We describe a method for controlling an irradiation beam for irradiating a layer of raw material powder in an additive layer manufacturing process for producing a three-dimensional work piece, wherein the method comprises: depositing, with a layer depositing mechanism, a said layer of raw material powder on top of a carrier and/or on top of a preceding material layer on top of the carrier; and controlling the irradiation beam to irradiate at least a portion of the layer of raw material powder in an irradiation area when a distance between the irradiation area and the layer depositing mechanism is above a threshold distance, and wherein the threshold distance is dependent on (i) a speed of movement of the layer depositing mechanism, and (ii) a speed, vg, of a gas flow over the layer of raw material powder.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
2.
METHOD OF OPERATING AN IRRADIATION SYSTEM, IRRADIATION SYSTEM AND APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
In a method of operating an irradiation system (10) for irradiating layers of a raw material powder with laser radiation in order to produce a three-dimensional work piece (110) at least a section of a raw material powder layer (11) applied onto a carrier (102) is selectively irradiated with linearly polarized laser radiation having a degree of polarisation, DOP, of no more than 99% and no less than 30%. An orientation of a plane of polarization of the linearly polarized laser radiation is controlled in dependence on an orientation of a plane of incidence of the linearly polarized laser radiation on the raw material.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
B29C 64/282 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED] of the same type, e.g. using different energy levels
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
111,112,122121,212,221,12,11, 22,22,2) are evaluated so as to determine focus positions of the radiation beam (14) in the z-direction in dependence on an x-y position within the calibration plane (30). In a step vi) the irradiation system (10) is calibrated based on the determined focus positions of the radiation beam (14).
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 10/85 - Data acquisition or data processing for controlling or regulating additive manufacturing processes
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
Device for calibrating an optical system (24), in particular for use in an apparatus (100) for producing a three-dimensional work piece by irradiating layers of a raw material powder, the device comprising: i) a target (32) configured to be irradiated with a radiation beam (14) emitted by an optical unit (16) at a known position within a scanner coordinate system of a scanner (22) configured to scan the radiation beam (14) across an irradiation plane (I) so as to generate a calibration spot (C); ii) a calibration beam emission device configured to emit a calibration beam (36) from the calibration spot (C) in a direction of the optical system (24) to be calibrated; and iii) an adjustment device configured to allow a calibration of the optical system (24) such that a beam path of the calibration beam (36) emitted from the calibration spot (C) is collinear with a beam path of the radiation beam (14) used for generating the calibration spot (C).
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 10/368 - Temperature or temperature gradient, e.g. temperature of the melt pool
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
G05B 19/401 - 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 measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
5.
GENERATIVE LAYER-BUILDING PROCESS WITH VARIOUS RAW-MATERIAL POWDERS, AND INSTALLATION THEREFOR
The present disclosure concerns an installation (1) for producing, according to choice - at least a first workpiece (25) from at least a first raw-material powder (9) in a first building job by means of a generative layer-building process and - at least a second workpiece (33) from at least a second raw-material powder (23) in a second building job by means of a generative layer-building process, wherein the installation (1) has at least one raw-material powder guide for guiding the first and/or second raw-material powder (9, 23) during a building job, characterized in that the installation (1) has a cleaning operating mode, in which, between the first building job and the second building job, a cleaning amount of second raw-material powder (23) is passed at least through a portion of the raw-material powder guide and raw-material powder (9, 23) with a residual fraction of first raw-material powder (9) is removed from the portion of the raw-material powder guide.
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
6.
TECHNIQUE FOR DEFINING A PLURALITY OF IRRADIATION VECTORS
A method for defining a plurality of irradiation vectors for an apparatus for producing a three-dimensional work piece via additive manufacturing is provided. The method comprises, for a layer of a three-dimensional work piece to be generated, defining a downskin region in the layer, and defining a set of first irradiation vectors covering the downskin region. At least one of the first irradiation vectors extends into a volume region of the layer, adjacent to the downskin region. The at least one of the first irradiation vectors has a length of 1 mm or more. The method further comprises defining a set of second irradiation vectors covering a remaining part of the volume region of the layer, assigning a first set of irradiation parameters to the set of first irradiation vectors, and assigning a second set of irradiation parameters to the set of second irradiation vectors, the second set of irradiation parameters being different from the first set.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
A method for calibrating a position of a laser beam in an apparatus comprising at least one optical unit for directing the laser beam is provided. The at least one optical unit comprises a plurality of optical elements. The method comprises setting a first optical configuration for the plurality of optical elements of the at least one optical unit and thereby directing the laser beam onto a measurement plane with a first focus spot size, measuring a first position within the measurement plane, of the laser beam generated with the first optical configuration, setting a second optical configuration for the plurality of optical elements of the at least one optical unit and thereby directing the laser beam onto the measurement plane with a second focus spot size different from the first focus spot size, measuring a second position within the measurement plane, of the laser beam generated with the second optical configuration, and determining at least one correction value based on the measured first position and the measured second position.
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
G01J 1/02 - Photometry, e.g. photographic exposure meter - Details
G01J 1/42 - Photometry, e.g. photographic exposure meter using electric radiation detectors
8.
