for applying layers
  • B29C 64/321 - Feeding
  • B29C 64/329 - Feeding using hoppers
  • B29C 64/214 - Doctor blades
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B29C 64/255 - Enclosures for the building material, e.g. powder containers
  • B29C 64/209 - Heads; Nozzles
  • B29C 64/259 - Enclosures for the building material, e.g. powder containers interchangeable
  • B22F 10/10 - Formation of a green body
  • B29L 9/00 - Layered products

72.

Method and apparatus for producing a three-dimensional article

      
Application Number 15268865
Grant Number 10583483
Status In Force
Filing Date 2016-09-19
First Publication Date 2017-04-20
Grant Date 2020-03-10
Owner Arcam AB (Sweden)
Inventor Karlsson, Kristofer

Abstract

A pivoted powder pushing device is provided, comprising a first portion and a contact member, wherein: the contact member is configured to operatively engage a grip arm of the distribution member when the distribution member is positioned at least in part above the base surface, and the first portion is moved via the engagement of the grip arm and the contact member in a first direction opposite a direction of travel of the distribution member, such that the first portion of said pivoted powder pushing device passes under said distribution member. An associated apparatus, method, and computer program product are also provided.

IPC Classes  ?

  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor
  • B23K 26/342 - Build-up welding
  • B23K 26/70 - Auxiliary operations or equipment
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B29C 64/218 - Rollers
  • B29C 64/205 - Means for applying layers
  • B29C 64/321 - Feeding
  • B29C 64/329 - Feeding using hoppers
  • B29C 64/214 - Doctor blades
  • B29C 64/255 - Enclosures for the building material, e.g. powder containers
  • B29C 64/209 - Heads; Nozzles
  • B29C 64/259 - Enclosures for the building material, e.g. powder containers interchangeable
  • B29L 9/00 - Layered products

73.

X-ray calibration standard object

      
Application Number 15245542
Grant Number 10807187
Status In Force
Filing Date 2016-08-24
First Publication Date 2017-03-30
Grant Date 2020-10-20
Owner Arcam AB (Sweden)
Inventor
  • Backlund, Johan
  • Wildheim, Martin

Abstract

An X-ray standard reference object for calibrating a scanning electron beam in an additive manufacturing apparatus by measuring X-ray signals generated by scanning the electron beam onto the reference object, the reference object comprises: a lower and an upper plate being essentially in parallel and attached spaced apart from each other, the upper plate comprises a plurality of holes, wherein a predetermined hollow pattern is provided inside the holes.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • G01T 1/29 - Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 50/00 - Data acquisition or data processing for additive manufacturing
  • H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • H01J 37/30 - Electron-beam or ion-beam tubes for localised treatment of objects

74.

Apparatus for additive manufacturing

      
Application Number 15371617
Grant Number 09950366
Status In Force
Filing Date 2016-12-07
First Publication Date 2017-03-23
Grant Date 2018-04-24
Owner Arcam AB (Sweden)
Inventor Ackelid, Ulf

Abstract

Various embodiments provide a method and apparatus for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table in an additive manufacturing machine, which parts corresponds to successive cross sections of the three-dimensional article. The method comprises the steps of: applying a layer of predetermined thickness of powder particles on the work table, applying a coating on at least a portion of the powder particles, which coating is at least partially covering the powder particles, and fusing the powder particles on the work table with an electron beam.

IPC Classes  ?

  • B05D 3/06 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
  • C23C 14/22 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
  • B28B 1/00 - Producing shaped articles from the material
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • C23C 16/44 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition (CVD) processes characterised by the method of coating
  • C23C 14/00 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 70/00 - Materials specially adapted for additive manufacturing

75.

Method and apparatus for additive manufacturing

      
Application Number 15371637
Grant Number 09713844
Status In Force
Filing Date 2016-12-07
First Publication Date 2017-03-23
Grant Date 2017-07-25
Owner Arcam AB (Sweden)
Inventor Ackelid, Ulf

Abstract

Various embodiments provide a method and apparatus for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table in an additive manufacturing machine, which parts corresponds to successive cross sections of the three-dimensional article. The method comprises the steps of: applying a layer of predetermined thickness of powder particles on the work table, applying a coating on at least a portion of the powder particles, which coating is at least partially covering the powder particles, and fusing the powder particles on the work table with an electron beam.

IPC Classes  ?

