TRUMPF Laser- und Systemtechnik GmbH

Germany

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B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing 112
B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses 74
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
B23K 26/073 - Shaping the laser spot 72
B33Y 10/00 - Processes of additive manufacturing 68
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Found results for  patents
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1.

BIPOLAR PLATE FOR A FUEL CELL AND PROCESS FOR WELDING A BIPOLAR PLATE

      
Application Number 18517100
Status Pending
Filing Date 2023-11-22
First Publication Date 2024-03-14
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor Bocksrocker, Oliver

Abstract

A method for laser welding of a bipolar plate for a fuel cell is provided. The bipolar plate includes two metallic plate parts. The method includes producing at least one continuously enclosing first weld seam with a first seam width, and producing at least one second weld seam with a second seam width. The second seam width is at least 10% greater than the first seam width.

IPC Classes  ?

  • B23K 26/244 - Overlap seam welding
  • B23K 26/073 - Shaping the laser spot
  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
  • H01M 8/021 - Alloys based on iron
  • H01M 8/0247 - Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
  • H01S 3/067 - Fibre lasers
  • H01S 3/102 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation

2.

METHOD AND SYSTEM FOR LASER BUILD-UP WELDING

      
Application Number 18518675
Status Pending
Filing Date 2023-11-24
First Publication Date 2024-03-14
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Sautter, Bjoern
  • Wessinger, Benedikt
  • Opitz, Marco
  • Scholz, Andreas
  • Speker, Nicolai
  • Hesse, Tim

Abstract

A method for coating a rotating surface region of a workpiece by laser build-up welding includes fusing a powdery coating material prior to impact on the workpiece in a laser beam that is directed at the surface region, capturing a spatially resolved intensity profile of thermal radiation emitted by the workpiece, comparing at least one property of the intensity profile with at least one predefined target value, and modifying at least one parameter of a coating procedure based on a result of the comparison.

IPC Classes  ?

  • B23K 26/342 - Build-up welding
  • B23K 26/70 - Auxiliary operations or equipment
  • B23K 31/12 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to investigating the properties, e.g. the weldability, of materials

3.

COMPRESSED STORAGE OF INFORMATION FOR ADDITIVE MANUFACTURING

      
Application Number EP2023072596
Publication Number 2024/052069
Status In Force
Filing Date 2023-08-16
Publication Date 2024-03-14
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Gronle, Marc
  • Coupek, Daniel
  • Wagner, Joachim

Abstract

When all the figures of the drawing are considered jointly, the invention relates in summary to a method for compressing the volume of data in a file (26), for guiding a tool (16) along manufacturing coordinates for the additive manufacturing of a component (14), in a computer (27). In this case, at least one vector is determined and stored in the file (26), which vector, together with an algorithm (32), defines manufacturing parameters for filling a first region of the component (14). The algorithm (32) can be stored in the file (26) or stored in a library (30) and reference can be made to the algorithm (32) in the file (26). Alternatively or additionally, a second region of the component (14) to be filled can be defined in the file (26) by virtue of the fact that a first region is defined in the file (26) and the file (26) stores where the second region (38b) is intended to be formed and that said second region is intended to be formed in the same manner as the first region. In addition to a second region (38b), this method can be continued for any number of further regions. In a method (12) according to the invention for manufacturing the component (14), the manufacturing parameters are calculated back to manufacturing coordinates. The invention also relates to a device (10) for carrying out the method (12) for manufacturing the component (14).

IPC Classes  ?

  • G05B 19/408 - Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by data handling or data format, e.g. reading, buffering or conversion of data
  • G05B 19/4093 - Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
  • G05B 19/41 - Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by interpolation, e.g. the computation of intermediate points between programmed end points to define the path to be followed and the rate of travel along that path
  • B29C 64/386 - Data acquisition or data processing for additive manufacturing

4.

TRANSPARENT COMPONENT WITH A FUNCTIONALISED SURFACE

      
Application Number EP2023073719
Publication Number 2024/052178
Status In Force
Filing Date 2023-08-29
Publication Date 2024-03-14
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor Zimmermann, Felix

Abstract

The invention relates to a transparent component (1) with a functionalised surface, wherein the surface has dimples (2) and is thereby functionalised, wherein the functionalisation of the surface is an anti-glare functionalisation and the fill area of dimples is between 20% and 95%.

IPC Classes  ?

  • C03C 23/00 - Other surface treatment of glass not in the form of fibres or filaments
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses

5.

CALIBRATING MULTIPLE LASER BEAMS FOR ADDITIVE MANUFACTURING

      
Application Number 18052582
Status Pending
Filing Date 2022-11-04
First Publication Date 2024-03-07
Owner
  • TRUMPF Laser- und Systemtechnik GmbH (Germany)
  • TRUMPF Additive Manufacturing Italia s.r.l. (Italy)
Inventor
  • Cavalcabo, Guglielmo
  • Blickle, Valentin
  • Sailer, Christof
  • Krauter, Johann
  • Mantoan, Elia

Abstract

A method of automated alignment of scanning optics includes the steps of irradiating an object area of a layer of a powdered material provided on a building platform with at least one irradiation beam and irradiating a calibration area of the layer with at least one irradiation beam. A first irradiation beam is guided with a first scanning optic over an intermediate top face thereby melting a first calibration pattern into the intermediate top face and a second irradiation beam is guided with a second scanning optic over the intermediate top face thereby melting a second calibration pattern into the intermediate top face. At least one image is acquired of the intermediate top face and image points related to the geometrical features of the calibration patterns are identified so that a spatial offset between the geometrical features can be derived. Based on the spatial offset, the scanning optics are aligned.

IPC Classes  ?

  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • 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 12/45 - Two or more
  • 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 40/00 - 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 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]

6.

MANUFACTURING DEVICE AND METHOD FOR THE ADDITIVE MANUFACTURING OF COMPONENTS FROM A POWDER MATERIAL AND METHOD FOR DETERMINING A CORRECTION FUNCTION FOR A MANUFACTURING DEVICE OF THIS TYPE OR A METHOD OF THIS TYPE

      
Application Number EP2023072138
Publication Number 2024/041899
Status In Force
Filing Date 2023-08-10
Publication Date 2024-02-29
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Allenberg-Rabe, Matthias
  • Coupek, Daniel

Abstract

The invention relates to a manufacturing device (1) for the additive manufacturing of components (3) from a powder material, comprising: - a beam-generating device (5), which is designed to generate an energy beam (7) having a beam profile (8) which is not rotationally symmetrically about a beam axis (A) of the energy beam (7); - a beam-rotating device (15), which is designed to rotate the beam profile (8) of the energy beam (7) about the beam axis (A); - a scanner device (9), which is designed to move the energy beam (7) in a working region (11) and to irradiate the working region (11) locally selectively with the energy beam (7) in order to produce, by means of the energy beam (7), a component (3) from the powder material located in the working region (11); and - a control device (19), which is operatively connected to the beam-rotating device (15) and to the scanner device (9) and is designed to control the beam-rotating device (15) and the scanner device (9); wherein the control device (19) is designed to correct control of the scanner device (9) according to a current angle of rotation of the beam-rotating device (15).

IPC Classes  ?

  • B22F 10/31 - Calibration of process steps or apparatus settings, e.g. before or during manufacturing
  • B22F 10/36 - Process control of energy beam parameters
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B22F 12/44 - Radiation means characterised by the configuration of the radiation means
  • B22F 12/49 - Scanners
  • B23K 26/073 - Shaping the laser spot

7.

SYSTEM FOR PROCESSING A MATERIAL BY MEANS OF ULTRASHORT LASER PULSES

      
Application Number 18331204
Status Pending
Filing Date 2023-06-08
First Publication Date 2024-02-29
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Flamm, Daniel
  • Kleiner, Jonas

Abstract

A system includes an ultrashort pulse laser for providing a laser beam, a hollow core fiber, an input coupling optical unit configured to input couple the laser beam into the hollow core fiber, a lens device on which an output coupled laser beam from the hollow core fiber is incident, a beam shaping element on which the laser beam emerging from the lens device is incident, and a focusing optical unit. The lens device is configured to adjust a divergence angle of the output coupled laser beam for adjusting a beam diameter of the laser beam on the beam shaping element. The beam shaping element is configured to impose upon the laser beam a quasi-non-diffractive beam shape with a focal zone that is elongated in the beam propagation direction. The focusing optical unit is configured to set a penetration depth of the focal zone in or on the material.

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses

8.

MEASURING DEVICE, MANUFACTURING DEVICE COMPRISING SUCH A MEASURING DEVICE, AND METHOD FOR OPERATING A MANUFACTURING DEVICE FOR GENERATIVE MANUFACTURING OF A COMPONENT PART FROM A POWDER MATERIAL

      
Application Number 18503204
Status Pending
Filing Date 2023-11-07
First Publication Date 2024-02-29
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Blickle, Valentin
  • Peters, Julia
  • Gronle, Marc

Abstract

A measuring device for aligning a blueprint coordinate system with a build level coordinate system of a working region of a generative manufacturing device arranged in a build level includes a first sensor device configured to cover a first coverage region of the working region with a first measurement accuracy, a selection module configured to select at least one region of interest within the first coverage region, a second sensor device configured to cover the at least one selected region of interest with a second measurement accuracy, the second measurement accuracy being higher than the first measurement accuracy, and an alignment module configured to determine at least one alignment of the blueprint coordinate system relative to the build level coordinate system, including an angle alignment and/or a translation alignment, based on the covered region of interest.

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
  • B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

9.

DEVICE AND METHOD FOR ADDITIVE MANUFACTURING WITH FRESH-WATER-FREE EMERGENCY COOLING

      
Application Number EP2023072137
Publication Number 2024/041898
Status In Force
Filing Date 2023-08-10
Publication Date 2024-02-29
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor Härtig, Markus

Abstract

With reference to the drawing, the invention relates in summary to an emergency cooling system (14) for a device (10), in particular in the form of a device for additive manufacturing by means of laser metal fusion. The device (10) comprises a temperature-critical component (22a) and optionally at least one further temperature-critical component (22b-d), which are disposed both on a main cooling system (12) and on an emergency cooling system (14) in order to be actively cooled by a cooling medium. The emergency cooling system (14) comprises an emergency pump (18) and a machine frame (46), which is disposed at least in portions on an emergency cooling circuit (42) and in particular also on a main cooling circuit (40). The machine frame (46) provides the mechanically necessary stability of the device (10) and, in a synergy effect, also functions as a cooling heat sink. The invention also relates to a method (54) for operating the device (10), in which a cooling medium is guided in the emergency cooling circuit (42) through the machine frame (46).

IPC Classes  ?

10.

PRODUCTION OF BIPOLAR PLATES FROM SHEET METAL FOILS

      
Application Number 18489109
Status Pending
Filing Date 2023-10-18
First Publication Date 2024-02-08
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Ganter, Robert
  • Scharfenberg, Christoph

Abstract

A method for producing bipolar plates for production of fuel cells includes uncoiling a first sheet metal foil from a first sheet metal foil coil, and uncoiling a second sheet metal foil from a second sheet metal foil coil, forming the first sheet metal foil and the second sheet metal foil, allocating the first sheet metal foil and the second sheet metal foil based on formed structures of the first sheet metal foil and the second sheet metal foil, and laser welding the first sheet metal foil and the second sheet metal foil transversely to a feed direction of the first sheet metal foil and the second sheet metal foil in a first joining station. The first joining station mutually compresses the first sheet metal foil and the second sheet metal foil. The method further includes removing bipolar plates from the first sheet metal foil and second sheet metal foil.

IPC Classes  ?

  • B23K 26/26 - Seam welding of rectilinear seams
  • H01M 8/0206 - Metals or alloys
  • H01M 8/0228 - Composites in the form of layered or coated products
  • H01M 8/0297 - Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other

11.

COMBINATION DEVICE AND OPTICAL SYSTEM

      
Application Number 18489877
Status Pending
Filing Date 2023-10-19
First Publication Date 2024-02-08
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Kumkar, Malte
  • Grossmann, Daniel

Abstract

A combination device includes at least two inputs and one or more outputs. Each input is for entry of a respective input beam. Each output is for exit of a respective output beam. The combination device is configured to form the respective output beam through a coherent combination of two input beams. The combination device is configured to set a polarization direction of the respective output beam based on a relative phase position of individual phases of the two input beams from which the respective output beam is formed through the coherent combination.

IPC Classes  ?

  • G02B 27/14 - Beam splitting or combining systems operating by reflection only
  • G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising

12.

SUPERPOSITION DEVICE AND OPTICAL SYSTEM

      
Application Number 18489885
Status Pending
Filing Date 2023-10-19
First Publication Date 2024-02-08
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor Kumkar, Malte

Abstract

A superposition device includes four inputs, each respective input for entry of a respective one of four input beams, an output for exit of an output beam, a first combination device for coherent combination of a first input beam and a second input beam to form a first superposition beam, a second combination device for coherent combination of a third input beam and a fourth input beam to form a second superposition beam, and a third combination device for forming the output beam by coherent combination of the first superposition beam and the second superposition beam. The superposition device is configured to set both a polarization direction and a power of the output beam independently of one another based on relative phase positions of individual phases of the four input beams fed to the four inputs in relation to one another.

IPC Classes  ?

  • G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising
  • G02B 27/14 - Beam splitting or combining systems operating by reflection only

13.

METHOD FOR WELDING METAL-CONTAINING, BENT BAR-TYPE CONDUCTORS, WITH INTENSITY REDISTRIBUTION IN AN INITIAL PHASE AND AN END PHASE

      
Application Number 18484471
Status Pending
Filing Date 2023-10-11
First Publication Date 2024-02-01
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Speker, Nicolai
  • Hesse, Tim

Abstract

A method for welding bar-type conductors includes arranging at least two bar-type conductors in partially overlapping fashion, and welding the at least two bar-type conductors to one another by using a processing laser beam. The processing laser beam traverses a welding contour relative to the bar-type conductors. The traversing of the welding contour includes an initial phase, a main phase and an end phase. In the initial phase, in a partial region of a beam cross section of the processing laser beam, an intensity of the processing laser beam, which is spatially averaged over the partial region, is increased over time. In the main phase, the spatially averaged intensity, which is achieved at the end of the initial phase, is kept at least substantially constant over time. In the end phase, the spatially averaged intensity, starting from the intensity at the end of the main phase, is reduced over time.

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/244 - Overlap seam welding
  • B23K 26/073 - Shaping the laser spot
  • H02K 15/04 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines

14.

OPTICAL ASSEMBLY FOR CONVERTING AN INPUT LASER BEAM INTO A LINEAR OUTPUT BEAM

      
Application Number EP2023070544
Publication Number 2024/023071
Status In Force
Filing Date 2023-07-25
Publication Date 2024-02-01
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Heimes, Andreas
  • Beck, Torsten
  • Lingel, Christian

Abstract

The invention relates to an optical assembly (30) for converting an input laser beam (20) into an output beam (44), which propagates along a propagation direction (z) and which, in a working plane (48), has a beam cross-section with non-vanishing intensity that is extended along a first direction (y) and extends along a second direction (x) perpendicular to the first direction (y) and to the propagation direction (z). The invention also relates to a laser system (10) for generating radiation with an intensity distribution (L) that has a homogenised intensity profile in the beam cross-section.