SYSTEM AND METHOD FOR DISTRIBUTING RAW MATERIAL POWDER TO A PLURALITY OF ADDITIVE MANUFACTURING MACHINES
The present disclosure relates to a system (5) for distributing raw material powder from a reservoir (7) of raw material powder (6) to a plurality of at least two additive manufacturing machines (3) for additive manufacturing, the system (5) comprising at least one gas flow drive (11) and at least two conveying lines (15) for conveying the raw material powder (6) to the at least two additive manufacturing machines (3) by a gas flow driven by the at least one gas flow drive (11), characterised in that the system further comprises a feeding manifold (30) for feeding the at least two conveying lines (15) with the raw material powder (6), wherein the feeding manifold (30) is configured and arranged to selectively guide, controlled by means of at least two shut-off valves (37), the raw material powder (6) into one of the at least two conveying lines (15), wherein each of the at least two shut-off valves (37) is arranged at the feeding manifold (30) and configured to selectively close and open for selectively feeding the at least two conveying lines (15) with the raw material powder (6).
B22F 12/84 - Parallel processing within single device
B65G 37/00 - Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
B65G 53/00 - Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
B65G 65/30 - Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subc
9.
METHOD, DEVICE AND APPARATUS FOR CONTROLLING AN IRRADIATION BEAM
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
10.
PROCESS CHAMBER FOR AN ADDITIVE MANUFACTURING APPARATUS AND METHOD FOR OPERATING THE PROCESS CHAMBER
A process chamber housing (1) for an additive manufacturing apparatus with a process chamber having a bottom (9), a ceiling (10) and side walls (11, 12, 13), jointly enclosing a volume (51) of the process chamber (5), an inert gas inlet 6 in a front wall (11) of the side walls (11, 12, 13), configured to provide an inert gas into the process chamber (5) and an inert gas outlet (7) in a rear wall (12) of the side walls (11, 12, 13) configured to release the inert gas out of the process chamber (5), provides for an increased beam quality if the inert gas inlet (6) and the inert gas outlet (7) are positioned at oppo-site sides of the opening (94) and both face towards the each other, thereby being configured establish an inert gas flow (2) in a main flow direction (2) from the inert gas inlet 6 over the opening, to the inert gas outlet (7).
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 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
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
A method of controlling an irradiation system (10) for irradiating layers of a raw material powder with a radiation beam (14) in order to produce a three-dimensional work piece (110) is described. The method comprises the steps of defining, for at least one raw material powder layer to be irradiated, a scanning pattern comprising a plurality of irradiation sections (20), wherein, within each of the plurality of irradiation sections (20), a plurality of scanning vectors (V) is defined, according to which the radiation beam (14) is scanned across the raw material powder layer; determining, for each of the plurality of irradiation sections (20), whether the irradiation section (20) contains a downskin area (22); and defining, for each of the plurality of irradiation sections (20), a scanning order direction (S) according to which the scanning vectors (V) within the irradiation section (20) are scanned one after another in dependence on the determination of whether the irradiation section (20) contains a downskin area (22).
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 64/282 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED] of the same type, e.g. using different energy levels
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
13.
TECHNIQUE FOR REMOVING POWDER AND/OR PARTICLES FROM A POWDER BED
The invention relates to a device for removing powder and/or particles from a powder bed. The device comprises a rotatably mounted roll having a porous outer wall and comprises a plurality of chambers formed inside the roll. The device also comprises a connection for negative-pressure supply that is designed to supply at least one of the chambers with negative pressure at a given point in time. The at least one of the chambers has an opening which is suitable for supplying the chamber with negative pressure.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/194 - Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control during lay-up
14.
RESOURCE MANAGEMENT SYSTEM AND ADDITIVE MANUFACTURING FACILITY WITH SUCH
The present disclosure relates to a resource management system (39) for managing a supply of resource material and/or resource items to a plurality of at least two additive manufacturing machines (3) for additive manufacturing, wherein the resource management system (39) comprises a control unit (41 ) being configured to receive a signal indicative of a demand for resource material and/or resource items of any of the additive manufacturing machines (3), wherein the control unit (39) is configured to schedule the supply of demanded resource material and/or resource items according to a pre-determined prioritisation scheme for resolving demand conflicts.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control (DNC), flexible manufacturing systems (FMS), integrated manufacturing systems (IMS), computer integrated manufacturing (CIM)
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
15.
APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
An apparatus (10) for producing a three-dimensional work piece (46) by irradiating layers of a raw material powder with electromagnetic or particle radiation comprises a process chamber (16) accommodating a carrier (12) and a powder application device (14) for applying a layer of raw material powder onto the carrier (12). The apparatus (10) further comprises an irradiation unit (26) for selectively irradiating the layer of raw material powder with electromagnetic or particle radiation in accordance with a geometry of a corresponding layer of the work piece (18) to be produced. An absorption device (50) which is adapted to absorb heat radiation emitted upon selectively irradiating the layer of raw material powder with electromagnetic or particle radiation is provided in the process chamber (16) and/or in the irradiation unit (26) at such a position that it is capable of absorbing radiation occurring in an interior of the process chamber (16) and/or in an interior of the irraditation unit (26).
B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
B22F 12/00 - Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
B33Y 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
A dosing feeder for a powder-fusing apparatus comprising a powder inlet configured to receive powder from a discharge opening of a powder bunker (20), a powder outlet (53), being configured to release powder to a recoater reservoir (65) of the powder fusion apparatus (1) and a powder support (55), being located in between of the powder inlet and the powder outlet, and configured to convey powder from the powder inlet to the powder outlet enables to dose the powder being transferred from the powder bunker (20) to the recoater reservoir (65) with high precision if the powder support is coupled to an ultrasonic transmitter (47) and/or to a vibrational drive (47).