  • C23C 16/44 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition (CVD) processes characterised by the method of coating
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B05D 3/06 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
  • B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
  • B28B 1/00 - Producing shaped articles from the material
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • C23C 14/22 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
  • C23C 14/00 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 70/00 - Materials specially adapted for additive manufacturing

76.

Method for additive manufacturing

      
Application Number 15048450
Grant Number 11014161
Status In Force
Filing Date 2016-02-19
First Publication Date 2016-10-27
Grant Date 2021-05-25
Owner Arcam AB (Sweden)
Inventor
  • Elfstroem, Isak
  • Fager, Mattias

Abstract

Various embodiments of the present invention relate to a method of using of a focus lens in additive manufacturing for forming a three-dimensional article through successive fusion, with a high energy beam, of parts of at least one layer of a powder bed provided on a work table, which parts correspond to successive cross sections of the three dimensional article, said method comprising the step of: using said focus lens for varying a spot size of said high energy beam on said powder bed as a function of an already fused thickness of said three-dimensional article below said powder which is to be fused. The invention is also related to a method for forming a three dimensional article.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
  • G05B 15/02 - Systems controlled by a computer electric
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B22F 10/10 - Formation of a green body

77.

Method and apparatus for producing three-dimensional objects

      
Application Number 15190877
Grant Number 10369662
Status In Force
Filing Date 2016-06-23
First Publication Date 2016-10-20
Grant Date 2019-08-06
Owner Arcam AB (Sweden)
Inventor Ljungblad, Ulric

Abstract

The invention concerns a method for producing three-dimensional objects (6) layer by layer using a powdery material (7) which can be solidified by irradiating it with a high-energy beam (4), said method comprising the steps of: applying a first layer of powdery material onto a working area (5); solidifying a part of said first layer by irradiating it with a high-energy beam; and applying a second layer (8) of powdery material onto the first, partly solidified layer. The invention is characterized in that the method comprises the step of: determining a rate at which the temperature of the second layer (8) increases after application onto the first layer. The invention also concerns an apparatus configured to operate according to the above method.

IPC Classes  ?

  • B23K 26/32 - Bonding taking account of the properties of the material involved
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/342 - Build-up welding
  • B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting

78.

Method for verifying characteristics of an electron beam

      
Application Number 15190899
Grant Number 09543116
Status In Force
Filing Date 2016-06-23
First Publication Date 2016-10-20
Grant Date 2017-01-10
Owner Arcam AB (Sweden)
Inventor Lock, Tomas

Abstract

A method is provided for forming a three-dimensional article through successive fusion of parts of a powder bed. The method includes the steps of: applying a first powder layer on a work table; directing an electron beam from an electron beam source over the work table, the directing of the electron beam causing the first powder layer to fuse in first selected locations according to a pre-determined model, so as to form a first part of a cross section of the three dimensional article, and intensity modulating X-rays from the powder layer or from a clean work table with a patterned aperture modulator and a patterned aperture resolver, wherein a verification of at least one of a size, position, scan speed, or shape of the electron beam is achieved by comparing detected intensity modulated X-ray signals with saved reference values.

IPC Classes  ?

  • A61N 5/00 - Radiation therapy
  • H01J 37/304 - Controlling tubes by information coming from the objects, e.g. correction signals
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B28B 1/00 - Producing shaped articles from the material
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor
  • H01J 37/30 - Electron-beam or ion-beam tubes for localised treatment of objects
  • H01J 37/317 - Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. ion implantation
  • H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
  • G01T 1/29 - Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

79.

Method and device for characterizing an electron beam

      
Application Number 14973230
Grant Number 09721755
Status In Force
Filing Date 2015-12-17
First Publication Date 2016-07-21
Grant Date 2017-08-01
Owner Arcam AB (Sweden)
Inventor Lock, Tomas

Abstract

A device for detecting X-rays radiated out of a substrate surface, said device comprising at least one X-ray detector, a resolver grating and a modulator grating, said resolver grating with at least one opening facing towards said X-ray detector is arranged in front of said X-ray detector. Said modulator grating is provided between said resolver grating and said substrate at a predetermined distance from said resolver grating and said substrate, where said modulator grating having a plurality of openings in at least a first direction, wherein said x-rays from said surface is spatially modulated with said modulator grating and resolver grating.

IPC Classes  ?