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/073 - Shaping the laser spot

15.

BEAM-GUIDING DEVICE FOR GUIDING AN ENERGY BEAM AND MANUFACTURING DEVICE FOR ADDITIVELY MANUFACTURING COMPONENTS FROM A POWDER MATERIAL AND HAVING SUCH A BEAM-GUIDING DEVICE

      
Application Number EP2023067097
Publication Number 2024/017561
Status In Force
Filing Date 2023-06-23
Publication Date 2024-01-25
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Wagenblast, Philipp
  • Allenberg-Rabe, Matthias

Abstract

The invention relates to a beam-guiding device (13) for guiding an energy beam (7) along a beam path (19), with at least one first beam-deflecting element (21), which can be moved between a first functional position and a second functional position, wherein the first beam-deflecting element (21) in the first functional position is arranged at a deflecting position (15) in the beam path (19) and is set up to deflect the energy beam (7) onto a target beam axis (A), and in the second functional position to allow the energy beam (7) to propagate further along the beam path (19), and with a plurality of second beam-deflecting elements (23), which in at least one functional state of the beam-guiding device (13) are arranged in the beam path (19) and are set up so that the energy beam (7) coming from the deflecting position (15) in the second functional position of the first beam-deflecting element (21) is thereby guided along the beam path (19) back to the deflecting position (15) and onto the target beam axis (A).

IPC Classes  ?

  • B22F 10/36 - Process control of energy beam parameters
  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 12/44 - Radiation means characterised by the configuration of the radiation means
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
  • G02B 27/10 - Beam splitting or combining systems
  • G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising

16.

METHOD FOR LASER WELDING BENT, ALUMINUM-CONTAINING BAR-TYPE CONDUCTORS, IN PARTICULAR FOR AN ELECTRIC MOTOR

      
Application Number 18482039
Status Pending
Filing Date 2023-10-06
First Publication Date 2024-01-25
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Speker, Nicolai
  • Hesse, Tim
  • Beranek, Matthias

Abstract

A method for laser welding includes arranging two bar-type conductors next to one another with a partial overlap, and welding the two bar-type conductors to one another using a processing laser beam. A weld bead is formed on a common base surface of the bar-type conductors. During the welding, the processing laser beam is guided so that a welding contour is placed relative to the bar-type conductors. An advancing rate of the processing laser beam along the welding contour is selected such that the weld bead has a non-liquid oxide skin inside which liquid bar-type conductor material accumulates. The non-liquid oxide skin is partially broken open by the processing laser beam only on an upwardly facing end face of the weld bead, and remains undamaged in a surrounding region of the weld bead that extends downward from the upwardly facing end face and around the entire weld bead.

IPC Classes  ?

17.

APPARATUS AND METHOD FOR LASER MACHINING A WORKPIECE

      
Application Number 18362995
Status Pending
Filing Date 2023-08-01
First Publication Date 2024-01-18
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Hesse, Tim
  • Flamm, Daniel
  • Kaiser, Myriam

Abstract

An apparatus for laser machining a workpiece in a machining plane includes a first laser machining unit for forming a first focal zone which extends in a first main direction of extent, and at least one further laser machining unit for forming at least one further focal zone which extends in a further main direction of extent oriented transversely to the first main direction of extent. The first focal zone and the at least one further focal zone are spaced apart from one another parallel to the machining plane at a work distance. The first laser machining unit and the at least one further laser machining unit are movable in an advancement direction that is oriented parallel to the machining plane. The workpiece comprises a material that is transparent to a laser beam which respectively forms the first focal zone and the at least one further focal zone.

IPC Classes  ?

  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light

18.

APPARATUS AND METHOD FOR LASER MACHINING A WORKPIECE

      
Application Number 18360848
Status Pending
Filing Date 2023-07-28
First Publication Date 2024-01-18
Owner TRUMPF Laser-und Systemtechnik GmbH (Germany)
Inventor
  • Kaiser, Myriam
  • Flamm, Daniel
  • Kleiner, Jonas

Abstract

An apparatus for laser machining a workpiece with a material transparent to the laser machining includes a first beam shaping device with a beam splitting element for splitting a first input beam into a plurality of component beams, and a focusing optical unit configured to image the plurality of component beams into at least one focal zone. The first input beam is split by the beam splitting element by phase imposition on the first input beam. The component beams are focused into different partial regions of the at least one focal zone for forming the at least one focal zone. The at least one focal zone is introduced by the focusing optical unit into the material for laser machining the workpiece. Material modifications associated with a crack formation in the material are produced in the material by exposing the material to the at least one focal zone.

IPC Classes  ?

  • B23K 26/53 - Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • C03B 33/02 - Cutting or splitting sheet glass; Apparatus or machines therefor

19.

APPARATUS AND METHOD FOR LASER MACHINING A WORKPIECE

      
Application Number 18363015
Status Pending
Filing Date 2023-08-01
First Publication Date 2024-01-11
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Kaiser, Myriam
  • Flamm, Daniel
  • Zimmermann, Felix
  • Kleiner, Jonas

Abstract

An apparatus for laser machining a workpiece includes a first beam shaping device comprising a beam splitting element for splitting a first input beam into a plurality of component beams, and a focusing optical unit configured to image the component beams into at least one focal zone. The first input beam is split by the beam splitting element by phase imposition on the first input beam. The component beams are focused into different partial regions of the at least one focal zone for forming the at least one focal zone. The at least one focal zone is introduced into the material at a work angle with respect to an outer side of the workpiece for the laser machining of the workpiece. Material modifications associated with a change of a refractive index of the material are produced in the material by exposing the material to the at least one focal zone.

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/359 - Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing

20.

METHOD AND PLANNING DEVICE FOR PLANNING A LOCALLY SELECTIVE IRRADIATION OF A WORKING AREA WITH A PLURALITY OF ENERGY BEAMS, METHOD AND MANUFACTURING DEVICE FOR THE ADDITIVE MANUFACTURING OF A COMPONENT FROM A POWDER MATERIAL, AND COMPUTER PROGRAM FOR CARRYING OUT SUCH A METHOD

      
Application Number EP2023064577
Publication Number 2024/002609
Status In Force
Filing Date 2023-05-31
Publication Date 2024-01-04
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor Gutmann, Bernhard

Abstract

The invention relates to a method for planning a locally selective irradiation of a working area (15) with a plurality of energy beams (11), in order by means of the energy beams (11) to manufacture a component (3) layer by layer from a plurality of layers of a powder material (5) arranged one after the other at successive times in a sequence of layers in the working area (15), wherein - a first displacement of a first irradiation section (19.1) for a first energy beam (11.1) of the plurality of energy beams (11) along a first irradiation area (21.1) on the working area (15) from a first starting position (23.1) to a first end position (25.1) within the first irradiation area (21.1) and - a second displacement of a second irradiation section (19.2) for a second energy beam (11.2) of the plurality of energy beams (11) in a second irradiation area (21.2) on the working area (15) from a second starting position (23.2) to a second end position (25.2) within the second irradiation area (21.2) - are coordinated with one another in such a way that • an irradiation of the second irradiation area (21.2) with the second energy beam (11.2) only begins when the first irradiation section (19.1) and the second starting position (23.2) for the second irradiation section (19.2) are not arranged relative to one another within an interaction zone (27), and that • a beginning of irradiation in the second irradiation section (19.2) is timed to be coordinated with a beginning of irradiation in the first irradiation section (19.1), wherein - an irradiation plan for the locally selective irradiation of the working area (15) with the energy beams (11) is obtained or amended.

IPC Classes  ?

  • 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 12/45 - Two or more
  • 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

21.

METHOD FOR PLANNING THE LOCAL SOLIDIFICATION OF A LAYER OF POWDER MATERIAL WHEN MANUFACTURING A THREE-DIMENSIONAL OBJECT LAYER BY LAYER

      
Application Number EP2023064576
Publication Number 2023/247147
Status In Force
Filing Date 2023-05-31
Publication Date 2023-12-28
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Gutmann, Bernhard
  • Maurer, Dominik

Abstract

The invention relates to a method for planning the local solidification of a layer of powder material with a when manufacturing a three-dimensional object layer by layer, the method comprising the following steps: step a): in a connected area (18(I)) of the layer (7) to be solidified, at least one inskin area (15(II)) and at least one downskin area (14(II)) is determined; step b): an inskin pattern (21) comprising inskin vectors (1', 3', 4', 6', 7', 9', 10', 12', 13') is defined for each inskin area (15(II)), and a downskin pattern (22) comprising downskin vectors (2', 5', 8', 11', 14') is defined for each downskin area (14(II)), the inskin pattern (21) being defined independently of the definition of the downskin pattern (22); step c): a processing sequence of all inskin vectors (1', 3', 4', 6', 7', 9', 10', 12', 13') and downskin vectors (2', 5', 8', 11', 14') is defined; the method is characterised in that in step c), a plurality of inskin vector blocks (23a, 23b), each comprising one or more inskin vectors (1', 3', 4', 6', 7', 9', 10', 12', 13') to be successively processed, and a plurality of downskin vector blocks (24a, 24b), each comprising one or more downskin vectors (2', 5', 8', 11', 14') to be successively processed, are defined, and a vector-block sequence for processing the inskin vector blocks (23a, 23b) and the downskin vector blocks (24a, 24b) is defined, in which vector-block sequence inskin vector blocks (23a, 23b) and downskin vector blocks (24a, 24b) alternate. This invention allows for high-quality, accelerated exposure of connected downskin areas (14(II)) and inskin areas (15(II)) to be performed while avoiding overheating of these areas.

IPC Classes  ?

  • 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 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
  • 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

22.

METHOD FOR SEPARATING A WORKPIECE

      
Application Number 18338357
Status Pending
Filing Date 2023-06-21
First Publication Date 2023-11-23
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Kleiner, Jonas
  • Flamm, Daniel
  • Kumkar, Malte
  • Wendt, Michael

Abstract

A method for separating a workpiece includes removing material of the workpiece along a separation line by using a laser beam comprising ultrashort laser pulses of an ultrashort pulse laser. The material of the workpiece is transparent to a wavelength of the laser beam, and has a refractive index between 2.0 and 3.5. The method further includes separating the workpiece along a notch formed by the removal of the material.

IPC Classes  ?

  • B23K 26/38 - Removing material by boring or cutting
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses

23.

METHOD FOR DIVIDING A TRANSPARENT WORKPIECE

      
Application Number 18221501
Status Pending
Filing Date 2023-07-13
First Publication Date 2023-11-23
Owner
  • Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. (Germany)
  • Trumpf Laser- und Systemtechnik Gmbh (Germany)
Inventor
  • Blothe, Markus
  • Chambonneau, Maxime
  • Nolte, Stefan
  • Kumkar, Malte

Abstract

The invention relates to a method for dividing a transparent workpiece (1) by means of pulsed laser radiation (2) by way of creating a beam convergence zone (3) in the volume of the workpiece, in which the intensity of the laser radiation (2) exceeds a threshold value for non-linear absorption, wherein the beam convergence zone (3) and the workpiece (1) are moved relative to each other, thereby creating a two-dimensional weakening in the workpiece (1) extending along a predetermined separating line (4), and wherein the workpiece (1) is subsequently divided along the separating line (4). The invention proposes that by selecting the duration of the energy input generated by the non-linear absorption of the pulsed laser radiation and by spatial beam shaping, non-linear propagation of the laser radiation (2) in the volume (1) of the workpiece outside the beam convergence zone (3) is suppressed.

IPC Classes  ?

  • H01L 21/78 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
  • B23K 26/53 - Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • H01L 21/268 - Bombardment with wave or particle radiation with high-energy radiation using electromagnetic radiation, e.g. laser radiation

24.

DEVICE AND METHOD FOR SEPARATING A MATERIAL

      
Application Number 18335152
Status Pending
Filing Date 2023-06-15
First Publication Date 2023-11-16
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Flamm, Daniel
  • Hellstern, Julian
  • Kleiner, Jonas

Abstract

A method for separating a workpiece includes providing ultrashort laser pulses using an ultrashort pulse laser, and introducing material modifications into the workpiece along a separation line using the ultrashort laser pulses. The workpiece includes a transparent material. The method further includes separating the material of the workpiece along the separation line. The laser pulses form a laser beam that is incident onto the workpiece at a work angle. An optical aberration of the laser pulses during a transition into the material of the workpiece is reduced by an aberration correction device. The laser beam has a non-radially symmetric transverse intensity distribution, with the transverse intensity distribution appearing elongate in a direction of a first axis in comparison with a second axis perpendicular to the first axis.

IPC Classes  ?

  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/53 - Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece

25.

APPARATUS AND METHOD FOR LASER MACHINING A WORKPIECE

      
Application Number 18357186
Status Pending
Filing Date 2023-07-24
First Publication Date 2023-11-16
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Flamm, Daniel
  • Jenne, Michael
  • Heiming, Henning

Abstract

An apparatus for laser machining a workpiece includes a beam shaping device for forming a focal zone from an input laser beam incident on the beam shaping device, and a telescope device for imaging the focal zone into a material of the workpiece. The beam shaping device is configured to impose a phase on a beam cross section of the input laser beam in such a way that the focal zone extends along a longitudinal centre axis which is curved at least in certain portions. The telescope device is assigned a beam splitting device for splitting an output laser beam output coupled from the beam shaping device into a plurality of polarized partial beams, each of which has one of at least two different polarization states. The focal zone has an asymmetrical cross section in a plane oriented perpendicular to the longitudinal centre axis.

IPC Classes  ?

  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • 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

26.

MEASURING DEVICE FOR MEASURING A LASER LINE BEAM

      
Application Number EP2023061259
Publication Number 2023/217554
Status In Force
Filing Date 2023-04-28
Publication Date 2023-11-16
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor Zeller, Thomas

Abstract

The invention relates to a measuring device (10) for measuring a laser line beam (1) generated by a laser system (100), the measuring device (10) having: a process chamber (20) which has an entrance region (22) for entry of the laser line beam (1) into the process chamber (20), a beam profile measurement apparatus (30) which is arranged in the process chamber (20) and is designed to measure the laser line beam (1) entering the entrance region (22), and a trim device (60) for trimming the laser line beam (1) before entry into the process chamber (20). The trim device (60) has a plurality of at least three individual mirrors (64), which can be moved by at least one drive, for trimming the laser line beam (1) before entry into the process chamber (20), wherein the individual mirrors (64) can be moved at least in some regions in at least one movement direction (3) relative to a linear extent of the laser line beam (1) specified by the measuring device (10).

IPC Classes  ?

  • G01J 1/42 - Photometry, e.g. photographic exposure meter using electric radiation detectors
  • B23K 26/70 - Auxiliary operations or equipment
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for

27.