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
In a method of operating an irradiation system (10) for irradiating layers of a raw material powder with electromagnetic or particle radiation in order to produce a three-dimensional work piece (110) it is determined whether a region of a raw material powder layer (11) to be selectively irradiated with electromagnetic or particle radiation in accordance with a geometry of a corresponding layer of the work piece (110) to be produced is affected or substantially unaffected by particulate impurities. Upon selectively irradiating the region of the raw material powder layer (11) with electromagnetic or particle radiation, an energy density applied to the region of the raw material powder layer (11) by a radiation beam (14a, 14b) is controlled in such a manner that the energy density is higher in case it is determined that the region of the raw material powder layer (11) is affected by particulate impurities than in case it is determined that the region of the raw material powder layer (11) is substantially unaffected by particulate impurities.
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
B22F 12/90 - Means for process control, e.g. cameras or sensors
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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
18.
METHOD OF OPERATING AN IRRADIATION SYSTEM, IRRADIATION SYSTEM AND APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE WITH POLARIZATION CONTROL
In a method of operating an irradiation system (10) for irradiating layers of a raw material powder with laser radiation in order to produce a three-dimensional work piece (110) at least a section of a raw material powder layer (11) applied onto a carrier (102) is selectively irradiated with linearly polarized laser radiation. An orientation of a plane of polarization of the linearly polarized laser radiation is controlled in dependence on an orientation of a plane of incidence of the linearly polarized laser radiation on the raw material.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
G02B 26/00 - Optical devices or arrangements for the control of light using movable or deformable optical elements
G02B 27/28 - Optical systems or apparatus not provided for by any of the groups , for polarising
19.
METHOD OF OPERATING AN APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE AND APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
Method of operating an apparatus for producing a three-dimensional work piece and apparatus for producing a three-dimensional work piece A method of operating an apparatus (10) for producing a three-dimensional work piece (1S) by irradiating layers of a raw material powder with electromagnetic or particle radiation comprises the steps of a) applying a layer of raw material powder onto a carrier (12); b) selectively irradiating the layer of raw material powder with electromagnetic or particle radiation in accordance with a geometry of a corresponding layer of the work piece (18) to be produced; and c) repeating steps a) and b) until the work piece (18) has reached the desired shape and size. For at least a poftion of at least some of the layers, a scanning time (G) from the beginning of the exposure of a respective raw material powder layer portion to electromagnetic or particle radiation until the beginning of the exposure of a new raw material powder layer applied on top of said layer portion to electromagnetic or particle radiation is controlled so as to not fall below a specific minimum value which is individually set for said layer portion in dependence on a layer portion specific quality parameter. layer portion specific quality parameter.
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 64/194 - Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control during lay-up
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
20.
METHOD AND APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE VIA ADDITIVE LAYER MANUFACTURING
We describe a method comprising: defining an irradiation section, in particular an irradiation stripe, on a material layer to be irradiated, in an additive layer manufacturing process, with an irradiation beam scanned across the material layer, and defining, within the irradiation section, two or more parallel or substantially parallel scanning vectors for said scanning of a said irradiation beam across the material layer, wherein all scanning vectors within the irradiation section are parallel or substantially parallel with respect to each other, wherein, based on said defining of the two or more parallel or substantially parallel scanning vectors, a line results which connects a first location, on the material layer, of a change in irradiation energy density of a said irradiation beam for a first one of the two or more parallel or substantially parallel scanning vectors and a second location, on the material layer, of a change in irradiation energy density of a said irradiation beam for a second one of the two or more parallel or substantially parallel scanning vectors, wherein the first scanning vector and the second scanning vector are neighboring scanning vectors, wherein a distance between the first location and the second location is smaller than (i) a distance between the first location and a third location of a change in irradiation energy density of a said irradiation beam for the second one of the two or more parallel or substantially parallel scanning vectors and/or (ii) a distance between the second location and a fourth location of a change in irradiation energy density of a said irradiation beam for the first one of the two or more parallel or substantially parallel scanning vectors, and wherein an angle, which differs from 90 degrees (a) irrespectively of a geometry of a workpiece to be produced using the additive layer manufacturing process, and (b) irrespectively of an orientation of the two or more parallel or substantially parallel scanning vectors with respect to an orientation of the irradiation section, is formed (i) between the first scanning vector and the line, and/or (ii) between the second scanning vector and the line.
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 10/28 - 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
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
We describe a system for simulating process monitoring by a sensor system in an additive layer manufacturing, in particular selective laser melting, process used to solidify material from which a three-dimensional workpiece is to be produced, wherein the system comprises: a data input coupleable to a data output of the sensor system and configured to receive, from the sensor system, sensor data relating to the process monitored by the sensor system, wherein the data input is further configured to receive one or more input parameters (i) relating to the additive layer manufacturing process and/or (ii) associated with an additive layer manufacturing apparatus used for the additive layer manufacturing process and/or (iii) associated with the process monitoring and/or the sensor system; and a processing unit coupled to the data input and configured to generate, from the sensor data and the one or more input parameters, a model for simulating said process monitoring.
We describe a system for use in an apparatus for producing a three-dimensional workpiece using an additive layer manufacturing technique, the system comprising: an irradiation unit configured to selectively irradiate an irradiation plane with an irradiation beam, and a control unit coupled to the irradiation unit and configured to control the irradiation unit to modulate, as a function of a local process parameter when producing the three-dimensional workpiece, an irradiation beam property of the irradiation beam.