  • G01N 23/00 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or
  • H01J 37/304 - Controlling tubes by information coming from the objects, e.g. correction signals
  • H01J 37/305 - Electron-beam or ion-beam tubes for localised treatment of objects for casting, melting, evaporating, or etching
  • H01J 37/244 - Detectors; Associated components or circuits therefor
  • H01J 37/30 - Electron-beam or ion-beam tubes for localised treatment of objects
  • H01J 37/317 - Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. ion implantation
  • B23K 15/00 - Electron-beam welding or cutting
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • G01T 1/29 - Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B23K 15/02 - Control circuits therefor
  • B28B 1/00 - Producing shaped articles from the material
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

80.

Method and device for characterizing an electron beam using an X-ray detector with a patterned aperture resolver and patterned aperture modulator

      
Application Number 14973244
Grant Number 09406483
Status In Force
Filing Date 2015-12-17
First Publication Date 2016-07-21
Grant Date 2016-08-02
Owner Arcam AB (Sweden)
Inventor Lock, Tomas

Abstract

A device for detecting X-rays radiated out of a substrate surface, said device comprising at least one X-ray detector, a resolver grating and a modulator grating, said resolver grating with at least one opening facing towards said X-ray detector is arranged in front of said X-ray detector. Said modulator grating is provided between said resolver grating and said substrate at a predetermined distance from said resolver grating and said substrate, where said modulator grating having a plurality of openings in at least a first direction, wherein said x-rays from said surface is spatially modulated with said modulator grating and resolver grating.

IPC Classes  ?

  • A61N 5/00 - Radiation therapy
  • H01J 37/304 - Controlling tubes by information coming from the objects, e.g. correction signals
  • H01J 37/30 - Electron-beam or ion-beam tubes for localised treatment of objects
  • H01J 37/317 - Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. ion implantation

81.

Energy beam size verification

      
Application Number 15077155
Grant Number 09664504
Status In Force
Filing Date 2016-03-22
First Publication Date 2016-07-14
Grant Date 2017-05-30
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

A method for verifying a size of an energy beam spot, said method comprising the steps of providing a first beam spot having a predetermined size and power at a first position on a work piece, varying a focus and/or astigmatism lens setting for said first beam spot until max intensity for the beam spot is detected, comparing the detected settings of said focus lens and/or astigmatism lens for said maximum intensity of the beam spot with stored settings of said focus lens and/or astigmatism lens for the beam spot with said predetermined size and power, repeating step a-c for different predetermined beam powers, repeating step a-d for different positions on said work piece, wherein said beam spot size is verified if each detected settings of said focus lens and/or astigmatism lens are deviating less than a predetermined value from corresponding stored settings of said focus lens and/or astigmatism lens.

IPC Classes  ?

  • G01J 5/02 - Constructional details
  • G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
  • G01B 15/00 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
  • G01P 3/36 - Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
  • G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
  • B23K 15/02 - Control circuits therefor
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/046 - Automatically focusing the laser beam
  • B23K 26/70 - Auxiliary operations or equipment
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

82.

Energy beam position verification

      
Application Number 15077200
Grant Number 09664505
Status In Force
Filing Date 2016-03-22
First Publication Date 2016-07-14
Grant Date 2017-05-30
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

A method for verifying a position of an energy beam spot, said method comprising the steps of: providing a calibrated energy beam having a first focus in a at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said first focus, providing said calibrated energy beam having a second focus in said at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said second focus, comparing said at least two positions created with said first and second focus, wherein said position of the energy beam is verified if said positions created with said first focus are deviating less than a predetermined distance from said positions created with said second focus.

IPC Classes  ?

  • G01J 5/02 - Constructional details
  • G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
  • G01B 15/00 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
  • G01P 3/36 - Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
  • G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
  • B23K 15/02 - Control circuits therefor
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/046 - Automatically focusing the laser beam
  • B23K 26/70 - Auxiliary operations or equipment
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

83.