METHOD FOR THE LAYERED MANUFACTURING OF AT LEAST ONE OBJECT ON A ROUGHENED BASE ELEMENT

      
Application Number EP2023059217
Publication Number 2023/217468
Status In Force
Filing Date 2023-04-06
Publication Date 2023-11-16
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Blickle, Valentin
  • Essig, Nicolai

Abstract

The invention relates to a method for operating a system (1) for the layered manufacturing of at least one object on a base element (13) by locally compacting pulverulent material (5) in a respective layer using a work laser (17), comprising the following steps: Step A) The base element (13) is arranged on a movable piston plate (12), Step B) A preliminary measurement is carried out in the system (1), a measurement pattern (24) on the upper side (23) of the base element (13) being measured using a measuring device (26), step C) based on data from the preliminary measurement, the layered manufacturing of the at least one object on the base element (13) is prepared and carried out, characterized in that, after step A) and before step B), a step A') takes place in which a surface (22) of the base element (13) facing the work laser (17) is roughened in a treatment area (21) of the base element (13) using the work laser (17) in the system (1), the treatment area (21) comprising at least part of the upper face (23) of the base element (13), and is further characterized in that, in step B), the measurement pattern (24) to be measured - comprises a light pattern (24a) which is projected at least partially into the roughened treatment area (21) onto the upper face (23) of the base element (13), and/or - comprises a base element (13) edge structure (24b) on the upper face (23) of the base element (13), the edge structure having a plurality of edges (29) and at least some of the edges (29) of the edge structure (24b) being situated in the roughened treatment area (21). The invention provides a method by means of which improved contrast during the preliminary measurements can be obtained in a simple manner.

IPC Classes  ?

  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • 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 12/17 - Auxiliary heating means to heat the build chamber or platform
  • B22F 12/30 - Platforms or substrates
  • 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

28.

METHOD FOR MEASURING A BUILD PLATFORM OF A GENERATIVE MANUFACTURING DEVICE, CONTROL DEVICE FOR CARRYING OUT SUCH A METHOD, GENERATIVE MANUFACTURING DEVICE HAVING SUCH A CONTROL DEVICE, METHOD FOR THE GENERATIVE MANUFACTURING OF A COMPONENT, AND COMPUTER PROGRAM PRODUCT

      
Application Number EP2023059205
Publication Number 2023/213497
Status In Force
Filing Date 2023-04-06
Publication Date 2023-11-09
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Blickle, Valentin
  • Peters, Julia
  • Waller, Jörg
  • Gronle, Marc

Abstract

The invention relates to a method for measuring a build platform (3) of a generative manufacturing device (1), comprising the following steps: - creating a first recording of the build platform (3) in a first state by means of a powder bed sensor (7) or by means of a sensor (19) for detecting remitted light (21) of an energy beam (11) in the generative manufacturing device (1); - detecting, in each case, a first marking position of at least two markings of the build platform (3) in the first recording; - comparing the first marking positions in the first state with allocated second marking positions of the same markings in a second state of the build platform (3) by means of a mathematical calculation rule, and - obtaining, from the comparison, a deviation of the first marking positions from the allocated second marking positions.

IPC Classes  ?

  • G05B 19/404 - Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia

29.

DEVICE AND METHOD FOR SEPARATING A MATERIAL

      
Application Number 18336031
Status Pending
Filing Date 2023-06-16
First Publication Date 2023-11-09
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Flamm, Daniel
  • Kleiner, Jonas
  • Kaiser, Myriam

Abstract

A method for separating a workpiece having a transparent material includes providing ultrashort laser pulses using an ultrashort pulse laser, introducing material modifications into the transparent material of the workpiece along a separation line, and separating the material of the workpiece along the separation line. The laser pulses form a laser beam that is incident onto the workpiece at a work angle. The material modifications are Type III modifications associated with a formation of cracks in the material of the workpiece. The material modifications penetrate two sides of the workpiece that are located in intersecting planes. Separating the material of the workpiece produces a chamfer and/or a bevel. A length of a hypotenuse of the chamfer and/or bevel is between 50 μm and 5000 μm.

IPC Classes  ?

  • B23K 26/40 - Removing material taking account of the properties of the material involved
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/38 - Removing material by boring or cutting

30.

METHOD FOR SEPARATING A WORKPIECE

      
Application Number EP2023061010
Publication Number 2023/209034
Status In Force
Filing Date 2023-04-26
Publication Date 2023-11-02
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Kaiser, Myriam
  • Flamm, Daniel
  • Kleiner, Jonas
  • Schmitt, Christian
  • Hess, Adam
  • Sander, Bernd Uwe

Abstract

The invention relates to a method for separating a workpiece (104) which has a transparent material (102). Multiple focal elements (120) are provided by means of an inlet laser beam (108), and the focal elements (120) are applied to the material (102). By applying the focal elements (120) to the material (102), material modifications (138) are produced in the material (102) along a specified machining line (128), and the material (102) is separated along the machining line (128) using an etching method with a wet-chemical solution, wherein the temperature of the wet-chemical solution during the etching method equals at least 100 °C and/or maximally 150 °C.

IPC Classes  ?

  • C03C 15/00 - Surface treatment of glass, not in the form of fibres or filaments, by etching
  • B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
  • C03C 23/00 - Other surface treatment of glass not in the form of fibres or filaments

31.

LASER SYSTEM FOR LASER CLADDING WITH A POWDER JET HAVING HARD-MATERIAL PARTICLES

      
Application Number EP2023061554
Publication Number 2023/209249
Status In Force
Filing Date 2023-05-02
Publication Date 2023-11-02
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Hesse, Tim
  • Sautter, Björn
  • Scholz, Andreas

Abstract

The present invention relates to a laser system for laser cladding, comprising: a laser source for producing a laser beam (30) having a wavelength in the range between 0.4 µm and 1.5 µm; and a jet nozzle for directing the laser beam (30) at a workpiece surface (12) and for directing a powder jet comprising a pulverulent material (20) at the laser beam (30) and at the workpiece surface (12); wherein the laser beam (30) exiting from the jet nozzle has a reduced intensity in a core region (314) in comparison with an edge region (312a, 312b, 312c), and wherein the pulverulent material (20) comprises hard-material particles. The invention also relates to a method for laser cladding and to a component which can be manufactured by means of the method.

IPC Classes  ?

  • B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
  • 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 26/323 - Bonding taking account of the properties of the material involved involving parts made of dissimilar metallic material
  • B23K 26/342 - Build-up welding
  • B23K 31/00 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups
  • B22F 10/25 - Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
  • 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 80/00 - Products made by additive manufacturing
  • C23C 24/10 - Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
  • F16D 65/02 - Braking members; Mounting thereof

32.

DEVICE AND METHOD FOR SEPARATING A MATERIAL

      
Application Number 18336045
Status Pending
Filing Date 2023-06-16
First Publication Date 2023-11-02
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Flamm, Daniel
  • Kleiner, Jonas
  • Kaiser, Myriam
  • Zimmermann, Felix

Abstract

A method for separating a workpiece having a transparent material includes providing ultrashort laser pulses using an ultrashort pulse laser, introducing material modifications into the transparent material of the workpiece along a separation line using the laser pulses, and separating the material of the workpiece along the separation line. The laser pulses form a laser beam that is incident onto the workpiece at a work angle. The material modifications are Type I and/or Type II modifications associated with a change in a refractive index of the material of the workpiece. The material modifications penetrate two sides of the workpiece that are located in intersecting planes. Separating the material of the workpiece produces a chamfer and/or a bevel. A length of a hypotenuse of the chamfer and/or bevel is between 50 μm and 500 μm.

IPC Classes  ?

  • B23K 26/40 - Removing material taking account of the properties of the material involved
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/53 - Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
  • B23K 26/38 - Removing material by boring or cutting

33.

OPTICAL ASSEMBLY FOR CONVERTING AN INPUT LASER BEAM INTO A LINEAR OUTPUT BEAM WITH INCREASED HOMOGENEITY IN THE INTENSITY CURVE

      
Application Number EP2023060060
Publication Number 2023/203046
Status In Force
Filing Date 2023-04-19
Publication Date 2023-10-26
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Irion, Cristoph
  • Rehm, Dennis

Abstract

The invention relates to an optical assembly (20) for converting an input laser beam (18) into a linear output beam (12) having an intensity distribution with increased homogeneity. The invention also relates to a laser system (10) for generating a linear output beam (12) having such an intensity distribution, said laser system comprising such an optical assembly (20), and to a method for controlling a displacement device (54) on one of two lens arrays (38, 40) in an optical assembly (20).

IPC Classes  ?

  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
  • 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
  • B23K 26/073 - Shaping the laser spot
  • G02B 27/48 - Laser speckle optics

34.

DEVICE FOR GENERATING A DEFINED LASER LINE ON A WORKING PLANE

      
Application Number EP2023058708
Publication Number 2023/194320
Status In Force
Filing Date 2023-04-03
Publication Date 2023-10-12
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Heimes, Andreas
  • Hellstern, Julian
  • Tillkorn, Christoph

Abstract

The invention relates to a device (10) for generating a defined laser line on a working plane (24), having multiple laser light sources (12a, 12b), each of which is designed to generate a laser beam bundle (16a, 16b, 16c) with a defined divergence. The laser beam bundles (16a, 16b, 16c ) define a beam direction (z) which intersects the working plane (30) and are designed to overlap in front of the working plane (30) at a first distance (A) thereto, and the laser beam bundles (16a, 16b, 16c) have a beam profile in the region of the working plane (30), said beam profile having a long axis (LA) with a long axis beam width and a short axis (SA) with a short axis beam width perpendicularly to the beam direction (z). The device (10) additionally has a first optical assembly (14) which is designed to generate a defined beam profile in the short axis (SA) on the working plane (30). The device (10) is characterized in that it additionally comprises a second optical assembly (18) which has multiple separate second sub-units (18a, 18b, 18c) which are designed to generate a beam profile with a homogenous angle in the long axis (LA) on the working plane (30).

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/073 - Shaping the laser spot

35.

METHOD FOR PRODUCING AT LEAST ONE OBJECT IN LAYERS, WITH STEP-BY-STEP UPDATING OF THE COORDINATE TRANSFORMATION OF SCANNERS

      
Application Number EP2023056342
Publication Number 2023/194041
Status In Force
Filing Date 2023-03-13
Publication Date 2023-10-12
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Gronle, Marc
  • Wagner, Joachim
  • Allenberg-Rabe, Matthias
  • Pfefferle, Oliver

Abstract

The invention relates to a method for producing at least one object (2) on a building platform (6) in layers by locally solidifying pulverulent material (3) in a layer (7), wherein: at least in a plurality of the layers, N high-energy beams (8a, 8b) are at least temporarily used simultaneously with N scanners, where N ≥ 2; each scanner is assigned a scanner coordinate system; a control device (10) for an exposure of a layer for each scanner - provides (102) exposure data of a machining pattern in a reference coordinate system, - converts (103) the exposure data in the reference coordinate system into exposure data in the scanner coordinate system by means of a programmed coordinate transformation (PKT) and - directs (104) the obtained exposure data in the scanner coordinate system to the associated scanner so that the scanner exposes (105) the machining pattern on the building platform in the layer; while producing the at least one object in layers, measurements are repeatedly taken, by means of each of which the current actual coordinate transformations (MTKT) of at least N-1 scanners are determined; between two successive determinations of the current actual coordinate transformations, M layers are produced, where M ≥ 2; and, while producing the at least one object, the programmed coordinate transformations for the at least N-1 scanners are updated taking into account the current actual coordinate transformations (205.1, 205.j, 205.A; 305.1, 305.j, 305.A). The invention is characterised in that a plurality of updates of the programmed coordinate transformations of the at least N-1 scanners are performed between two successive determinations (201, 206; 301, 306) of the current actual coordinate transformations. The invention provides a method which makes it possible to produce the at least one object on the building platform in layers so that the object is high-quality while minimising non-productive time.

IPC Classes  ?

  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/31 - Calibration of process steps or apparatus settings, e.g. before or during manufacturing
  • B22F 12/45 - Two or more
  • 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 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

36.

SUCTION DEVICE FOR SUCKING UP PROCESS GAS WITH A STATIONARY GAS-CONVEYING CHANNEL AND DEVICE FOR PRODUCING THREE-DIMENSIONAL OBJECTS COMPRISING SUCH A SUCTION DEVICE

      
Application Number EP2023056344
Publication Number 2023/194043
Status In Force
Filing Date 2023-03-13
Publication Date 2023-10-12
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor Schaede, Florian

Abstract

The invention relates to a suction device for sucking up process gas from a process chamber (16) of a device (11) for producing three-dimensional objects by selective solidification of a build-up material, applied in layers, by means of a beam (27) acting on the build-up material, comprising °a suction module (41) movable in translation; °a gas-conveying channel (74) arranged in a stationary manner and having a slot (72); °a connection module (70), which is connected to the suction module (41), is movable in the slot (72) of the gas-conveying channel (74), and fluidically connects the suction module (41) to the gas-conveying channel (74).

IPC Classes  ?

  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/322 - Process control of the atmosphere, e.g. composition or pressure in a building chamber of the gas flow, e.g. rate or direction
  • B22F 12/70 - Gas flow means
  • B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
  • 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

37.

LASER PROCESSING OF A PARTLY TRANSPARENT WORKPIECE USING A QUASI-NON-DIFFRACTIVE LASER BEAM

      
Application Number 18331971
Status Pending
Filing Date 2023-06-09
First Publication Date 2023-10-05
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Flamm, Daniel
  • Kleiner, Jonas

Abstract

A method for material processing of a workpiece includes radiating a pulsed raw laser beam into an optical beam shaping system in order to form a quasi-non-diffractive laser beam with a focal zone extending in a longitudinal direction for the material processing of the workpiece. The optical beam shaping system is configured to impose a phase onto a beam cross section of the raw laser beam for forming phase-imposed laser radiation. The method further includes focusing the phase-imposed laser radiation into the workpiece so that the quasi-non-diffractive laser beam is formed and the focal zone has an intensity distribution that is adjustable along the longitudinal direction. The phase imposed on the beam cross section of the raw laser beam is set so that the intensity distribution of the quasi-non-diffractive laser beam in the focal zone is at least approximately constant in the longitudinal direction.

IPC Classes  ?

  • 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
  • B23K 26/402 - Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators

38.

METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL OBJECTS BY SELECTIVELY SOLIDIFYING A BUILD MATERIAL APPLIED LAYER BY LAYER

      
Application Number 18311256
Status Pending
Filing Date 2023-05-03
First Publication Date 2023-10-05
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Schaede, Florian
  • Etzel, Kai
  • Dueformantel, Christian
  • Witz, Lukas
  • Wagner, Joachim
  • Burkhardt, Armin

Abstract

A method for producing a three-dimensional object by selectively solidifying a build material applied layer by layer includes, in at least one process chamber, applying the build material layer by layer to a build platform, generating at least one beam for solidifying the build material using a radiation source, feeding the at least one beam to the build material in the build platform using at least one beam guiding element, and generating a primary gas flow along the build platform using a process assistance device. The process assistance device includes a centre module and at least one outer module aligned with the centre module, so that a section over which primary gas flows is formed between the centre module and the at least one outer module. The centre module and/or the at least one outer module are triggered so as to be movable along the build platform.

IPC Classes  ?

39.