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
A device is provided, for analyzing sensor data of a sensor arranged in an apparatus for producing a three-dimensional work piece via irradiation of layers of raw material with an energy beam. The device comprises a control unit configured to receive the sensor data as a time series of data values. Each data value is indicative of a process condition within the apparatus during producing the three-dimensional work piece. The control unit is further configured to receive planning data for the three- dimensional work piece. The planning data defines a plurality of scanning vectors and a sequence according to which the energy beam is scanned along the scanning vectors. The control unit is further configured to associate data values of the time series to corresponding vector data of the scanning vectors of the planning data to form a plurality of sets of data values for corresponding scanning vectors and to define, based on the planning data, a group of at least two scanning vectors among the plurality of scanning vectors. The scanning vectors of the group meet a predefined similarity criterion. The control unit is further configured to compare the set of data values of a first scanning vector of the group to the set of data values of at least one second scanning vector of the group or to a combined set of data values derived from at least two second scanning vectors of the group, and to determine, based on the comparing, a quality measure of the work piece at a position of the first scanning vector. Further, a corresponding method and a corresponding computer program product are provided.
Method of treating a gas stream and method of operating an apparatus for producing a three-dimensional work piece In a method of treating a gas stream (32) containing combustible and/or reactive particles (34) at least a part of the pafticles (34) contained in the gas stream (32) is separated from the gas stream (32) by means of a separation device (36). The particles (34) separated from the gas stream (32) by means of the separation device (36) are supplied to a collecting vessel (40). The supply of particles (34) to the collecting vessel (40) is interrupted. A flame retardant material (57) is supplied to the collecting vessel (40) so as to form a cover layer of flame retardant material (57) on the particles (34) contained in the collecting vessel (40).
We describe a device for calibrating an irradiation system of an apparatus for producing a three-dimensional workpiece, the irradiation system comprising an irradiation unit for selectively irradiating an irradiation beam onto an irradiation plane, wherein the device comprises: a control unit configured to control the irradiation system to irradiate the irradiation beam onto the irradiation plane, and an optical detection unit coupled to the control unit, wherein the optical detection unit comprises an optical detector and an objective lens for optically detecting a portion of the irradiation plane, wherein the optical detection unit is configured to detect a position of a spot of the irradiation beam on the irradiation plane, wherein the objective lens is adapted to be arranged, with respect to an irradiation beam path of the irradiation beam, between the optical detector and an irradiation beam scanner of the irradiation system, wherein the optical detection unit is configured to detect the position of the spot of the irradiation beam in multiple focal planes based on a focal length of the optical detection unit being adjustable, wherein the optical detection unit is configured to output a signal to the control unit in response to the optical detection unit detecting the position of the spot of the irradiation beam on the irradiation plane, and wherein the control unit is configured to control the irradiation system based on the signal output from the optical detection unit to the control unit.
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
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
G05B 19/401 - 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 measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
26.
OPTICAL UNIT AND SYSTEM FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE
The invention relates to an optical unit for use in a system for producing a three-dimensional workpiece by means of a beam melting method. The optical unit comprises an optical system for generating a beam and for directing the beam onto a predetermined site, and a housing having a housing base and an opening provided in the housing base, which is transparent for the beam so that same can pass through the opening. The optical unit has a lower section comprising the housing base and with two lateral walls each running parallel to a first direction, and an upper section connected to the lower section and having two lateral walls each running parallel to the first direction, wherein the lower section and the upper section are arranged offset to one another such that a first lateral wall of the lateral walls of the lower section does not run in the same plane as a first lateral wall of the lateral walls of the upper section, and a second lateral wall of the lateral walls of the lower section does not run in the same plane as a second lateral wall of the lateral walls of the upper section. The invention also relates to a system for producing a three-dimensional workpiece.
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
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
27.
POWDER SUPPLY SYSTEM, METHOD OF OPERATING A POWDER SUPPLY SYSTEM AND APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
The invention is directed to a powder supply system (1) for use in an apparatus (100) for producing a three-dimensional work piece by irradiating layers of a raw material powder (a) with electromagnetic or particle radiation. The powder supply system (1) comprises a circuit line (7) configured to conduct a gas stream (9), a conveying device (19) configured to convey the gas stream (9) through the circuit line (7), a powder doser (8) configured to introduce a desired dose of raw material powder (4) into the gas stream (9) flowing through the circuit line (7), a measuring unit (15) configured to measure at least one of a pressure and a volume flow in the circuit line (7) at a position downstream of the powder doser (8), and a control unit (40) configured to control the powder doser (8) based on at least one of a pressure value and a volume flow value measured by the measuring unit (15) in such a manner that the at least one of the pressure value and the volume flow value measured by the measuring unit (15) is within a predetermined range.
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 3/105 - Sintering only by using electric current, laser radiation or plasma
B65G 53/66 - Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
The invention relates to a seal system (100, 200, 300) for an installation (400) for producing a three-dimensional workpiece by means of an additive layering method, the seal system (100, 200, 300) comprising: a first seal (102), which is designed to seal an intermediate space (116) at a first periphery (108) between a process chamber inner wall (110) and a powder-material-supporting plate assembly (112) in a process chamber (410) of the installation (400); and a second seal (104), which is designed to seal the intermediate space (116) at a second periphery (114) between the process chamber inner wall (110) and the powder-material-supporting plate assembly (112) in the process chamber (410) of the installation (400), the first seal (102) being spaced apart from the second seal (104) such that, when the intermediate space (116) is sealed between the process chamber inner wall (110) and the plate assembly (112) by means of the first seal (102) and the second seal (104), a channel (106) is formed between the first seal (102) and the second seal (104) at an edge of the seal system (110).
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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
29.