Method for additive manufacturing

      
Application Number 14950626
Grant Number 10786865
Status In Force
Filing Date 2015-11-24
First Publication Date 2016-06-16
Grant Date 2020-09-29
Owner Arcam AB (Sweden)
Inventor Hellestam, Calle

Abstract

A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed, comprising the steps of: providing at least one model of said three-dimensional article, moving a support structure in z-direction at a predetermined speed while rotating said support structure at a predetermined speed, directing a first and second energy beam causing said powder layer to fuse in first and second selected locations according to said model, wherein a first cover area of said first energy beam on said powder layer is arranged at a predetermined minimum distance and non-overlapping from a second cover area of said second energy beam on said powder layer, a trajectory of said first cover area and a trajectory of said second cover area are at least one of overlapping each other, abutting each other or separated to each other when said support structure is rotated a full lap.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 26/144 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
  • B23K 26/342 - Build-up welding
  • B28B 1/00 - Producing shaped articles from the material
  • B23K 15/02 - Control circuits therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29K 105/00 - Condition, form or state of moulded material

84.

Energy beam position verification

      
Application Number 14750713
Grant Number 09341467
Status In Force
Filing Date 2015-06-25
First Publication Date 2016-02-25
Grant Date 2016-05-17
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

A method for verifying a position of an energy beam spot, said method comprising the steps of: providing a calibrated energy beam having a first focus in a at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said first focus, providing said calibrated energy beam having a second focus in said at least two positions at a work table, detecting said at least two positions of said energy beam spot on said work table created with said energy beam having said second focus, comparing said at least two positions created with said first and second focus, wherein said position of the energy beam is verified if said positions created with said first focus are deviating less than a predetermined distance from said positions created with said second focus.

IPC Classes  ?

  • G01J 5/02 - Constructional details
  • G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
  • G01B 15/00 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
  • G01P 3/36 - Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
  • G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
  • B23K 15/02 - Control circuits therefor
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

85.

Energy beam deflection speed verification

      
Application Number 14750752
Grant Number 09310188
Status In Force
Filing Date 2015-06-25
First Publication Date 2016-02-25
Grant Date 2016-04-12
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

A method for verifying a deflection speed of an energy beam spot, the method comprising the steps of: providing a predetermined pattern on a work table with the energy beam spot while deflecting the energy beam spot with a first deflection speed, detecting first positions of the energy beam spot on the work table created with the first deflection speed, providing the predetermined pattern on a work table with the energy beam spot while deflecting the energy beam spot with a second deflection speed, detecting second positions of the energy beam spot on the work table created with the second deflection speed, comparing the first and second positions, wherein the deflection speed is verified if each one of the first positions are deviating less than a predetermined distance from corresponding second positions.

IPC Classes  ?

  • G01J 5/02 - Constructional details
  • G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
  • G01B 15/00 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
  • G01P 3/36 - Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
  • G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
  • B23K 15/02 - Control circuits therefor
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

86.

Energy beam size verification

      
Application Number 14750779
Grant Number 09347770
Status In Force
Filing Date 2015-06-25
First Publication Date 2016-02-25
Grant Date 2016-05-24
Owner Arcam AB (Sweden)
Inventor Snis, Anders

Abstract

A method for verifying a size of an energy beam spot, said method comprising the steps of providing a first beam spot having a predetermined size and power at a first position on a work piece, varying a focus and/or astigmatism lens setting for said first beam spot until max intensity for the beam spot is detected, comparing the detected settings of said focus lens and/or astigmatism lens for said maximum intensity of the beam spot with stored settings of said focus lens and/or astigmatism lens for the beam spot with said predetermined size and power, repeating step a-c for different predetermined beam powers, repeating step a-d for different positions on said work piece, wherein said beam spot size is verified if each detected settings of said focus lens and/or astigmatism lens are deviating less than a predetermined value from corresponding stored settings of said focus lens and/or astigmatism lens.

IPC Classes  ?

  • G01J 5/02 - Constructional details
  • G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
  • G01B 15/00 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
  • G01P 3/36 - Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
  • G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
  • B23K 15/02 - Control circuits therefor
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling

87.

Method and apparatus for additive manufacturing

      
Application Number 14443016
Grant Number 09505172
Status In Force
Filing Date 2013-11-19
First Publication Date 2015-10-29
Grant Date 2016-11-29
Owner Arcam AB (Sweden)
Inventor Ljungblad, Ulric

Abstract

The present invention relates to a method for forming a three-dimensional article through successive fusion of applied powder. Said method comprising the steps of: providing at least one powder hopper comprising powder to be used for forming said three-dimensional article, providing a predetermined amount of powder at a build support, directing an energy beam over said build support causing at least a portion of said powder to sinter and causing at least a portion of said powder to bond to said build support, directing an energy beam over said build support causing said powder to fuse in selected locations according to a model to form a first portion of said three-dimensional article, rotating said build support around an axis of rotation for creating said three-dimensional article, which three-dimensional article is build up layer by layer in a radial direction with respect to said axis of rotation.