HIGH-ENERGY GLASS CUTTING

      
Application Number 18327899
Status Pending
Filing Date 2023-06-02
First Publication Date 2023-09-28
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Kleiner, Jonas
  • Flamm, Daniel
  • Hesse, Tim
  • Kumkar, Malte
  • Kaiser, Myriam

Abstract

A method for severing an at least partially transparent material includes focusing ultrashort laser pulses, as individual laser pulses and/or as pulse trains, in the material so that a resulting modification zone elongated in a beam propagation direction enters the material and penetrates at least one surface of the material. Each pulse train comprises multiple sub-laser pulses, The method further includes introducing a plurality of material modifications along a severing line into the material via the laser pulses, and severing the material along the severing line, A pulse energy of the individual laser pulses or a sum of pulse energies of the sub-laser pulses is in a range from 500 μJ to 50 mJ. A length of the modification zone in the beam propagation direction is greater than a thickness of the material.

IPC Classes  ?

  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • C03B 33/08 - Severing cooled glass by fusing

40.

DEVICE FOR GENERATING A DEFINED LASER ILLUMINATION ON A WORK PLANE

      
Application Number 18318753
Status Pending
Filing Date 2023-05-17
First Publication Date 2023-09-14
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Tillkorn, Christoph
  • Heimes, Andreas

Abstract

A device includes a laser light source configured to generate a raw laser beam, and an optical arrangement configured to shape the raw laser beam into an illumination beam. The optical arrangement includes a beam transformer with an exit aperture, a first group of optical elements and a second group of optical elements for beam shaping. The beam transformer is configured to expand the raw laser beam in the direction of a long axis. The first group of optical elements comprises a homogenizer configured to homogenize the expanded raw laser beam. The second group of optical elements comprises at least one lens configured to image the exit aperture of the beam transformer. The first group of optical elements generates an intermediate image. The device further includes an imaging optical unit configured to image the intermediate image into the work plane.

IPC Classes  ?

  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
  • G02B 17/00 - Systems with reflecting surfaces, with or without refracting elements
  • G02B 17/08 - Catadioptric systems

41.

DEVICE FOR GENERATING A DEFINED LASER LINE ON A WORKING PLANE

      
Application Number EP2023054703
Publication Number 2023/169840
Status In Force
Filing Date 2023-02-24
Publication Date 2023-09-14
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor Heimes, Andreas

Abstract

The invention relates to a device for generating a defined laser line (12) on a working plane (14), said device comprising a laser light source (22), which is designed to generate a laser raw beam (24), and an optical arrangement (26) which receives the laser raw beam (24) and converts it along an optical axis (46) to an illumination beam (28). The illumination beam (28) defines a beam direction (29) which intersects the working plane (14) and has, in the region of the working plane (14), a beam profile (18) which has, perpendicular to the beam direction (29), a long axis having a long-axis beam width and a short axis having a short-axis beam width. The beam profile (18) can be moved relative to the working plane (14) along a movement direction (20) in order to machine a workpiece (16) with the aid of the illumination beam (28). The beam profile (18) has a defined intensity profile over the short-axis beam width, said intensity profile having a flank (48) leading in the direction of movement (20), a flank (50) trailing in the direction of movement (20) and a plateau (52) lying between the leading flank (48) and the trailing flank (50). The plateau (52) in the region of the leading flank (48) has a different intensity level than in the region of the trailing flank (50). The optical arrangement (26) furthermore has a beam transformer (30) which is designed to divide the laser raw beam (24) into a plurality of beam segments (36a, 36b) which are arranged next to one another in the long axis. In addition, the optical arrangement (26) has an optical element (56; 58) which is designed to selectively influence selected beam segments (36a, 36b).

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/066 - Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for

42.

HOMOGENEOUS MOUNTING FOR LARGE OPTICAL ELEMENTS

      
Application Number EP2023054066
Publication Number 2023/165822
Status In Force
Filing Date 2023-02-17
Publication Date 2023-09-07
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Beck, Torsten
  • Thierfelder, Silke
  • Fischer, Michael
  • Heimes, Andreas
  • Zeller, Thomas

Abstract

A device (10) for mounting a large optical unit (50) comprises a carrier plate (12) and a rigid mounting face (14a) which is arranged on the carrier plate (12) and configured to mount a base surface (52) of the large optical unit (50) in a predetermined position and orientation. The rigid mounting face (14a) is also configured to mount the large optical unit (50) at a Bessel point (BP1) of the large optical unit (50). The device (10) also comprises an elastic mounting face (16a) which is arranged on the carrier plate (12) and configured to elastically mount the base surface (52) of the large optical unit (50).

IPC Classes  ?

  • G02B 7/00 - Mountings, adjusting means, or light-tight connections, for optical elements

43.

LINE OPTICAL SYSTEM

      
Application Number EP2023051523
Publication Number 2023/160920
Status In Force
Filing Date 2023-01-23
Publication Date 2023-08-31
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Heimes, Andreas
  • Irion, Christoph
  • Hellstern, Julian

Abstract

The present invention relates to a line optical system (10) for generating a defined laser line (24) on a working plane (26), said line optical system comprising: at least one laser light source (12) for generating at least one laser beam (20); an optical assembly (14) which is designed to generate an illumination beam (22) along a beam path from the at least one laser beam (20), the illumination beam (22) defining a beam direction which intersects the working plane (26), the illumination beam (22) forming the defined laser line (24) in the region of the working plane (26), the optical assembly (14) having, in the beam path, a focusing unit (18) having a focusing lens (28) for focusing the illumination beam (22), the focusing lens (28) being movable parallel to the beam direction; a camera system (36) which is designed to monitor the illumination beam (22) at a defined position downstream of the focusing lens (28), the illumination beam (22) having a focus state at the defined position; and a control device (44) which is designed to readjust a position of the focusing lens (28) parallel to the beam direction based on a change in focus state at the at least one defined position.

IPC Classes  ?

44.

LINE-GENERATING OPTICAL SYSTEM

      
Application Number EP2023052136
Publication Number 2023/160946
Status In Force
Filing Date 2023-01-30
Publication Date 2023-08-31
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Heimes, Andreas
  • Irion, Christoph
  • Hieronymus, Tim

Abstract

The invention relates to a line-generating optical system (10) for generating a defined laser line (24) on a working plane (26), comprising at least one laser light source (12) for generating at least one laser beam (20); an optical assembly (14) which is designed to generate an illumination beam (22) from the at least one laser beam (20) along a beam path, wherein the illumination beam (22) defines a beam direction which intersects the working plane (26), the illumination beam (22) forms the defined laser line (24) in the region of the working plane (26), the optical assembly (14) has a focusing unit (18) with a focusing lens (28) in the beam path for focusing the illumination beam (22), and the focusing lens (28) can move parallel to the beam direction; a camera system (36) which is designed to monitor the illumination beam (22) at at least three defined positions downstream of the focusing lens (28), said illumination beam (22) having a focus state at each of the at least three defined positions; and a controller (44) which is designed to determine the position of the focus of the focusing lens (28) on the basis of the focus states at the at least three defined positions and to control the position of the focusing lens (28) parallel to the beam direction such that the focus position is arranged on the working plane (26).

IPC Classes  ?

  • B23K 26/046 - Automatically focusing the laser beam
  • 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 26/352 - Working by laser beam, e.g. welding, cutting or boring for surface treatment
  • B23K 26/70 - Auxiliary operations or equipment
  • B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 101/36 - Electric or electronic devices
  • B23K 103/00 - Materials to be soldered, welded or cut

45.

METHOD FOR SEPARATING ULTRATHIN GLASS

      
Application Number 18181589
Status Pending
Filing Date 2023-03-10
First Publication Date 2023-08-31
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Kleiner, Jonas
  • Flamm, Daniel
  • Schaefer, Marcel
  • Kaiser, Myriam
  • Jenne, Michael

Abstract

A method for separating an ultrathin glass using ultrashort laser pulses of an ultrashort pulse laser includes focusing the ultrashort laser pulses into the ultrathin glass such that a resulting focal zone is elongated in a beam direction and extends over an entire thickness of the ultrathin glass. The ultrashort laser pulses have a non-radially symmetric beam cross section perpendicular to a beam propagation direction. The method further includes introducing material modifications into the ultrathin glass along a separating line using the ultrashort laser pulses focused into the ultrathin glass, and separating the ultrathin glass along the separating line.

IPC Classes  ?

  • C03B 33/02 - Cutting or splitting sheet glass; Apparatus or machines therefor
  • C03B 33/04 - Cutting or splitting in curves, especially for making spectacle lenses
  • B23K 26/53 - Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/073 - Shaping the laser spot
  • B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring

46.

ADDITIVE MANUFACTURING METHOD WITH REDUCTION OF SURFACE ROUGHNESS OF A SHAPED ARTICLE PRODUCED IN THE MANUFACTURING METHOD

      
Application Number EP2023052192
Publication Number 2023/160955
Status In Force
Filing Date 2023-01-30
Publication Date 2023-08-31
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Van Husen, Anne
  • Wagenblast, Philipp

Abstract

A manufacturing method for the layer-by-layer additive manufacturing of a shaped article (10I), wherein a further layer (29a) is repeatedly added to a previous layer arrangement in the direction of a layer sequence, and in each case: VII. A new layer (22a) of a powder (17) is applied to the previous layer arrangement (13); VIII. In a melting area (23a) predetermined for the further layer (29a) and having a contour (25), the powder (17) of the new layer (22a) and at least part of the topmost layer of the previous layer arrangement (13) are melted with a first high-energy beam (24), in particular a laser beam or electron beam, is characterised in that in at least some of the further layers (29a), adding to the further layer (29a) further comprises: IX. A machining part (46) of the contour (25) is determined for the contour (25), and after step II, a second high-energy beam (31a), in particular a laser beam or electron beam, is moved along a line of travel which runs parallel to the machining part (46), as a result of which the further layer (29a) and at least part of the topmost layer of the previous layer arrangement (13) are melted along the line of travel, wherein the second high-energy beam (31a) has a second melt depth (33a) that is greater than the first melt depth (EST) of the first high-energy beam. The invention allows the surface roughness of the side faces of the shaped article to be reduced.

IPC Classes  ?

  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/36 - Process control of energy beam parameters
  • B22F 10/364 - Process control of energy beam parameters for post-heating, e.g. remelting
  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • B22F 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B33Y 80/00 - Products made by additive manufacturing
  • C22C 1/04 - Making non-ferrous alloys by powder metallurgy

47.

LASER DEPOSITION WELDING PROCESS FOR PRODUCING A COATING LAYER ON A COMPONENT

      
Application Number EP2023053674
Publication Number 2023/161088
Status In Force
Filing Date 2023-02-14
Publication Date 2023-08-31
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Hesse, Tim
  • Speker, Nicolai
  • Sautter, Björn
  • Scholz, Andreas

Abstract

The invention relates to a laser deposition welding process for producing a coating layer (80) on a surface (74) of a component (70) by creating at least one coating track (86) with a predefined track width (B) on the surface (74) by applying an, in particular pulverulent, filler material (2) along a helix-shaped or spiral-shaped working trajectory (88), wherein the filler material (2) and the component (70) are heated along the working trajectory (88) by means of a laser beam (1) so that the at least one coating track (86) is formed when the filler material (2) impinges on the surface (74), wherein at least two, in particular at least three, turns (8) in the at least one coating track (86) at least partially overlap along a track width (B).

IPC Classes  ?

  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • 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 26/14 - 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
  • B23K 26/342 - Build-up welding

48.

METHOD FOR LASER WELDING TWO THIN WORKPIECES IN A REGION OF OVERLAP

      
Application Number 18302008
Status Pending
Filing Date 2023-04-18
First Publication Date 2023-08-17
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Hesse, Tim

Abstract

A method for laser welding two workpieces includes arranging a first workpiece of a thickness D1 and a second workpiece of a thickness D2 on top of one another so that the first workpiece and the second workpiece overlap in a region of overlap. Each of D1 and D2 is 400 μm or less. The method further includes melting, using a laser beam guided along a weld seam, a material of the first workpiece over an entirety of the thickness D1 and a material of the second workpiece over only a partial thickness TD of the thickness D2 in the region of overlap, from a side of the first workpiece. The laser beam generates a vapor capillary that extends to a capillary depth KT into the first workpiece or into the first workpiece and the second workpiece, where 0.33*EST≤KT≤0.67*EST, with EST being a weld depth EST=D1+TD.

IPC Classes  ?

  • B23K 26/244 - Overlap seam welding
  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head

49.

METHOD FOR LASER WELDING A BIPOLAR PLATE FOR A FUEL CELL, WITH POWER-DENSITY DISTRIBUTION VARYING CYCLICALLY OVER TIME IN THE REGION OF THE MOLTEN POOL

      
Application Number EP2023052521
Publication Number 2023/152015
Status In Force
Filing Date 2023-02-02
Publication Date 2023-08-17
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Speker, Nicolai
  • Hesse, Tim
  • Scheible, Philipp

Abstract

A method for laser welding a bipolar plate (1) for a fuel cell, wherein two plate parts (1a, 1b) are welded to one another along at least one weld seam (2, 2a, 2b, 2c), wherein the laser welding is performed with a laser beam (5), wherein the laser beam (5) has, in a plane (E) of a surface (4) of the two plate parts (1a, 1b), a basic movement component (GBK) with a rate of advancement VS in a welding direction (SR) along a welding curve (8) in relation to the plate parts (1a, 1b), and the welding curve (8) runs along the weld seam (2, 2a, 2b, 2c), wherein the laser beam (5) produces a molten pool (7) in the plate parts (1a, 1b), and the laser beam (5) brings about a power-density distribution (LDV) of laser radiation in the plane (E) of the surface (4) of the two plate parts (1a, 1b) in the region of the molten pool (7), and wherein the laser beam (5) comprises one or more part-beams (11a, 11b), is characterized in that the power-density distribution (LDV) in the plane (E) of the surface (4) of the two plate parts (1a, 1b) is varied cyclically over time in the region of the molten pool (7). The invention provides a method by which low-defect weld seams with a high level of fluid impermeability can be produced on a bipolar plate at a high welding speed.

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/244 - Overlap seam welding

50.

SUBSTRATE PLATE FOR AN INTERCHANGEABLE CONTAINER, INTERCHANGEABLE CONTAINER AND METHOD AND APPARATUS FOR UNPACKING A THREE-DIMENSIONAL OBJECT PRODUCED BY SELECTIVE SOLIDIFICATION OF A PULVERULENT BUILD MATERIAL ON A SUBSTRATE PLATE OR IN THE INTERCHANGEABLE CONTAINER

      
Application Number 18303590
Status Pending
Filing Date 2023-04-20
First Publication Date 2023-08-17
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Giek, Daniel
  • Laib, Wolfgang

Abstract

A substrate plate for an interchangeable container that can be inserted into an apparatus for layer-by-layer application and selective solidification of a pulverulent build material for producing a three-dimensional object is provided. The substrate plate includes a surface on which the three-dimensional object is built, and a connection interface situated opposite to the surface. A transmission element is capable of being connected to the connection interface. At least one actuator is capable of being connected in a force-fitting and/or form-fitting manner to the substrate plate or to the transmission element fastened to the substrate plate. The at least one actuator is capable of being excited to oscillate by a generator.

IPC Classes  ?

  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/68 - Cleaning or washing
  • 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 12/30 - Platforms or substrates

51.