METHOD AND DEVICE FOR PRODUCING A MULTI-MATERIAL WORKPIECE
In a method for producing a three-dimensional workpiece (12), a first raw-material powder (50) is deposited on a substrate (18) in order to produce a raw-material-powder layer consisting of the first raw-material powder (50). The raw-material-powder layer consisting of the first raw-material powder (50) is selectively irradiated with electromagnetic radiation or particle radiation in order to produce a solidified first workpiece-layer portion (52) from the first raw-material powder (50). Non-solidified first raw-material powder (50) is subsequently removed from the substrate (18). In the next step, a second raw-material powder (54) is deposited on the substrate (18) in order to produce, adjacently to the first workpiece-layer portion (52), a raw-material-powder-layer portion consisting of the second raw-material powder (54). The raw-material-powder-layer portion is selectively irradiated with electromagnetic radiation or particle radiation in order to produce, adjacently to the first workpiece-layer portion (52), a solidified second workpiece-layer portion (56) from the second raw-material powder (54). The non-solidified second raw-material powder (54) is heated in order to produce, adjacently to the first workpiece-layer portion (52) and the second workpiece-layer portion (56), an interconnected porous sintered-layer portion (58) from the second raw-material powder (54).
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B28B 1/00 - Producing shaped articles from the material
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/188 - Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
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 40/20 - Post-treatment, e.g. curing, coating or polishing
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
B22F 3/24 - After-treatment of workpieces or articles
Coater (100) for an installation for manufacturing a three-dimensional workpiece by means of a generative layer-building process, wherein the coater (100) comprises: a powder feed (302), which is designed to feed powdered material (304) to a carrier (306), and a pivotable closing mechanism (102), which is designed to close an opening (308) of the powder feed (302) in a first position of the pivotable closing mechanism (102), in order to prevent feeding of the powdered material (304), wherein the opening (308) of the powder feed (302) is not closed by the pivotable closing mechanism (102) in a second position of the pivotable closing mechanism (102), in order not to prevent feeding of the powdered material (304) by the pivotable closing mechanism (102), wherein the coater (100) is designed such that, when it travels over the carrier (306), it interacts with a first carrier element (502) of the carrier (306) and/or a first base element and/or a first wall element in such a way that the pivotable closing mechanism (102) goes over from the first position into the second position, and/or it interacts with the first carrier element and/or the first base element and/or the first wall element and/or a second carrier element of the carrier and/or a second base element and/or a second wall element in such a way that the pivotable closing mechanism (102) goes over from the second position into the first position.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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
31.
APPARATUS AND METHOD FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
An apparatus for producing a three-dimensional work piece is provided. The apparatus comprises an irradiation unit comprising at least one scanning unit configured to scan a radiation beam over an uppermost layer of raw material powder to pre-determined sites of the uppermost layer of the raw material powder in order to solidify the raw material powder at the predetermined sites. An axis corresponding to the radiation beam when it impinges on the uppermost layer of raw material powder at an angle of 90° is defined as a central axis for the scanning unit. The apparatus further comprises a control unit configured to receive work piece data indicative of at least one layer of the three-dimensional work piece to be produced, and assign at least a part of a contour of the layer of the three-dimensional work piece to the at least one scanning unit. According to a first aspect, the control unit is configured to generate control data for controlling the irradiation unit, the control data defining a scan strategy of the radiation beam such that for more than 50 % of a predefined length, the radiation beam moves away from the central axis, the predefined length being defined as a length the radiation beam moves along the contour assigned to the at least one scanning unit, excluding sections concentric with regard to the central axis. Further, corresponding methods and computer program products are provided.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
We describe an apparatus for producing a three-dimensional workpiece, the apparatus comprising: a process chamber for receiving a material from which the three- dimensional workpiece is producible using an additive layer manufacturing technique, wherein the process chamber comprises a translucent window; an irradiation device for irradiating, through the translucent window, the material for producing the three- dimensional workpiece; and an enclosure arranged between the translucent window of the process chamber and the irradiation device, wherein at least a part of the enclosure is translucent for an irradiation beam stemming from the irradiation device to travel from the irradiation device through the enclosure to the material for producing the three-dimensional workpiece, wherein the enclosure comprises an inlet and an outlet, and wherein the apparatus is configured to control a flow of a fluid through the enclosure via the inlet and the outlet.
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 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B23K 26/282 - Seam welding of curved planar seams of tube sections
We describe a calibration method for calibrating one or more optical elements of an additive layer manufacturing apparatus useable for producing a three-dimensional workpiece, the method comprising: projecting, using the one or more optical elements, an optical pattern onto a material in order to prepare, from said material, solidified material layers using an additive layer manufacturing technique to form a test sample; determining a geometry of the test sample; comparing the determined geometry with a nominal geometry to generate calibration data; and calibrating the one or more optical elements using said calibration data.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/386 - Data acquisition or data processing for additive manufacturing
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B33Y 40/00 - Auxiliary operations or equipment, e.g. for material handling
B33Y 50/00 - Data acquisition or data processing for additive manufacturing
34.
CONTROL METHOD, CONTROL DEVICE AND PRODUCTION APPARATUS
The invention relates to a control method for controlling a multi-beam apparatus having one or more beam sources for producing a plurality of beams of a system for manufacturing a three-dimensional workpiece by means of a generative layer construction method, in which method a material that can be solidified in order to manufacture the three-dimensional workpiece is applied in layers to a surface of a carrier and the material that can be solidified is solidified by the plurality of beams in a respective layer at points of incidence of the plurality of beams on the material that can be solidified, wherein the points of incidence of the beams for solidifying selective regions of the layers of the material that can be solidified in order to manufacture the three-dimensional workpiece are each controlled substantially against a gas flow direction of a gas flow over the surface of the carrier; wherein the control method comprises: (a) dividing the material to be solidified in the respective layer into at least two sections, wherein two of the at least two sections extend in the gas flow direction of the gas flow prevailing over the two of the at least two sections in succession at least in part, (b) dividing at least one of the two of the at least two sections into at least two surface pieces, (c) assigning each of the surface pieces to exactly one specific beam, which solidifies the material to be solidified in the assigned surface piece, (d) controlling the points of incidence of the beams such that, at at least one point in time during an exposure of the material to be solidified, the material to be solidified is solidified in at least two surface pieces, and a network consisting of straight lines extending between each center point of the points of incidence to every other center point of the points of incidence, at no point in time during the exposure, in which all center points of the points of incidence are located outside of a predetermined distance from each other, has a straight line parallel to the gas flow direction of the gas flow prevailing over the two of the at least two sections.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B23K 26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
B23K 26/12 - Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
B23K 26/142 - 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 for the removal of by-products
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 26/16 - Removal of by-products, e.g. particles or vapours produced during treatment of a workpiece
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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
35.