IPC Classes  ?

  • B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B28B 1/00 - Producing shaped articles from the material
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

88.

Powder pre-processing for additive manufacturing

      
Application Number 14439209
Grant Number 09561542
Status In Force
Filing Date 2012-11-06
First Publication Date 2015-10-15
Grant Date 2017-02-07
Owner Arcam AB (Sweden)
Inventor Ackelid, Ulf

Abstract

The present invention relates to a method for removing moisture from powder to be used in an additive manufacturing process for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table, which parts corresponds to successive cross sections of the three-dimensional article, characterized in that said method comprising the steps of: providing at least a first powder tank and at least at least a second powder tank, providing a predetermined amount of powder on a movable table inside said first powder tank, heating the top surface of the powder in said first powder tank to a predetermined temperature interval for removing moisture from said powder, raising said movable table a predetermined distance, moving a predetermined thickness of the powder material from said first powder tank to said second powder tank.

IPC Classes  ?

  • B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B28B 1/00 - Producing shaped articles from the material
  • B28B 17/02 - Conditioning the material prior to shaping
  • B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
  • B22F 7/00 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
  • B29K 105/00 - Condition, form or state of moulded material

89.

Additive manufacturing method and apparatus

      
Application Number 14443015
Grant Number 09718129
Status In Force
Filing Date 2013-11-18
First Publication Date 2015-10-08
Grant Date 2017-08-01
Owner Arcam AB (Sweden)
Inventor
  • Ljungblad, Ulric
  • Wildheim, Martin

Abstract

A method for forming a three-dimensional article, said method comprising the steps of: providing a predetermined amount of powder for forming a first powder layer on a start plate, distributing said predetermined amount of powder with a powder distributor for forming said first powder layer, directing an energy beam over said start plate causing said first powder layer to fuse in selected locations according to a model to form a first cross section of said three-dimensional article. At least one image of the powder to be distributed is captured with a camera at least one time during said distribution of said powder on said start plate for forming said first powder layer and at least one value of at least one parameter in said image detected with said camera is compared with a reference parameter value.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 7/00 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
  • B22F 7/02 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
  • B33Y 10/00 - Processes of additive manufacturing

90.

Method for additive manufacturing of three-dimensional articles

      
Application Number 14621209
Grant Number 09789541
Status In Force
Filing Date 2015-02-12
First Publication Date 2015-09-10
Grant Date 2017-10-17
Owner Arcam AB (Sweden)
Inventor Fager, Mattias

Abstract

A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts correspond to successive cross sections of the three-dimensional article, the method comprising the steps of: providing a model of the at least one three-dimensional article; applying a first powder layer on a work table; directing a first energy beam from a first energy beam source over the work table causing the first powder layer to fuse in first selected locations according to corresponding models to form a first cross section of the three-dimensional article, where the first energy beam is fusing at least a first region of a first cross section with parallel scan lines in a first direction; varying a distance between two adjacent scan lines, which are used for fusing the powder layer, as a function of a mean length of the two adjacent scan lines.

IPC Classes  ?

  • B33Y 80/00 - Products made by additive manufacturing
  • B28B 1/00 - Producing shaped articles from the material
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B29K 105/00 - Condition, form or state of moulded material
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

91.

Method for additive manufacturing

      
Application Number 14547549
Grant Number 10434572
Status In Force
Filing Date 2014-11-19
First Publication Date 2015-06-25
Grant Date 2019-10-08
Owner Arcam AB (Sweden)
Inventor Ljungblad, Ulric

Abstract

A method for forming a three-dimensional article through successive fusion of parts of a powder bed comprising: providing a model of the three dimensional article, applying a first powder layer on a work table, directing an energy beam over the work table causing the first powder layer to fuse in selected locations according to the model to form a first cross section of the three-dimensional article, applying a second powder layer on the work table, directing the energy beam over the work table causing the second powder layer to fuse in selected locations according to the model to form a second cross section of the three-dimensional article, wherein the second layer is bonded to the first layer, detecting a local thickness in at least two positions in at least the second powder layer, varying an energy beam parameter depending on the detected local thickness of the second powder layer.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing

92.