CONTAINER ARRANGEMENT OF AN UNPACKING DEVICE FOR A MANUFACTURING DEVICE, UNPACKING DEVICE HAVING SUCH A CONTAINER ARRANGEMENT, AND MANUFACTURING DEVICE

      
Application Number 18304376
Status Pending
Filing Date 2023-04-21
First Publication Date 2023-08-17
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Giek, Daniel
  • Laib, Wolfgang
  • Ispikoudis, Christos
  • Geng, Manuel

Abstract

A container arrangement of an unpacking device for a manufacturing device for additive manufacturing of a three-dimensional component is provided. The container arrangement includes a construction container with a construction chamber, and a collecting container that is releasably connected to the construction container and has a collecting chamber. The construction container has a container cover that, in the closed state, seals off the construction chamber and an inert atmosphere located therein from the surroundings. A collecting-container-side part of an interior of the container arrangement is provided inside the container arrangement. The container arrangement further includes an opening device that can be used, with the collecting-container-side part of the interior of the container arrangement being filled with an inert atmosphere, to open the closed container cover of the construction container and thereby to connect the construction chamber of the construction container to the collecting chamber of the collecting container.

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 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • 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
  • B29C 64/255 - Enclosures for the building material, e.g. powder containers
  • B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas

52.

METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL OBJECTS BY SELECTIVELY SOLIDIFYING A BUILD MATERIAL APPLIED LAYER BY LAYER

      
Application Number 18308693
Status Pending
Filing Date 2023-04-28
First Publication Date 2023-08-17
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Schaede, Florian
  • Witz, Lukas
  • Etzel, Kai

Abstract

A method for producing a three-dimensional object includes applying a build material layer by layer to a build platform, generating at least one beam for solidifying the build material, feeding the at least one beam to the build material using at least one beam guiding element, and generating a primary gas flow along the build platform using a process assistance device. The process assistance device includes a centre module and at least one outer module aligned with the centre module, so that a section over which primary gas flows is formed between the centre module and the at least one outer module. The method further includes generating a secondary gas flow that is aligned onto and fed to the build platform using a feed device above the build platform, so that a section along which the secondary gas flows is created between the feed device and the process assistance device.

IPC Classes  ?

  • B29C 64/364 - Conditioning of environment
  • B29C 64/268 - Arrangements for irradiation using electron beams [EB]

53.

LASER DEPOSITION WELDING METHOD FOR PRODUCING COATING LAYERS ON OPPOSING SURFACES OF A COMPONENT

      
Application Number EP2023052520
Publication Number 2023/152014
Status In Force
Filing Date 2023-02-02
Publication Date 2023-08-17
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Hesse, Tim
  • Scholz, Andreas
  • Speker, Nicolai
  • Sautter, Björn

Abstract

The invention relates to a laser deposition welding method for producing coating layers (80) on opposing surfaces (74) of a component (70) in that on each surface (74), an additive material (2), in particular a pulverulent additive material, is directed onto the respective surface (74) along a processing trajectory, in particular a spiral-shaped processing trajectory, wherein the additive material (2) and the component (70) are heated along the processing trajectory by means of a laser beam (1) such that the additive material (2) connects to the component (70) upon striking the respective surface (74), and the coating layers (80) are at least temporarily simultaneously produced on the opposing surfaces (74).

IPC Classes  ?

  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • 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 26/14 - 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
  • B23K 26/342 - Build-up welding

54.

Method for separating a workpiece

      
Application Number 18181588
Grant Number 11780028
Status In Force
Filing Date 2023-03-10
First Publication Date 2023-08-03
Grant Date 2023-10-10
Owner TRUMPF LASER—UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Kleiner, Jonas
  • Flamm, Daniel
  • Rave, Henning

Abstract

A method for separating a workpiece along a separation line by using ultrashort laser pulses of a laser beam includes splitting the laser beam, using a beam splitter optical unit, into a plurality of partial laser beams. Each partial laser beam is focused by a focusing optical unit onto a surface and/or into a volume of the workpiece so that the partial laser beams are arranged next to one another and spaced apart from one another along the separation line. The method further includes implementing material ablation in the workpiece along the separation line by introducing the ultrashort laser pulses into the workpiece. The partial laser beams are repeatedly moved away from an initial position along the separation line by a deflection value and are subsequently moved back into the initial position. The deflection value is less than or equal to a distance between two adjacent partial laser beams.

IPC Classes  ?

  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • B23K 26/364 - Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing

55.

METHOD FOR LASER DRILLING A DRILLED HOLE INTO A WORKPIECE AT FIRST AND SECOND MEAN BEAM INTENSITIES, AND CORRESPONDING LASER DRILLING DEVICE

      
Application Number EP2023050511
Publication Number 2023/138961
Status In Force
Filing Date 2023-01-11
Publication Date 2023-07-27
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Speker, Nicolai
  • Hesse, Tim

Abstract

The invention relates to a method for laser drilling a drilled hole into a workpiece (10), wherein at least one laser beam (20) is used for the laser drilling, wherein a laser beam cross section (30) of the at least one laser beam (20) has a central area (31) with a first laser beam profile (32) having a first mean beam intensity and an outer edge area (33), surrounding the central area (31), with a second laser beam profile (34) having a second mean beam intensity, wherein the second mean beam intensity is greater than the first mean beam intensity.

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/073 - Shaping the laser spot
  • B23K 26/382 - Removing material by boring or cutting by boring

56.

METHOD FOR THE LASER PROCESSING OF A WORKPIECE

      
Application Number EP2023051198
Publication Number 2023/139151
Status In Force
Filing Date 2023-01-19
Publication Date 2023-07-27
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Sailer, Marc
  • Grossmann, Daniel
  • Flamm, Daniel
  • Kleiner, Jonas

Abstract

The invention relates to a method for the laser processing of a workpiece (102), which has a curved surface (104), in which method at least one focus element (122) is provided by means of an input laser beam (110), the surface (104) of the workpiece (102) is acted on by the at least one focus element (122) and the at least one focus element (122) is moved relative to the surface (104), wherein the at least one focus element (122) has an elongated shape parallel to a longitudinal central axis (145) of the at least one focus element (122), the longitudinal central axis (145) of the at least one focus element (122) is orientated transverse, and in particular perpendicular, to the surface (104) of the workpiece (102), and wherein a material (106) of the workpiece (102) is removed and/or modified on the surface (104) by means of the at least one focus element (122).

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/073 - Shaping the laser spot
  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • B23K 26/352 - Working by laser beam, e.g. welding, cutting or boring for surface treatment
  • B23K 26/364 - Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
  • B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
  • B21B 27/00 - Rolls; Lubricating, cooling or heating rolls while in use
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B41C 1/05 - Heat-generating engraving heads, e.g. laser beam, electron beam
  • B23K 101/06 - Tubes
  • B23K 101/08 - Tubes finned or ribbed
  • B23K 103/04 - Steel alloys
  • B23K 103/10 - Aluminium or alloys thereof

57.

DEVICE FOR GENERATING A LASER LINE ON A WORK PLANE

      
Application Number 18193737
Status Pending
Filing Date 2023-03-31
First Publication Date 2023-07-27
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Heimes, Andreas
  • Hellstern, Julian
  • Wimmer, Martin

Abstract

A device for generating a laser line on a work plane includes a first laser light source configured to generate a first raw laser beam, a second laser light source configured to generate a second raw laser beam, and an optical arrangement configured to reshape the first raw laser beam to form a first illumination beam with a first caustic and a first beam profile, and reshape the second raw laser beam to form a second illumination beam with a second caustic and a second beam profile. The first illumination beam and the second illumination beam are directed with overlap on the work plane and define a joint illumination direction. The first beam profile and the second beam profile jointly form the laser line on the work plane. The optical arrangement is configured to position the first caustic and the second caustic offset from one another in the illumination direction.

IPC Classes  ?

  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
  • G02B 19/00 - Condensers

58.

PLANNING DEVICE AND METHOD FOR PLANNING A LOCALLY SELECTIVE IRRADIATION OF A WORK REGION USING AN ENERGY BEAM, COMPUTER PROGRAM PRODUCT FOR CARRYING OUT SUCH A METHOD, MANUFACTURING DEVICE HAVING SUCH A PLANNING DEVICE, AND METHOD FOR THE ADDITIVE MANUFACTURE OF A COMPONENT FROM A POWDER MATERIAL

      
Application Number 18295281
Status Pending
Filing Date 2023-04-04
First Publication Date 2023-07-27
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Leuck, Sarah
  • Meiners, Wilhelm

Abstract

A planning device for planning locally selective irradiation of a work region using an energy beam in order to produce a component from a powder material arranged in the work region is provided. The planning device is configured to obtain a plurality of irradiation vectors for irradiating a powder material layer arranged in the work region with the energy beam. The planning device is further configured to determine a vector alignment in a coordinate system on the work region for at least one irradiation vector of the plurality of irradiation vectors, and to specify, for the at least one irradiation vector, a beam alignment for a non-circular beam shape of the energy beam on the work region relative to the vector alignment of the at least one irradiation vector.

IPC Classes  ?

  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • 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
  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B22F 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
  • B22F 12/45 - Two or more
  • B22F 12/49 - Scanners
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B23K 26/342 - Build-up welding

59.

METHOD FOR THE LASER PROCESSING OF A WORKPIECE

      
Application Number EP2022084935
Publication Number 2023/138833
Status In Force
Filing Date 2022-12-08
Publication Date 2023-07-27
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Sailer, Marc
  • Flamm, Daniel
  • Grossmann, Daniel
  • Kleiner, Jonas

Abstract

The present invention relates to a method for the laser processing of a workpiece (102) which has a curved surface (104), in which a plurality of focus elements (122) spaced apart from one another are provided by means of an input laser beam (110), the surface (104) of the workpiece (102) is acted on by the focus elements (122), and the focus elements (122) are moved relative to the surface (104), wherein at least a subset of the focus elements (122) is arranged on the surface (104) in a manner spaced apart in a circumferential direction (140), along which the surface (140) is curved, and wherein a material (106) of the workpiece (102) is removed and/or modified at the surface (104) by means of the focus elements (122).

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/352 - Working by laser beam, e.g. welding, cutting or boring for surface treatment
  • B23K 26/36 - Removing material
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing

60.

METHOD FOR DETERMINING A GEOMETRIC RESULT VALUE AND/OR A QUALITY CHARACTERISTIC OF A WELD ON A WORKPIECE, AND A CORRESPONDING DEVICE

      
Application Number EP2023050510
Publication Number 2023/138960
Status In Force
Filing Date 2023-01-11
Publication Date 2023-07-27
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Haug, Patrick
  • Hesse, Tim
  • Speker, Nicolai
  • Scheible, Philipp

Abstract

The invention relates a method for determining at least one geometric result value and/or at least one quality characteristic of a weld (3) on at least one workpiece (9), wherein the method comprises the following steps: a) scanning the weld (3) by means of a measuring beam (2) during laser-beam welding of the weld (3) for ascertaining data points, wherein the measuring beam (2) is moved along at least one measuring path on the weld (3) and the ascertained data points indicate a height and/or depth of the weld (3) with respect to a workpiece surface (10) of the at least one workpiece (9), and b) determining the at least one geometric result value and/or the at least one quality characteristic by evaluating the previously ascertained data points.

IPC Classes  ?

  • B23K 31/12 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to investigating the properties, e.g. the weldability, of materials
  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/244 - Overlap seam welding
  • B23K 26/26 - Seam welding of rectilinear seams

61.

METHOD FOR LASER WELDING A FLOW FIELD PLATE OF A FUEL CELL, HAVING A WELD POOL PRODUCED USING A PLURALITY OF LASER SPOTS

      
Application Number EP2022085024
Publication Number 2023/131468
Status In Force
Filing Date 2022-12-08
Publication Date 2023-07-13
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Speker, Nicolai
  • Hesse, Tim
  • Scheible, Philipp

Abstract

The invention relates to a method for laser welding a flow field plate (1) for a fuel cell, two plate parts (1a, 1b) being welded to one another along at least one weld seam (2, 2a, 2b, 2c). According to the invention, the laser welding is carried out along the at least one weld seam (2, 2a, 2b, 2c) using a laser beam ensemble (34) comprising at least three individual beams (33), the individual beams (33) each producing a laser spot (5a-5e, 5a'-5c') on a surface (4) of the plate parts (1a, 1b), and in that the at least three individual beams (33) of the laser beam ensemble (34) produce a common weld pool (9) in the plate parts (1a, 1b). The invention provides a method which can achieve good fluid-tightness of weld seams of a flow field plate with high reliability.

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing

62.

METHOD FOR LASER-BEAM WELDING MULTIPLE COMPONENTS AT DIFFERENT PROCESSING LOCATIONS OF A COMPONENT, AND LASER-WELDING DEVICE

      
Application Number EP2022087076
Publication Number 2023/131522
Status In Force
Filing Date 2022-12-20
Publication Date 2023-07-13
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Dubitzky, Wilrid
  • Notheis, Thomas
  • Schmitt, Klemens

Abstract

The invention relates to a method for laser-beam welding multiple components (2, 3) at different processing locations of a component (1) by means of a laser-welding device (100), wherein the method comprises the following steps: (a) measuring a processing location of the multiple processing locations by means of a measuring beam (4) and/or by means of a sensor system, and (b) laser-beam welding a previously measured processing location of the multiple processing locations by means of a processing beam (5), wherein steps (a) and (b) are performed in parallel.

IPC Classes  ?

  • B23K 26/22 - Spot welding
  • H02K 15/00 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
  • B23K 101/38 - Conductors

63.

MULTI-STAGE LASER STRIPPING OF A ROD-SHAPED CONDUCTOR

      
Application Number 18187695
Status Pending
Filing Date 2023-03-22
First Publication Date 2023-07-13
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Neugebauer, Christoph
  • Hesse, Tim

Abstract

A method for stripping a rod-shaped conductor using laser radiation is provided. The rod-shaped conductor includes an electrically conductive core and a coating that is at least partially transparent to the laser radiation. The method includes traversing the conductor for a first time with at least one laser beam to at least partially reduce transparency of the coating, and traversing the conductor for a second time with the at least one laser beam to at least partially reduce adhesion of the coating.

IPC Classes  ?

  • B23K 26/38 - Removing material by boring or cutting
  • B23K 26/402 - Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators

64.

SCANNER WELDING APPARATUS AND METHOD FOR SCANNER WELDING AT LEAST TWO WORKPIECES

      
Application Number EP2022085022
Publication Number 2023/131466
Status In Force
Filing Date 2022-12-08
Publication Date 2023-07-13
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Speker, Nicolai
  • Hesse, Tim
  • Scheible, Philipp

Abstract

The invention relates to a scanner welding apparatus (100) for scanner welding at least two workpieces (7), wherein: the scanner welding apparatus (100) comprises a laser beam device (10) for emitting a laser beam (1) and scanner optics (20) for orienting the emitted laser beam (1) onto at least one machining surface (8) of at least one of the at least two workpieces (7); the scanner optics (20) comprise a collimation lens (21) and at least one movable mirror (22); and, between the laser beam device (10) and the collimation lens (21), a numerical aperture NA can be determined from the refractive index n of a medium between the laser beam device (10) and the collimation lens (21) and the aperture angle α of the laser beam (1) between the laser beam device (10) and the collimation lens (21) according to the formula NA = n x sin(α/2), wherein the scanner welding apparatus (100) is designed such that NA > 0.08 applies to the numerical aperture.

IPC Classes  ?

  • 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
  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head

65.