DEVICE AND METHOD FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE
We describe a process chamber, an apparatus, a modular system, a method, a safety device, a positioning system and a system for producing a three-dimensional workpiece and/or for use thereof when producing a three-dimensional workpiece. The process chamber for producing the three-dimensional workpiece via an additive layer construction method comprises: a material supply unit comprising a substantially ring-like shaped end portion at a first side of the process chamber, wherein the material supply unit is adapted to supply, via the end portion, material to a carrier on which the material is to be processed by the process chamber for producing the three-dimensional workpiece, and an opening at the first side of the process chamber for processing, by the process chamber, the material supplied on the carrier in order to produce the three-dimensional workpiece, wherein the substantially ring-like shaped end portion surrounds the opening.
B23K 26/08 - Devices involving relative movement between laser beam and workpiece
B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
B23K 26/12 - Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
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 26/142 - 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 for the removal of by-products
B23K 26/16 - Removal of by-products, e.g. particles or vapours produced during treatment of a workpiece
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
B33Y 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
36.
POWDER APPLICATION DEVICE, METHOD FOR OPERATING A POWDER APPLICATION DEVICE, AND SYSTEM FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE
The invention relates to a powder application device (10) for use in a system (100) for producing a three-dimensional workpiece by means of an additive layering method, the powder application device comprising a distribution element (12). The distribution element (12) is movable over a surface of a support (116) in order to apply a raw material powder onto the surface of the support (116) to produce a workpiece by means of an additive layering method. The powder application device (10) further comprises a powder carrier (16), which is movable over a support plane (E) and is provided with a surface profile (22) in the region of a surface (20) facing the support plane (E). The surface profile (20) comprises a carrying element (24a, 24b, 24c) and a through channel (26a, 26b, 26c). The carrying element (24a, 24b, 24c) and the through channel (26a, 26b, 26c) are shaped and arranged such that, when the powder carrier (16) is moved over the support plane (E) in a first movement direction (R1), pulverulent material deposited on the support plane (E) in front of the powder carrier (16), viewed in relation to the movement of the powder carrier (16) over the support plane (E), is carried by the carrying element (24a, 24b, 24c), and when the powder carrier (16) is moved over the support plane (E) in a second movement direction (R2), which is opposite the first movement direction (R1), said pulverulent material is guided through the through channel (26a, 26b, 26c).
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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
37.
METHOD AND DEVICE FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE
The invention relates to a method for producing a three-dimensional workpiece. The method comprises irradiating a raw material layer with a laser beam, wherein a melt bath is produced at a point at which the laser beam impinges on the raw material layer, changing a position of the laser beam on the raw material layer with the aid of a first diverting unit and changing the position of the laser beam on the raw material layer with the aid of a second diverting unit. The second diverting unit is designed to divert the position of the laser beam with a greater acceleration than a maximum possible acceleration of a diversion by the first diverting unit. The invention also relates to a device for producing a three-dimensional workpiece.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
B33Y 50/00 - Data acquisition or data processing for additive manufacturing
38.
METHOD FOR ALIGNING A MULTI BEAM IRRADIATION SYSTEM
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
H01J 37/317 - Electron-beam or ion-beam tubes for localised treatment of objects for changing properties of the objects or for applying thin layers thereon, e.g. ion implantation
G05B 19/401 - 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 measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
A three-dimensional printing system having a light beam radiating unit is provided, which radiates a light beam onto the powder layer to be sintered or melted, solidifying the powder, a scanning mechanism which redirects and focuses the light beam in a three-dimensional space, a cover that moves integrally with the scanning unit of the light beam, wherein an inlet nozzle and an exhaust manifold ensure inert atmosphere to the process, a powder delivery unit that supplies this material over the object construction area; a powder leveling device leveling the powder delivered from the powder delivery unit to form a powder layer, a powder supply unit for storing and metering material for the delivery unit, constituting a module independent from the system.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
B33Y 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
40.
DEVICE AND METHOD FOR CALIBRATING AN IRRADIATION SYSTEM OF AN APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
A device (10) for calibrating an irradiation system (12) of an apparatus (14) for producing a three-dimensional work piece is suggested, the irradiation system (12) comprising a first irradiation unit (16) for selectively irradiating a first irradiation beam (18) along a first operating axis (20) onto an irradiation plane (22) and a second irradiation unit (24) for selectively irradiating a second irradiation beam (26) along a second operating axis (28) onto the irradiation plane (22), wherein the device (10) comprises: control unit (30) adapted to control the first irradiation unit (16) so as to irradiate the first irradiation beam (18) onto the irradiation plane (22) according to an irradiation pattern (32) and to control the second irradiation unit (24) so as to displace the second operating axis (28) relative to the irradiation plane (22) such that the second operating axis (28) traverses the irradiation pattern (32) produced by the first irradiation unit (16) onto the irradiation plane (22); and a detecting unit (34) adapted to detect process emissions emitted from a region of an impingement point (36) on the irradiation plane (22) at which the second operating axis (28) of the second irradiation unit (24) passes the irradiation plane (22) and to output signals indicative of the detected process emissions to the control unit (30); and wherein the control unit (30) is further adapted to determine a position (X1...n, Y1...n) of the irradiation pattern (32) produced by the first irradiation unit (16) on the irradiation plane (22); determine a position (X's1, Y's1) of at least one intersection point (38) between the irradiation pattern (22) produced by the first irradiation unit (16) and the second operating axis (28) of the second irradiation unit (24) based on the signals output by the detecting unit (34); and calibrate the irradiation system (12) based on the determined position (X1...n, Y1...n) of the irradiation pattern (32) produced by the first irradiation unit (16) and the determined position (X's1, Y's1) of the at least one intersection point.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
41.