Method for additive manufacturing

      
Application Number 14547538
Grant Number 09789563
Status In Force
Filing Date 2014-11-19
First Publication Date 2015-06-25
Grant Date 2017-10-17
Owner Arcam AB (Sweden)
Inventor
  • Elfstroem, Isak
  • Hellestam, Calle
  • Fager, Mattias

Abstract

The invention relates to a method for forming a three-dimensional article through successive fusion of locations of a powder bed. The method comprising: providing a model of said three-dimensional article; applying a powder layer on a work table; determining a maximum scan length of an energy beam; directing said energy beam from a first energy beam source over said work table with constant energy causing said first powder layer to fuse in first selected locations according to said model to form a first cross section of said three-dimensional article, wherein locations with a shorter scan length than said maximum scan length is provided with a time sink before and/or after said scan line so that the time period between each two adjacent scan lines is constant throughout the manufacture of said three-dimensional article.

IPC Classes  ?

  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 15/02 - Control circuits therefor
  • B23K 15/10 - Non-vacuum electron beam-welding or cutting
  • B23K 26/34 - Laser welding for purposes other than joining
  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B29C 67/00 - Shaping techniques not covered by groups , or

93.

Additive manufacturing of three-dimensional articles

      
Application Number 14547530
Grant Number 09802253
Status In Force
Filing Date 2014-11-19
First Publication Date 2015-06-18
Grant Date 2017-10-31
Owner ARCAM AB (Sweden)
Inventor Jonasson, Daniel

Abstract

The present invention relates to a method for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, said method comprising the steps of: providing at least one electron beam source emitting an electron beam for heating and/or fusing said powder material. Controlling the electron beam source in a first mode when said formation of said three dimensional article is in a first process step. Controlling said electron beam in a second mode when said formation of said three dimensional article is in a second process step, wherein in said first mode an electron beam current from said electron beam source is controlled in a feed-forward mode and in said second mode said electron beam current is controlled in a feed-back mode.

IPC Classes  ?

  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B28B 1/00 - Producing shaped articles from the material
  • B23K 15/00 - Electron-beam welding or cutting
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B29K 105/00 - Condition, form or state of moulded material

94.

Additive manufacturing of three-dimensional articles

      
Application Number 14547584
Grant Number 10130993
Status In Force
Filing Date 2014-11-19
First Publication Date 2015-06-18
Grant Date 2018-11-20
Owner Arcam AB (Sweden)
Inventor
  • Ljungblad, Ulric
  • Ackelid, Ulf

Abstract

The present invention relates to a method for forming a three-dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, the method comprising the step of heating a first portion of a support surface while depositing a layer of powder material on a second portion of the support surface.

IPC Classes  ?

  • B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B28B 1/00 - Producing shaped articles from the material
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B33Y 10/00 - Processes of additive manufacturing
  • B28B 17/00 - SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER - Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B29K 105/00 - Condition, form or state of moulded material
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

95.

Method and apparatus for producing three-dimensional objects

      
Application Number 14618748
Grant Number 09782933
Status In Force
Filing Date 2015-02-10
First Publication Date 2015-06-04
Grant Date 2017-10-10
Owner Arcam AB (Sweden)
Inventor
  • Jonasson, Daniel
  • Larsson, Morgan
  • Ackelid, Ulf
  • Snis, Anders
  • Lock, Tomas

Abstract

e) capable of generating a signal (S) upon detection of lifting of powdery material from the working area (5).

IPC Classes  ?

  • B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
  • B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
  • B29L 9/00 - Layered products

96.

Method for additive manufacturing

      
Application Number 14452294
Grant Number 09676032
Status In Force
Filing Date 2014-08-05
First Publication Date 2015-03-26
Grant Date 2017-06-13
Owner Arcam AB (Sweden)
Inventor Hellestam, Calle

Abstract

A method for forming a three-dimensional article comprising applying a first powder layer on a work table; directing a first energy causing said first powder layer to fuse in first selected locations to form a first cross section where said first energy beam is fusing a first region with parallel scan lines in a first direction and a second region with parallel scan lines in a second direction; fusing at least one of the scan lines in said first region in said first direction immediately before fusing at least one of said scan lines in said second region in said second direction; applying a second powder layer and directing the energy beam causing said second powder layer to fuse in second selected locations where the energy beam is fusing said first region with parallel scan lines in a third direction and said second region in a fourth direction.