METHOD FOR JOINING TWO COMPONENTS OF A BATTERY BY MEANS OF SCANNER WELDING

      
Application Number EP2022085023
Publication Number 2023/131467
Status In Force
Filing Date 2022-12-08
Publication Date 2023-07-13
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Hesse, Tim
  • Speker, Nicolai
  • Haug, Patrick
  • Scheible, Philipp

Abstract

The invention relates to a method for joining two components (41, 42) of a battery (40), wherein the components (41, 42) are welded to one another by scanner welding by means of a welding device (100), wherein, during the scanner welding, a measuring beam (3) of an OCT sensor system is optically guided by means of a processing lens (32) of the welding device (100) coaxially in relation to a processing beam (2) of the welding device (100), and wherein the measuring beam (3) and the processing beam (2) are guided at a substantially matching angle of incidence (α) in relation to at least one processing surface of the two components (41, 42).

IPC Classes  ?

  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head

66.

METHOD FOR MACHINING A MATERIAL

      
Application Number 18174689
Status Pending
Filing Date 2023-02-27
First Publication Date 2023-07-06
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Grossmann, Daniel
  • Sailer, Marc
  • Kleiner, Jonas

Abstract

A method for machining a material using a pulsed laser includes introducing a sequence of laser pulses into the material for machining the material, and synchronizing a start of each sequence with a fundamental frequency of the laser. The sequence of laser pulses comprises at least two different sequence elements that are offset from one another in space and time. Each sequence element comprises an individual laser pulse, a specific succession of individual laser pulses, or a burst of laser pulses. Specific sequence element properties are impressed on each sequence element. The sequence element properties comprise a position of the laser focus of a respective sequence element. The position of the laser focus of each sequence element of the sequence is adapted for each sequence element.

IPC Classes  ?

  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/36 - Removing material

67.

METHOD FOR SEPARATING A WORKPIECE

      
Application Number 18181579
Status Pending
Filing Date 2023-03-10
First Publication Date 2023-07-06
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Kleiner, Jonas
  • Flamm, Daniel
  • Rave, Henning
  • Sailer, Marc

Abstract

A method for separating a workpiece along a separation line by using laser pulses of a laser beam includes splitting the laser beam into a plurality of partial laser beams using a beam splitter optical unit, focusing the plurality of partial laser beams onto a surface of the workpiece and/or into a volume of the workpiece using a focusing optical unit, so that the plurality of partial laser beams are arranged next to one another and spaced apart from one another along the separation line, and ablating material of the workpiece along the separation line by introducing the laser pulses of the plurality of partial laser beams into the workpiece. The laser power per partial laser beam is adjusted depending on an ablation depth obtained in the workpiece.

IPC Classes  ?

  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/36 - Removing material

68.

DEVICE FOR GENERATING A DEFINED LASER LINE ON A WORKING PLANE

      
Application Number EP2022083135
Publication Number 2023/117293
Status In Force
Filing Date 2022-11-24
Publication Date 2023-06-29
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Heimes, Andreas
  • Stolzenburg, Christian

Abstract

The invention relates to a device for generating a defined laser line (12) on a working plane (14), said device comprising at least one laser light source (20) which has a pumped solid-state laser (28) and generates at least one pulsed UV laser raw beam (I). The device further comprises an optical arrangement (18) having a number of optical elements (42, 44, 46, 48, 50, 52) which define a beam path for the at least one pulsed UV laser raw beam (I). The optical arrangement (18) is designed to form a pulsed illumination beam (16) at a defined pulse rate from the at least one pulsed UV laser raw beam (I). The pulsed illumination beam (16) defines a beam direction (52) which intersects the working plane (14). The pulsed illumination beam (16) has a beam profile (V; VI) in the area of the working plane (14), said beam profile having, perpendicular to the beam direction, a long axis with a long axis beam width (LA) and a short axis with a short axis beam width (KA). According to one aspect of the invention, the optical arrangement (18) is designed to generate the beam profile (V; VI) with a short axis beam width (KA) that is less than 250 μm, and the at least one laser light source (20) and the optical arrangement (18) are jointly designed to generate the pulsed illumination beam (16) in the area of the working plane (14) at a defined pulse rate that is greater than 1 kHz.

IPC Classes  ?

  • H01S 3/00 - Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
  • H01S 3/10 - Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • H01S 3/23 - Arrangement of two or more lasers not provided for in groups , e.g. tandem arrangement of separate active media

69.

MANUFACTURING DEVICE, METHOD AND COMPUTER PROGRAM PRODUCT FOR THE ADDITIVE MANUFACTURE OF COMPONENTS FROM A POWDER MATERIAL

      
Application Number 18169914
Status Pending
Filing Date 2023-02-16
First Publication Date 2023-06-22
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Gutmann, Bernhard
  • Staiger, Michael
  • Leuck, Sarah
  • Findeisen, Stefan

Abstract

A manufacturing device for additive manufacture of components includes a beam generation device configured to generate energy beams, a scanner device configured to locally and selectively irradiate a working region with the energy beams, a protective gas device configured to generate a protective gas flow over the working region, and a control device configured to drive the scanner device. The control device is configured to define a first irradiation region along which a first irradiation section is displaced from a first starting position to a first end position, to define a second irradiation region along which a second irradiation section is displaced from a second starting position to a second end position, and to begin irradiation of the second irradiation region when the first irradiation section and the second starting position are not arranged within an interaction zone defined by a protective gas flow direction relative to one another.

IPC Classes  ?

  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B22F 12/49 - Scanners
  • B22F 12/70 - Gas flow means
  • 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 12/45 - Two or more
  • B33Y 10/00 - Processes of additive manufacturing
  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/31 - Calibration of process steps or apparatus settings, e.g. before or during manufacturing

70.

PLANNING DEVICE, MANUFACTURING DEVICE, METHOD AND COMPUTER PROGRAM PRODUCT FOR THE ADDITIVE MANUFACTURE OF COMPONENTS FROM A POWDER MATERIAL

      
Application Number 18170568
Status Pending
Filing Date 2023-02-17
First Publication Date 2023-06-22
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Gutmann, Bernhard
  • Meiners, Wilhelm
  • Leuck, Sarah
  • Findeisen, Stefan

Abstract

A method for planning locally selective irradiation of a working region with an energy beam in order to produce a component from a powder material arranged in the working region includes defining an origin on a component contour of a component layer to be generated on a powder material layer in the working region, and overlaying the component contour, based on the origin, with an arrangement of irradiation regions to be irradiated with the energy beam. Each irradiation region has a dimension that is predetermined independently of the component contour and identical for all irradiation regions.

IPC Classes  ?

  • B22F 12/90 - Means for process control, e.g. cameras or sensors
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B22F 12/49 - Scanners
  • B22F 10/36 - Process control of energy beam parameters

71.

BEAM TRANSFORMER

      
Application Number 18173805
Status Pending
Filing Date 2023-02-24
First Publication Date 2023-06-22
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Zeller, Thomas
  • Heimes, Andreas
  • Beck, Torsten
  • Schwartz, Mario
  • Schuller, Hans Georg

Abstract

A beam transformer for transforming an input laser beam into a transformed laser beam for use in laser systems for line illumination of an object includes a transparent planar optical element that has a front surface and a back surface, which extend substantially parallel to one another. The optical element has an entrance area and an exit area, and a plurality of reflective surfaces for beam deflection. The beam transformer further includes a cooling device provided at least on the front surface or the back surface of the optical element.

IPC Classes  ?

  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
  • G02B 7/18 - Mountings, adjusting means, or light-tight connections, for optical elements for mirrors

72.

METHOD FOR WELDING ZINC-COATED STEEL SHEETS USING A LASER BEAM

      
Application Number EP2022084803
Publication Number 2023/110583
Status In Force
Filing Date 2022-12-07
Publication Date 2023-06-22
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Stempky, Travis
  • Jiang, Chonghua

Abstract

The invention relates to a method for welding a first welding surface (12a) of a first metal sheet (10a) to a second welding surface (12b) of a second metal sheet (10b), the first welding surface (12a) having a zinc coating (16a). The welding surfaces (12a, 12b) face one another and are spaced from one another. A laser beam (18) is guided along the first welding surface (12a) and the second welding surface (12b) in a wobbling movement to weld the welding surfaces (12a, 12b). The wobbling movement has one direction component in a forward direction (FD) of the laser beam (18) and one direction component perpendicular to the forward direction (FD). The path (24) of the laser beam (18) on the welding surfaces (12a, 12b) has a pattern which repeats with a period (30) in the forward direction (FD). The width of the path (24) perpendicular to the forward direction (FD) is greater than the period (30) of the path (24) in the forward direction (FD). The laser beam (18) is divided in the radial direction by its beam axis (BA) into an inner profile (20) and an outer profile (22), the intensities of which are different, and the outer profile (22) surrounds the inner profile (20).

IPC Classes  ?

  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • B23K 26/244 - Overlap seam welding
  • B23K 26/322 - Bonding taking account of the properties of the material involved involving coated metal parts
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/242 - Fillet welding, i.e. involving a weld of substantially triangular cross section joining two parts
  • B23K 103/04 - Steel alloys
  • B23K 101/00 - Articles made by soldering, welding or cutting
  • B23K 101/34 - Coated articles
  • B23K 101/18 - Sheet panels
  • B23K 26/073 - Shaping the laser spot

73.

METHOD FOR WELDING METAL SHEETS HAVING COATINGS WHICH COMPRISE AN ALLOY OF ALUMINIUM AND SILICON

      
Application Number EP2022084804
Publication Number 2023/110584
Status In Force
Filing Date 2022-12-07
Publication Date 2023-06-22
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Hesse, Tim
  • Speker, Nicolai

Abstract

The invention relates to a method for welding a first welding surface (12a) of a first metal sheet (10a) to a second welding surface (12b) of a second metal sheet (10b), wherein the first welding surface (12a) has a coating (16a) which comprises an alloy of aluminium and silicon. The welding surfaces (12a, 12b) are arranged so as to face one another and be spaced apart from one another. A laser beam (18) is guided along the first welding surface (12a) and the second welding surface (12b) in order to weld the welding surfaces (12a, 12b) in a wobbling movement. The wobbling movement has a directional component in a feed direction (FD) of the laser beam (18) and a directional component perpendicular to the feed direction (FD). The path (24) of the laser beam (18) on the welding surfaces (12a, 12b) has a pattern which repeats in the feed direction (FD) with a period (30). The width of the path (24) perpendicular to the feed direction (FD) is greater than the period (30) of the path (24) in the feed direction (FD). The laser beam (18) is divided into an inner profile (20) and an outer profile (22), the intensities of which are different, by its beam axis (BA) in the radial direction, wherein the outer profile (22) surrounds the inner profile (20).

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/08 - Devices involving relative movement between laser beam and workpiece
  • B23K 26/242 - Fillet welding, i.e. involving a weld of substantially triangular cross section joining two parts
  • B23K 26/244 - Overlap seam welding
  • B23K 26/322 - Bonding taking account of the properties of the material involved involving coated metal parts
  • B23K 101/00 - Articles made by soldering, welding or cutting
  • B23K 101/18 - Sheet panels
  • B23K 101/34 - Coated articles

74.

BUS BAR CONNECTION HAVING IMPROVED ELECTRICAL CONDUCTIVITY

      
Application Number EP2022086697
Publication Number 2023/111354
Status In Force
Filing Date 2022-12-19
Publication Date 2023-06-22
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Neugebauer, Christoph

Abstract

The invention relates to an assembly (10) for electrically connecting at least two electrically conductive conductor elements (12), the assembly comprising: a first electrically conductive conductor element (12-1) having a first contact face (123-1), a second electrically conductive conductor element (12-2) having a second contact face (123-2), wherein the conductor elements (12-1, 12-2) are arranged in relation to one another in such a way that they are in contact with one another via the relevant contact face (123-1, 123-2), wherein the first conductor element (12-1) and/or the second conductor element (12-2) have/has a modified surface structure in the region of the relevant contact face (123-1, 123-2). The invention also relates to a conductor element (12) for use in the assembly (10), and to a method and a laser processing system (20) for producing a structured surface on a conductor element (12).

IPC Classes  ?

  • H01R 4/30 - Clamped connections; Spring connections using a screw or nut clamping member
  • H01R 4/34 - Conductive members located under head of screw
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/352 - Working by laser beam, e.g. welding, cutting or boring for surface treatment
  • H01R 4/26 - Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact

75.

PROCESSING OPTICAL UNIT, LASER PROCESSING APPARATUS AND METHOD FOR LASER PROCESSING

      
Application Number 18067746
Status Pending
Filing Date 2022-12-19
First Publication Date 2023-06-15
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Flamm, Daniel
  • Hellstern, Julian
  • Kleiner, Jonas
  • Kumkar, Malte
  • Schaefer, Marcel

Abstract

A processing optical unit for workpiece processing includes a polarizer arrangement comprising a birefringent polarizer element for splitting at least one input laser beam into at least two partial beams each partial beam having one of two different polarization states, and a focusing optical unit arranged downstream of the polarizer arrangement in the beam path and configured to focus the partial beams onto at least two focus zones. The polarizer arrangement has a further optical element arranged downstream of the birefringent polarizer element in the beam path and configured to change an angle and/or a distance of at least one of the partial beams relative to an optical axis of the processing optical unit.

IPC Classes  ?

  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • 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

76.

METHOD FOR THE DISPLACEMENT OF A CONTINUOUS ENERGY BEAM, AND MANUFACTURING DEVICE

      
Application Number 18154050
Status Pending
Filing Date 2023-01-13
First Publication Date 2023-06-08
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Meiners, Wilhelm
  • Wagenblast, Philipp
  • Gruenewald, Jonas
  • Blickle, Valentin
  • Allenberg-Rabe, Matthias

Abstract

A method for displacing a continuous energy beam includes radiating the continuous energy beam onto a powder material and displacing the energy beam by overlaying an optical deflection of the energy beam using a deflection device and a mechanical deflection of the energy beam using a scanner device. The mechanical deflection is configured to position the energy beam at a plurality of irradiation positions and the optical deflection is configured to deflect the energy beam around each of the irradiation positions within a beam region onto at least one beam position of the sequence of beam positions. The optical deflection and the mechanical deflection are changed simultaneously or successively in order to scan the sequence of beam positions using the energy beam.

IPC Classes  ?

  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/342 - Build-up welding
  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy

77.

DEVICE AND METHOD FOR PROCESSING A WORKPIECE

      
Application Number EP2022082501
Publication Number 2023/099244
Status In Force
Filing Date 2022-11-18
Publication Date 2023-06-08
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Flamm, Daniel
  • Zimmermann, Felix
  • Grossmann, Daniel

Abstract

The present invention relates to a device and a method for processing a workpiece (5) by means of a laser beam (10) of a laser (1), comprising a waveplate (2) and a focusing device (4), wherein the waveplate (2) is designed to impose a first location-dependent phase shift on the laser beam (10) with a first input polarisation and to impose a second location-dependent phase shift on the laser beam (10) with a second input polarisation, the focusing device (4) is designed to focus the laser beam (10) into at least one focus zone (120, 122), wherein the beam shape of the laser beam (10) in the focus zone (120, 122) is determined by the location-dependent phase shift, and at least one focus zone (120, 122) at least partially overlaps with the workpiece (5) and the workpiece (5) is exposed to laser radiation in the at least one focus zone (120, 122) and is thereby processed.