ADDITIVE MANUFACTURING APPARATUS AND METHOD FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE WITH MULTIPLE LASER SUB-BEAMS FROM A SPATIAL LIGHT MODULATOR SPLITTING A SINGLE LASER SOURCE
An apparatus for producing a three-dimensional work piece is provided. The apparatus comprises a carrier configured to receive multiple layers of raw material and an irradiation unit configured to direct at least two laser sub-beams to predetermined sites of an uppermost layer of the raw material in order to solidify the raw material at the predetermined sites. The irradiation unit comprises a spatial light modulator arranged in the beam path of a laser beam and configured to split the laser beam into at least two laser sub-beams and a scanning unit for directing the at least two laser sub-beams to predetermined sites of the uppermost layer of the raw material. The apparatus further comprises a control unit configured to analyze three- dimensional work piece data of a work piece to be built and thereby analyze a geometry of a layer of said work piece to be built, generate control data for controlling the irradiation unit, wherein the control data comprises information indicative of a number of sub-beams generated by the spatial light modulator, and control the irradiation unit to perform irradiation of the raw material according to the control data. Further, a method for producing a three-dimensional work piece and a corresponding computer program product are provided.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
An apparatus for producing a three-dimensional work piece is provided. The apparatus comprises a carrier configured to receive multiple layers of raw material powder, an irradiation unit configured to direct a radiation beam to predetermined sites of an uppermost layer of the raw material powder in order to solidify the raw material powder at the predetermined sites, a process chamber defining a volume through which the radiation beam is directed from the irradiation unit to the raw material powder, and a support structure provided outside the process chamber and supporting the irradiation unit.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/232 - Driving means for motion along the axis orthogonal to the plane of a layer
An apparatus for producing three-dimensional work pieces is provided. The apparatus comprises a carrier configured to receive multiple layers of raw material, and an irradiation unit configured to generate a radiation beam and to direct the radiation beam to predetermined sites of an uppermost layer of the raw material in order to solidify the raw material at the predetermined sites. The irradiation unit comprises a radiation source configured to generate the radiation beam, a first scanning unit configured to receive the radiation beam and to scan the radiation beam over a first irradiation area of the uppermost layer of the raw material, a second scanning unit configured to receive the radiation beam and to scan the radiation beam over a second irradiation area of the uppermost layer of the raw material, and a switching unit configured to direct the radiation beam generated by the radiation source to the first scanning unit or the second scanning unit. The apparatus further comprises a control unit configured to perform control of the switching unit to switch from a first switching state, in which the radiation beam is directed to the first scanning unit and not to the second scanning unit, to a second switching state, in which the radiation beam is directed to the second scanning unit and not to the first scanning unit.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/291 - Arrangements for irradiation for operating globally, e.g. together with selectively applied activators or inhibitors
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
G02F 1/29 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
44.
APPARATUS AND METHOD FOR PRODUCING LARGE WORKPIECES BY MEANS OF A MOBILE PRODUCTION UNIT
The invention relates to an apparatus (10) for producing a three-dimensional workpiece, comprising: a carrier (12) adapted to receive material (14) for producing the workpiece; at least one mobile production unit (24), a moving unit (18) that is adapted to move the mobile production unit (24) relative to the carrier (12) so as to position the mobile production unit (24) oppositely to different sections of the carrier (12); a sensing unit that is adapted to generate sensor signals relating to a relative arrangement of the mobile production unit (24) and the carrier (12); and a control unit that is configured to, in addition to the positioning of the mobile production unit (24) via the moving unit (18), provide at least one fine positioning function to compensate for an offset from a desired relative arrangement of the mobile production unit (24) and the carrier (18) based on the sensor signals generated by the sensing unit. The invention further relates to a method for producing a three-dimensional workpiece.
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
B29C 64/371 - Conditioning of environment using an environment other than air, e.g. inert gas
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
09 - Scientific and electric apparatus and instruments
Goods & Services
DOWNLOADABLE OR RECORDED COMPUTER SOFTWARE DESIGNED FOR USE IN MANUFACTURING, NAMELY, FOR USE IN METAL BASED 3D PRINTING; DOWNLOADABLE OR RECORDED COMPUTER-AIDED MANUFACTURING SOFTWARE, NAMELY, FOR METAL BASED 3D PRINTING; DOWNLOADABLE OR RECORDED COMPUTER SOFTWARE, NAMELY, FOR METAL BASED 3D PRINTING
46.