IPC Classes  ?

  • B22F 3/10 - Sintering only
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
  • B33Y 10/00 - Processes of additive manufacturing
  • B28B 1/00 - Producing shaped articles from the material
  • B29K 105/00 - Condition, form or state of moulded material

97.

Method for additive manufacturing

      
Application Number 14452308
Grant Number 09676033
Status In Force
Filing Date 2014-08-05
First Publication Date 2015-03-26
Grant Date 2017-06-13
Owner Arcam AB (Sweden)
Inventor Hellestam, Calle

Abstract

A method for forming a three-dimensional article through successive fusion of parts of a powder bed, applying a first powder layer on a work table, directing a first energy beam from a first energy beam source over said work table causing said first powder layer to fuse in first selected locations according to a corresponding model to form a first cross section of said at least one three-dimensional article, where said first energy beam is fusing a first article with parallel scan lines in a first direction, fusing a second scan line in said first direction in said first layer in said first article within a predetermined time interval after fusing a first scan line in said first article, wherein at least one intermediate scan line is fused within said time interval at another predetermined position and where said first and second scan lines are adjacent to each other.

IPC Classes  ?

  • B22F 3/10 - Sintering only
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
  • B33Y 10/00 - Processes of additive manufacturing
  • B28B 1/00 - Producing shaped articles from the material
  • B29K 105/00 - Condition, form or state of moulded material

98.

Powder distribution in additive manufacturing of three-dimensional articles

      
Application Number 14252984
Grant Number 09505057
Status In Force
Filing Date 2014-04-15
First Publication Date 2015-03-12
Grant Date 2016-11-29
Owner Arcam AB (Sweden)
Inventor
  • Nordkvist, Johan
  • Ackelid, Ulf
  • Snis, Anders

Abstract

The present invention relates to a method for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table. Said method comprising the steps of: providing at least a first and second powder tank, providing a first type of powder in said first powder tank having a first particle size distribution, providing a second type of powder in said second powder tank having a second particle size distribution, providing a first sub-layer of said first type of powder on said work table, providing a second sub-layer of said second type of powder on top of said first layer of said first type of powder, fusing said first and second sub-layers simultaneously with a high energy beam from a high energy beam source for forming a first cross section of said three-dimensional article.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B23K 15/00 - Electron-beam welding or cutting
  • B23K 26/342 - Build-up welding
  • B28B 1/00 - Producing shaped articles from the material
  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 1/00 - Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
  • B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

99.

Powder distribution in additive manufacturing

      
Application Number 14390978
Grant Number 09126167
Status In Force
Filing Date 2012-05-11
First Publication Date 2015-02-26
Grant Date 2015-09-08
Owner Arcam AB (Sweden)
Inventor Ljungblad, Ulric

Abstract

An additive manufacturing method for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table. Providing at least one rotatable powder container above said work table, said powder container comprising at least one exit for providing powder to a powder table arranged beside said work table, at least one opening inside said container is spatially separated from and connected to said at least one exit. Ejecting a fixed amount of powder from said powder container during at least one predetermined segment of rotational angles of said powder container, from the exit of said powder container onto said powder table, wherein said fixed amount is determined by the shape and size of the at least one opening inside said container. Distributing said powder onto said work table with a powder distributor.

IPC Classes  ?

  • B29C 67/00 - Shaping techniques not covered by groups , or
  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B01J 6/00 - Calcining; Fusing
  • B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor

100.

Method and apparatus for additive manufacturing

      
Application Number 14299887
Grant Number 09468973
Status In Force
Filing Date 2014-06-09
First Publication Date 2015-01-01
Grant Date 2016-10-18
Owner ARCAM AB (Sweden)
Inventor Ljungblad, Ulric

Abstract

A method for forming a three-dimensional article comprising the steps of: applying a model of the three dimensional article, applying a first powder layer on a work table, directing a first electron beam from a first electron beam source over the work table causing the first powder layer to fuse in first selected locations according to the model to form a first cross section of the three-dimensional article, directing a second electron beam from a second electron beam source over the work table, registering at least one setting of the first electron beam source, registering at least one setting of the second electron beam source, correcting the position of the second electron beam depending on the at least one setting of the first electron beam source and the at least one setting of the second electron beam source.

IPC Classes  ?

  • B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
  • B22F 3/10 - Sintering only
  • B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
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