IPC Classes  ?

  • B23K 26/53 - Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
  • B23K 26/402 - Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators
  • 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
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • G02B 5/30 - Polarising elements
  • G02B 27/09 - Beam shaping, e.g. changing the cross-sectioned area, not otherwise provided for
  • B23K 26/066 - Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
  • B23K 103/00 - Materials to be soldered, welded or cut

78.

DEVICE AND METHOD FOR JOINING AT LEAST TWO JOINING PARTNERS

      
Application Number 18102111
Status Pending
Filing Date 2023-01-27
First Publication Date 2023-06-01
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor Zimmermann, Felix

Abstract

A method for joining two joining partners includes applying a coating to at least one of the two joining partners so as to be arranged between the two joining partners before joining and joining the at least two joining partners to one another using ultrashort laser pulses of a laser beam of an ultrashort pulse laser. At least one joining partner is substantially transparent to the ultrashort laser pulses of the ultrashort pulse laser, and the coating comprises physical properties similar to at least one joining partner and/or a chemical constituent similar to at least one joining partner.

IPC Classes  ?

  • B23K 26/57 - Working by transmitting the laser beam through or within the workpiece the laser beam entering a face of the workpiece from which it is transmitted through the workpiece material to work on a different workpiece face, e.g. for effecting removal, fusion splicing, modifying or reforming
  • B23K 26/244 - Overlap seam welding
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/324 - Bonding taking account of the properties of the material involved involving non-metallic parts

79.

LASER PROCESSING OF A WORKPIECE HAVING A CURVED SURFACE

      
Application Number 18163298
Status Pending
Filing Date 2023-02-02
First Publication Date 2023-06-01
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Flamm, Daniel
  • Kleiner, Jonas

Abstract

A method for processing a workpiece using a pulsed laser beam includes beam shaping of the laser beam to form an elongated focus zone in the material of the workpiece. The beam shaping is carried out by using an arrangement of diffractive, reflective and/or refractive optical assemblies. The beam shaping includes focus-forming beam shaping to cause beam portions to enter at an entry angle to a beam axis of the laser beam for forming the elongated focus zone along the beam axis in the workpiece by way of interference, and phase-correcting beam shaping to counteract any influence of the interference by entrance of the laser beam into the workpiece. The method further includes setting beam parameters of the laser beam so that the material of the workpiece is modified in the elongated focus zone.

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/046 - Automatically focusing the laser beam
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses

80.

METHOD AND DEVICE FOR LASER CLADDING

      
Application Number EP2022081490
Publication Number 2023/088779
Status In Force
Filing Date 2022-11-10
Publication Date 2023-05-25
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Sautter, Björn
  • Speker, Nicolai
  • Zamorano Reichold, Alejandro
  • Scholz, Andreas
  • Hesse, Tim

Abstract

The invention relates to a method for laser cladding, in which method pulverous material (20) and a laser beam (30) are directed, at an angle to each other, toward a workpiece surface (12) of a workpiece (10) such that the pulverous material (20) is at least partially heated in a zone of interaction (40) with the laser beam (30) above the workpiece surface (12) and is welded onto the workpiece surface (12) along a predefined contour, wherein the laser beam (30) has a wavelength in the range between 0.4 µm and 1.1 µm, and wherein, within the zone of interaction (40), the laser beam (30) has an intensity in its edge region (312a, 312b, 312c) which is greater than an intensity in the core region (314) of the laser beam (30), the greater intensity of the edge region (312a, 312b, 312c) being applied to the pulverous material (20) as the pulverous material enters the zone of interaction (40). The invention also relates to a device for carrying out the method.

IPC Classes  ?

  • B23K 26/073 - Shaping the laser spot
  • 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 26/34 - Laser welding for purposes other than joining
  • B23K 26/342 - Build-up welding

81.

METHOD FOR THE ABRUPT DISPLACEMENT OF A CONTINUOUS ENERGY BEAM, AND MANUFACTURING DEVICE

      
Application Number 18152173
Status Pending
Filing Date 2023-01-10
First Publication Date 2023-05-25
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Meiners, Wilhelm
  • Wagenblast, Philipp
  • Blickle, Valentin
  • Allenberg-Rabe, Matthias
  • Gruenewald, Jonas

Abstract

A method for displacing a continuous energy beam includes emitting a continuous energy beam in a direction of a powder material and displacing the energy beam by overlaying an optical deflection of the energy beam using of a deflection device and a mechanical deflection of the energy beam using of a scanner device. The mechanical deflection is configured to position the energy beam at a plurality of irradiation positions, and the optical deflection is configured to deflect the energy beam around each of the irradiation positions within a beam region of the deflection device onto at least one beam position in a sequence of beam positions. The optical deflection and the mechanical deflection are controlled such that the energy beam successively scans subsequences with an abrupt change of the optical deflection such that two spatially separated subsequences are successively adopted by the energy beam.

IPC Classes  ?

  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • B22F 12/49 - Scanners
  • 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

82.

METHOD FOR THE LASER PROCESSING OF A WORKPIECE

      
Application Number EP2022082020
Publication Number 2023/088912
Status In Force
Filing Date 2022-11-15
Publication Date 2023-05-25
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Flamm, Daniel
  • Kaiser, Myriam
  • Kleiner, Jonas

Abstract

The invention relates to a method for the laser processing of a workpiece (104) which has a transparent material (102). In the method, multiple focal elements (120, 120') are provided by means of an input laser beam (108), and the focal elements (120, 120') act on the material (102), wherein material modifications (138) are produced in the material (102) along a specified processing line (128) as a result of the focal elements (120) acting on the material (102), which can be detached at said processing line by means of an etching process using at least one wet-chemical solution, and as a result of the focal elements (120') acting on the material (102), at least one separate etching entrance (144) is formed in the material (102) in order to supply the at least one wet-chemical solution to the processing line (128) from an outer face (132, 134) of the workpiece (104).

IPC Classes  ?

  • C03C 23/00 - Other surface treatment of glass not in the form of fibres or filaments
  • C03C 15/00 - Surface treatment of glass, not in the form of fibres or filaments, by etching
  • C03B 33/02 - Cutting or splitting sheet glass; Apparatus or machines therefor
  • B23K 26/53 - Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
  • B23K 26/57 - Working by transmitting the laser beam through or within the workpiece the laser beam entering a face of the workpiece from which it is transmitted through the workpiece material to work on a different workpiece face, e.g. for effecting removal, fusion splicing, modifying or reforming
  • B23K 26/359 - Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line

83.

METHOD AND DEVICE FOR ADDITIVELY MANUFACTURING AT LEAST ONE COMPONENT THAT CAN EASILY BE REMOVED FROM A CARRIER

      
Application Number EP2022080648
Publication Number 2023/083682
Status In Force
Filing Date 2022-11-03
Publication Date 2023-05-19
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Gouddi, Youssef
  • Esin, Alex

Abstract

The invention relates to a method for producing a first component (12) from metal powder by means of additive laser manufacturing. The first component (12) is connected to a carrier (14) heated to greater than 400°C via a first support structure (16). The first support structure (16) can have a plurality of first support struts, which are delicately designed so that the first component (12) can be easily separated from the first support structure (16). A bearing structure (28) can also be attached to the carrier (14), wherein a second component (22) is supported on the bearing structure (28) via a second support structure (26). A further bearing structure (32) can be formed on the bearing structure (28), which supports a further component (24) via a further support structure (30). The invention also relates to a manufacturing device (10), in particular for carrying out the method.

IPC Classes  ?

  • B22F 10/47 - Structures for supporting workpieces or articles during manufacture and removed afterwards characterised by structural features
  • B22F 10/66 - Treatment of workpieces or articles after build-up by mechanical means
  • B33Y 10/00 - Processes of additive manufacturing
  • B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing

84.

METHOD, PLANNING DEVICE AND COMPUTER PROGRAM PRODUCT FOR PLANNING A LOCALLY SELECTIVE IRRADIATION OF A WORKING REGION WITH AN ENERGY BEAM, AND METHOD, MANUFACTURING DEVICE AND COMPUTER PROGRAM PRODUCT FOR ADDITIVELY MANUFACTURING COMPONENTS FROM A POWDER MATERIAL

      
Application Number EP2022079078
Publication Number 2023/083575
Status In Force
Filing Date 2022-10-19
Publication Date 2023-05-19
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Gutmann, Bernhard
  • Maurer, Dominik
  • Meiners, Wilhelm
  • Risse, Jeroen

Abstract

The invention relates to a method for planning a locally selective irradiation of a working region (15) with an energy beam (11), in order to manufacture a component (3) layer-by-layer from a plurality of powder material layers (19) of a powder material (5) arranged in the working region chronologically one after another in a layer sequence by means of the energy beam (11), wherein, for at least one powder material layer (19) of the plurality of powder material layers (19), a shifting of the energy beam (11) in sections along a contour line (33) of the component to be produced is determined, wherein a plurality of contour path vectors (300) are determined for the shifting of the energy beam (11) in sections along the contour line (33), and wherein a maximum length of less than 1 mm is determined for the contour path vectors (300), wherein an irradiation plan is obtained for the locally selective irradiation of the working region (15) with the energy beam (11).

IPC Classes  ?

  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
  • 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

85.

METHOD, PLANNING DEVICE AND COMPUTER PROGRAM PRODUCT FOR PLANNING A LOCALLY SELECTIVE IRRADIATION OF A WORKING REGION WITH AN ENERGY BEAM, AND METHOD, MANUFACTURING DEVICE AND COMPUTER PROGRAM PRODUCT FOR ADDITIVELY MANUFACTURING COMPONENTS FROM A POWDER MATERIAL

      
Application Number EP2022081405
Publication Number 2023/083929
Status In Force
Filing Date 2022-11-10
Publication Date 2023-05-19
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Maurer, Dominik
  • Gutmann, Bernhard
  • Meiners, Wilhelm
  • Risse, Jeroen

Abstract

The invention relates to a method for planning a locally selective irradiation of a working region (15) with an energy beam (11), in order to manufacture a component (3) layer-by-layer from a plurality of powder material layers (19) of a powder material (5) arranged in the working region chronologically one after another in a layer sequence by means of the energy beam (11), wherein at least one first powder material layer (19, 19.1) is determined from the plurality of powder material layers (19), for which at least one first cross-sectional area (33) of the component (3) to be manufactured is determined, which is to be hardened in the powder material layer (19) by means of the energy beam (11), wherein a plurality of irradiation vectors (300) for the irradiation of the cross-sectional area (33) to be hardened are determined, and wherein a chronological sequence for at least two directly adjacent neighbouring irradiation vectors (310) of the plurality of irradiation vectors (300) is determined according to at least one proximity parameter determined for the neighbouring irradiation vectors (310) with a respective at least one further irradiation vector (320) with temporal priority; wherein an irradiation plan is obtained for the locally selective irradiation of the working region (15) with the energy beam (11).

IPC Classes  ?

  • 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
  • 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 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures

86.

METHOD FOR OPERATING A MANUFACTURING SYSTEM FOR THE ADDITIVE MANUFACTURE OF COMPONENTS FROM A POWDER MATERIAL

      
Application Number EP2022081406
Publication Number 2023/083930
Status In Force
Filing Date 2022-11-10
Publication Date 2023-05-19
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Blickle, Valentin
  • Schaal, Frederik
  • Peters, Julia

Abstract

The invention relates to a method for operating a manufacturing system for the additive manufacture of components from a powder material which is applied in layers on a construction platform in a construction chamber of the manufacturing system and is locally welded by means of exposure, wherein quality parameters (Q) of a working layer (AS) of the powder material are ascertained, at least in the region of the component or components that are being manufactured, and analyzed by means of a monitoring device, and when the ascertained quality parameters (Q) exceed admissible tolerance values manufacture of the relevant component or components is terminated.

IPC Classes  ?

  • 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 12/90 - 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
  • B22F 10/322 - Process control of the atmosphere, e.g. composition or pressure in a building chamber of the gas flow, e.g. rate or direction
  • B22F 10/37 - Process control of powder bed aspects, e.g. density
  • G06T 7/00 - Image analysis

87.

METHOD FOR MONITORING A LASER WELDING PROCESS FOR WELDING TWO WORKPIECES WITH REGARD TO A BRIDGED GAP

      
Application Number 18156413
Status Pending
Filing Date 2023-01-19
First Publication Date 2023-05-18
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Hesse, Tim
  • Hecker, Sebastian

Abstract

A method for monitoring a laser welding process for welding two workpieces using a laser wavelength, in which a pulsed laser beam is directed into the workpieces so as to melt a melting volume in a region of an interface of the two workpieces in order to produce a weld seam, and in which an intensity of a process radiation emitted by the melting volume is detected. According to the method for monitoring the lase welding process, in a first step, a detected intensity profile is evaluated with regard to at least one of the following features: (i) a depth of an intensity decrease, (ii) a duration of an intensity decrease, and (iii) a renewed increase in intensity after an intensity decrease. In a second step it is determined whether or not a gap between the two workpieces was bridged during the laser welding process based on the evaluation.

IPC Classes  ?

  • B23K 26/03 - Observing, e.g. monitoring, the workpiece
  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/24 - Seam welding
  • B23K 26/324 - Bonding taking account of the properties of the material involved involving non-metallic parts
  • C03B 23/20 - Uniting glass pieces by fusing without substantial reshaping
  • C03B 23/00 - Re-forming shaped glass

88.

APPARATUS AND METHOD FOR HARDENING A TRANSPARENT MATERIAL

      
Application Number 18157090
Status Pending
Filing Date 2023-01-20
First Publication Date 2023-05-18
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Zimmermann, Felix
  • Schaefer, Marcel

Abstract

A method for hardening a transparent material includes the steps of introducing a material modification to the transparent material using a laser beam of ultrashort laser pulses of an ultrashort pulse laser so as to harden at least a portion of the transparent material.

IPC Classes  ?

  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/046 - Automatically focusing the laser beam
  • B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head

89.

MANUFACTURING DEVICE AND METHOD FOR THE ADDITIVE MANUFACTURING OF A COMPONENT PART FROM A POWDER MATERIAL, AND METHOD FOR PRODUCING A SPECIFIC INTENSITY PROFILE OF AN ENERGY BEAM

      
Application Number 18149175
Status Pending
Filing Date 2023-01-03
First Publication Date 2023-05-11
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Allenberg-Rabe, Matthias
  • Blickle, Valentin
  • Gruenewald, Jonas
  • Wagenblast, Philipp
  • Meiners, Wilhelm

Abstract

A manufacturing device for additive manufacturing of component parts from a powder material includes a beam producing device, a scanner device configured to displace an energy beam to a plurality of irradiation positions, a deflection device configured to displace the energy beam at an irradiation position to a plurality of beam positions, and a control device configured to control the deflection device and to produce a specific intensity profile in the beam region. The control device does this by dividing and displacing the energy beam to at least two beam positions separated by a distance that is variably settable and/or by displacing the energy beam and by specifying at least one operating parameter of the deflection, such as a residence time at a beam position, a beam position density distribution, a frequency distribution, and an intensity influencing parameter of the energy beam deflected to the beam positions.

IPC Classes  ?

  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • 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 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/073 - Shaping the laser spot

90.

MANUFACTURING DEVICE FOR ADDITIVE MANUFACTURING OF COMPONENT PARTS FROM A POWDER MATERIAL, METHOD FOR CHANGING A BEAM PROFILE OF AN ENERGY BEAM, AND USE OF AT LEAST ONE ACOUSTO-OPTIC DEFLECTOR

      
Application Number 18149169
Status Pending
Filing Date 2023-01-03
First Publication Date 2023-05-11
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Allenberg-Rabe, Matthias
  • Blickle, Valentin
  • Gruenewald, Jonas
  • Wagenblast, Philipp
  • Meiners, Wilhelm

Abstract

A manufacturing device for additive manufacturing of a component part from a powder material includes a beam generating device configured to generate an energy beam, a scanner device configured to displace the energy beam to a plurality of irradiation positions in order to produce the component part from the powder material arranged in the work region using the energy beam, a deflection device configured to displace the energy beam to a plurality of beam positions at an irradiation position of the plurality of irradiation positions within a beam region, and a control device operatively connected to the deflection device and configured to control the deflection device and to change a beam profile of the beam region during production of a component part by changing a control of the deflection device.

IPC Classes  ?

  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
  • B22F 12/49 - Scanners

91.

MATERIAL DEPOSITION UNIT FOR POWDER BUILD-UP WELDING

      
Application Number 17879830
Status Pending
Filing Date 2022-08-03
First Publication Date 2023-05-11
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Ganter, Robert
  • Hesse, Tim
  • Kruse, Kevin
  • Link, Gerhard
  • Mueller, Steven
  • Opitz, Marco
  • Sautter, Bjoern
  • Goetzelmann, Fabian
  • Speker, Nicolai
  • Horer, Franziska
  • Tran, Anh-Thu
  • Wessinger, Benedikt

Abstract

A material deposition unit includes a radiation unit designed to emit electromagnetic radiation in a directed manner onto a workpiece along a beam axis, and a powder discharge device that has multiple powder discharge units configured to discharge powder in a directed form onto the workpiece through powder-outlet openings. The material deposition unit further includes a powder division unit having multiple powder channels. A number of powder channels corresponds to a number of powder discharge units. The powder division unit is designed to distribute a central powder stream guided to a feed channel uniformly over the powder channels. Each respective powder channel is connected to a respective powder discharge unit by an exchangeable connecting element. At least one powder discharge unit has an exchangeable powder discharge element, which is elongate, has a first end and a second end, and is arranged at least partially within the corresponding powder discharge unit.

IPC Classes  ?

  • B22F 12/50 - Means for feeding of material, e.g. heads
  • B23K 26/342 - Build-up welding
  • B23K 26/14 - 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
  • B22F 12/40 - Radiation means
  • 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

92.

METHOD, PLANNING DEVICE AND COMPUTER-PROGRAM PRODUCT FOR PLANNING LOCALLY SELECTIVE IRRADIATION OF A WORKING AREA WITH AN ENERGY BEAM, AND METHOD, PRODUCTION DEVICE AND COMPUTER-PROGRAM PRODUCT FOR THE ADDITIVE MANUFACTURING OF COMPONENTS FROM A POWDER MATERIAL

      
Application Number EP2022079973
Publication Number 2023/078762
Status In Force
Filing Date 2022-10-26
Publication Date 2023-05-11
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Maurer, Dominik
  • Gutmann, Bernhard

Abstract

The invention relates to a method for planning locally selective irradiation of a working area (15) with an energy beam (11), in order to use the energy beam (11) to produce a component (3) layer by layer from a plurality of powder-material layers (19) of a powder material (5) arranged successively over time in a sequence of layers in the working area (15), wherein - at least one first powder-material layer (19.1) is selected from the plurality of powder-material layers (19) to be the one for which at least one first cross-sectional region (33.1) of the component (3) to be produced that is to be fused in the powder-material layer (19) by means of the energy beam (11) is selected, wherein the at least one first cross-sectional region (33.1) is divided into a first skin region (35.1) and a first core region (37.1), wherein - at least one second powder-material layer (19.2) is selected from the plurality of powder-material layers (19) to be the one for which at least one second cross-sectional region (33.2) of the component (3) to be produced that at least partially overlaps with the first cross-sectional region (33.1) and is to be fused by means of the energy beam (11) is selected, wherein the at least one second cross-sectional region (33.2) is divided into a second skin region (35.2) and a second core region (37.2), wherein - for the first cross-sectional region (33.1), irradiation with the energy beam (11) in the first skin region (35.1) is selected with a reduced average energy input over time in comparison with the first core region (37.1), wherein - for the second cross-sectional region (33.2), irradiation with the energy beam (11) is only selected for the second core region (37.2), while the second skin region (35.2) is selected not to be irradiated, and wherein - an irradiation plan is obtained for the locally selective irradiation of the working area (15) with the energy beam (11).

IPC Classes  ?

  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • B22F 10/36 - Process control of energy beam parameters
  • B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
  • B22F 10/38 - Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
  • 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 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

93.

METHOD FOR THE LASER PROCESSING OF A WORKPIECE WITH REDUCED INTENSITY GAP

      
Application Number EP2022077733
Publication Number 2023/061831
Status In Force
Filing Date 2022-10-05
Publication Date 2023-04-20
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Haug, Patrick
  • Speker, Nicolai
  • Sailer, Christof
  • Seebach, Johannes

Abstract

The invention relates to a method for processing a workpiece (10) by means of a laser beam (8), wherein: the laser beam (8) is provided at a fiber end (1) of an optical cable (2); the optical cable (2) at least comprises a core fiber (3), which has a core fiber diameter KFD, a ring fiber (4), which annularly surrounds the core fiber (3) and has an outer ring fiber diameter ARFD, and a cladding layer (5), which lies between the core fiber (3) and the ring fiber (4) and surrounds the core fiber (3) and has a cladding layer thickness MSD, the laser beam (8) thus comprising a core beam (6) from the core fiber (3) and a ring beam (7) from the ring fiber (4); the laser beam (8) is focused toward the workpiece (10) in a focal plane (11) at a magnification ratio AV; in the focal plane (11), the core beam (6) has a core beam diameter KSD within which 86% of the laser power of the core beam (6) is present, the ring beam (7) has an outer ring beam diameter ARSD within which 86% of the laser power of the ring beam (7) is present, and the ring beam (7) has an inner ring beam diameter IRSD at which the same circumferentially averaged irradiance of the ring beam (7) as at the outer ring beam diameter ARSD is present, so that an intensity gap (9) between the inner ring beam diameter IRSD and the core beam diameter KSD with an intensity gap width ILB = (IRSD - KSD) / 2 results. The method is characterized in that MSD ≤ 0.3 * KFD and furthermore ILB ≤ 0.3 * KSD, and in that MSD ≤ 20 µm, preferably < 10 µm, and ILB ≤ 20 µm * AV, preferably < 10 µm * AV. By means of the invention, the processing quality of a workpiece can be improved.

IPC Classes  ?

  • B23K 26/073 - Shaping the laser spot
  • B23K 26/21 - Bonding by welding
  • B23K 26/38 - Removing material by boring or cutting
  • 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
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing

94.

LASER WELDING METHOD

      
Application Number EP2022077364
Publication Number 2023/061782
Status In Force
Filing Date 2022-09-30
Publication Date 2023-04-20
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Speker, Nicolai
  • Hesse, Tim

Abstract

The invention relates to a method for laser welding two, preferably metal, components (19, 12), wherein a pulsed laser beam (18) is directed onto a surface (20) of one of the components (10) such that the material of the components (10, 12) is melted in the area of a weld seam (23) to be produced, wherein the laser beam (18) has an intensity profile that has an annular intensity maximum and a local intensity minimum in its centre, wherein the intensity in the intensity minimum is at least 10% smaller than in the intensity maximum (30), and wherein a depth (34) of the produced weld seam (23) is at most as large as a width (36) of the weld seam.

IPC Classes  ?

  • B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/073 - Shaping the laser spot
  • B23K 26/21 - Bonding by welding
  • B23K 26/244 - Overlap seam welding
  • B23K 26/323 - Bonding taking account of the properties of the material involved involving parts made of dissimilar metallic material

95.

METHOD FOR LASER WELDING A WORKPIECE, THE METHOD SWITCHING QUICKLY BETWEEN WELDING ZONES HAVING DIFFERENT MATERIALS TO BE WELDED

      
Application Number EP2022077365
Publication Number 2023/061783
Status In Force
Filing Date 2022-09-30
Publication Date 2023-04-20
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor Bocksrocker, Oliver

Abstract

A method for laser welding a workpiece (17), wherein: a laser beam (8) is directed onto the workpiece (17) by means of a scanning optical unit (13); using the laser beam (8) and in any order, a first part (21) is welded to a base element (20) at least in a first welding zone (31) and a second part (22) is welded to the base element (20) in a second welding zone (32); and the first part (21) and the second part (22) are made of different materials, at least in the region of the first and second welding zones (21, 22), the method being characterised in that the laser energy of the laser beam (8) can be split variably at least between a core component (KA) corresponding to a core beam (9) of the laser beam, and a ring component corresponding to a ring beam (10) that surrounds the core beam (9), and in that the splitting of the laser energy into the core component (KA) and the ring component is selected differently when welding the first welding zone (21) and when welding the second welding zone (22). The invention enables faster production of workpieces, wherein parts made of different materials are welded onto one base element.

IPC Classes  ?

  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • 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
  • B23K 26/073 - Shaping the laser spot
  • B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
  • B23K 101/00 - Articles made by soldering, welding or cutting
  • B23K 103/20 - Ferrous alloys and aluminium or alloys thereof
  • B23K 103/22 - Ferrous alloys and copper or alloys thereof
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing

96.

LASER CUTTING METHOD AND LASER CUTTING APPARATUS

      
Application Number 18053384
Status Pending
Filing Date 2022-11-08
First Publication Date 2023-04-13
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Dounassre, Hamza
  • Hesse, Tim
  • Kramlich, Olga
  • Seebach, Johannes
  • Speker, Nicolai

Abstract

A method for laser cutting a workpiece having a thickness of less than 6 mm includes the steps of directing a first laser beam, a second laser beam, and a gas jet at an entrance surface of the workpiece such that the first and second laser beams at least partially overlap one another on the workpiece. The first laser beam has a smaller focus diameter than the second laser beam, a beam parameter product of the first laser beam is at most 5 mm*mrad, and a power proportion of the second laser beam of a total laser power is less than 20%. A cutting kerf with a broken cutting edge is formed on the entrance surface of the workpiece.

IPC Classes  ?

  • B23K 26/38 - Removing material by boring or cutting
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/14 - 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

97.

MANUFACTURING DEVICE WITH LARGE-AREA SINKING GAS STREAM

      
Application Number 18060586
Status Pending
Filing Date 2022-12-01
First Publication Date 2023-03-30
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Schaede, Florian
  • Nekic, Robert
  • Matatko, Sebastian

Abstract

A manufacturing device for additive manufacture of a three-dimensional component from a powder includes a manufacturing space delimited by a working surface including a powder bed region and a top wall including a protective glass window disposed above the powder bed region. A laser beam can be emitted through the protective glass window and through a beam passage zone to irradiate powder in the powder bed region. A shielding gas system has two outflow ducts, each disposed on the top wall and extending along a duct axis K on each side of the beam passage zone. Each output duct has a duct wall and duct wall sections that allow passage of gas and extend along the duct over an outflow length corresponding at least to an extent of the powder bed region.

IPC Classes  ?

  • B22F 12/70 - Gas flow means
  • B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
  • 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

98.

METHOD AND DEVICE FOR THE LASER PROCESSING OF A WORKPIECE

      
Application Number EP2022074994
Publication Number 2023/041417
Status In Force
Filing Date 2022-09-08
Publication Date 2023-03-23
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Flamm, Daniel
  • Kaiser, Myriam
  • Kleiner, Jonas

Abstract

The invention relates to a method for the laser processing of a workpiece (104) which has a transparent material (102). An input laser beam (108) is split into a plurality of sub-beams (116) by means of a beam splitting element (106), and sub-beams (116) coupled out of the beam splitting element (106) are focused, wherein multiple focal elements (120) are formed by focusing the sub-beams (116), the distance (d) of adjacent focal elements (120) equaling at least 3 µm and/or at most 70 µm, and the focal elements (120) are supplied to the material (102) of the workpiece (104) in order to carry out the laser processing.

IPC Classes  ?

  • C03B 33/02 - Cutting or splitting sheet glass; Apparatus or machines therefor
  • B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
  • B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
  • B23K 26/53 - Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
  • C03B 33/09 - Severing cooled glass by thermal shock
  • C03C 1/00 - Ingredients generally applicable to manufacture of glasses, glazes or vitreous enamels

99.

SPATTER DETECTION USING ARTIFICIAL INTELLIGENCE IN LASER PROCESSING

      
Application Number EP2022074377
Publication Number 2023/031353
Status In Force
Filing Date 2022-09-01
Publication Date 2023-03-09
Owner TRUMPF LASER- UND SYSTEMTECHNIK GMBH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Hartung, Julia
  • Jahn, Andreas
  • Salvarrajan, Vinayakraj

Abstract

The invention relates to a method (12) and a device (10) for detecting spatter (48) during laser processing of a workpiece (22) by means of a processing laser beam (18). Process lighting (24) generated during laser processing and/or the reflection (26) of additional lighting is/are detected by an optical sensor (28). The optical sensor (28) captures at least one image (44a-c), in particular several images (44a-c), and transmits the signal(s) (36) thereof to an evaluation unit (38). The evaluation unit (38) has an algorithm (40) for machine learning. The algorithm (40) is trained by previously captured and evaluated images (44a-c), in particular with captured spatter (46a, b). The algorithm (40) is trained to recognise spatter (48) occurring during laser processing and to output this information as an output (50). The output (50) can be sent to a control unit (52) for open-loop or closed-loop controlling the laser processing machine (14).

IPC Classes  ?

100.

METHOD FOR MONITORING AN ATTACHMENT AREA DURING THE LASER WELDING OF BENT BAR-TYPE CONDUCTORS CONTAINING COPPER

      
Application Number 18054550
Status Pending
Filing Date 2022-11-11
First Publication Date 2023-03-02
Owner TRUMPF Laser- und Systemtechnik GmbH (Germany)
Inventor
  • Bocksrocker, Oliver
  • Speker, Nicolai

Abstract

A method for monitoring an attachment area during laser welding of bent bar-type conductors containing copper, includes the steps of arranging a first bar-type conductor relative to a second bar-type conductor in partially overlapping fashion and welding the first and second bar-type conductors to one another using a processing laser beam, the welding including forming a weld bead interconnecting the bar-type conductors to one another. After the welding, at least one measurement variable is measured on at least one portion of the weld bead, wherein the at least one measurement variable changes with the temperature of the weld bead as a function of the time during a cooling down of the weld bead. A parameter depending on a heat capacity of the weld bead is determined from the at least one measured measurement variable, and the attachment area qualitatively or quantitatively determined from the parameter.

IPC Classes  ?

  • B23K 31/12 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to investigating the properties, e.g. the weldability, of materials
  • B23K 26/22 - Spot welding
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