DEVICE AND METHOD FOR PRODUCING THREE-DIMENSIONAL WORKPIECES
The invention relates to a device for producing three-dimensional workpieces. The device comprises a carrier for receiving raw material powder and a radiation unit for selectively radiating the raw material powder applied to the carrier with electromagnetic radiation or particle radiation in order to produce on the carrier a workpiece made of the raw material powder by a generative layering construction process. The device also comprises a vertical movement means, which is designed to move the radiation unit vertically relative to the carrier, and a cylinder construction wall, which extends substantially vertically and which constitutes a lateral delimitation for the raw material powder applied to the carrier, wherein the cylinder construction wall is designed to increase its vertical height during the construction process.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
47.
DEVICE AND METHOD FOR PRODUCING THREE-DIMENSIONAL WORKPIECES
The invention relates to a device (1) for producing three-dimensional workpieces (15), comprising a support (7) for receiving raw material powder (9); a construction chamber wall (11, 11a, 11b) which extend substantially vertically and which is designed to laterally delimit and support the raw material powder (9) applied onto the support (7); an irradiation unit (17) for selectively irradiating the raw material powder (9) applied onto the support (7) with electromagnetic radiation or particle radiation in order to produce a workpiece (15) made of the raw material powder (9) on the support (7) using a generative layer construction method, wherein the irradiation unit (17) comprises at least one optical element; and a vertical movement device (31) which is designed to move the irradiation unit (17) vertically relative to the support (7). The construction chamber wall (11, 11a, 11b) and the support (7) are designed to be connected together in a stationary manner during the vertical movement of the irradiation unit (17) such that the vertical movement runs relative to the support (7) and relative to the construction chamber wall (11, 11a, 11b).
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
48.
DEVICE AND METHOD FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE
The invention relates to a device (10) for producing a three-dimensional workpiece by carrying out an additive layering process, wherein the device (10) comprises: - a build area (17) that is configured to receive a raw material powder layer; - a powder application device (14) that is configured to deploy the raw material powder layer onto the build area (17); - an irradiation system (20) that is configured to selectively irradiate the raw material powder layer on the build area (17); wherein the device (10) is configured to provide at least one gas flow (48) that is directed along an axis (A) extending from a first edge region (44) of the build area (17) towards a second edge region (46) of the build area (17); and wherein the device (10) comprises at least one gas flow guide element (36) that is configured to divert at least a part of the gas flow (48) away from the build area (17) before said gas flow (48) reaches the second edge region (46); wherein the gas flow guide element (36) comprises a gas supply portion (56) that is configured to supply a fresh gas flow (54) along the build area (17). The invention also concerns a method for producing a three-dimensional workpiece.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/171 - Processes of additive manufacturing specially adapted for manufacturing multiple 3D objects
B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
The invention relates to a device (10) for the layered production of a three-dimensional workpiece, comprising: a construction space (30) in which the workpiece can be produced by selectively hardening raw material powder layers; an irradiating system (20) designed to selectively harden the raw material powder layers in the construction space (30) by emitting a machining beam; at least one calibrating structure (36); a sensor arrangement (25) designed to detect an irradiation of the calibrating structure (36) by the irradiating system (20); and a control unit (26) designed to calibrate the irradiating system (20) on the basis of detection information of the sensor arrangement, the calibrating structure (36) being arranged outside the construction space (30). The invention also relates to a method for calibrating an irradiating system of a device for the layered production of a three-dimensional workpiece.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B23K 26/04 - Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
B29C 64/393 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B29C 64/268 - Arrangements for irradiation using electron beams [EB]
G05B 19/401 - 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 measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
G01S 5/16 - Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
50.
METHOD AND DEVICE FOR CONTROLLING A JETTING SYSTEM FOR PRODUCING WORKPIECES
The invention relates to a method for controlling a jetting system (20), the jetting system (20) being used in a device (10) for the additive manufacturing of three-dimensional workpieces and comprising at least three jetting units (22a-d, 50), the method comprising the following steps: a) defining a jetting region (30a-d) for each of the jetting units (22a-d, 50), the jetting regions (30a-d) each comprising a portion of a jetting plane (28) which extends parallel to a support (16) of the device (10), and the jetting regions (30a-d) being defined such that they overlap in a common overlap region (34); b) jetting a raw material powder layer on the support (16) to produce a workpiece layer; c) arranging a further raw material powder layer on the already jetted raw material powder layer to produce a further workpiece layer. d) The invention also relates to a device for performing this method.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
51.
METHOD, USE AND APPARATUS FOR PRODUCING A SINGLE-CRYSTALLINE WORK PIECE
A method for producing or repairing a three-dimensional work piece, the method comprising the following steps: - providing at least one substrate (15); - depositing a first layer of a raw material powder onto the substrate (15); and - irradiating selected areas of the deposited raw material powder layer with an electromagnetic or particle radiation beam (22) in a site selective manner in accordance with an irradiation pattern which corresponds to a geometry of at least part of a layer of the three-dimensional work piece to be produced, wherein - the irradiation is controlled so as to produce a metallurgical bond between the substrate (15) and the raw material powder layer deposited thereon. Moreover, a use and apparatus are likewise disclosed.
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
An apparatus (10) comprises a process chamber (12) accommodating a carrier (14) for receiving a raw material powder. An irradiation device (16) of the apparatus (10) is configured to selectively irradiate electromagnetic or particle radiation onto the raw material powder on the carrier (14) in order to produce a work piece by an additive layer construction method, wherein a transmission element (22) allows the transmission of the electromagnetic or particle radiation into the process chamber (12). The apparatus (10) further comprises a gas inlet (26) and a gas outlet (32) for supplying and discharging gas to and from the process chamber (12) which are configured to generate a protective gas stream (Fl, F2) for protecting the transmission element (22) from being contaminated by impurities present in the process chamber (12). The gas inlet (26) comprises a gas permeable, porous component (36) forming a gas inlet area (A).
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B29C 67/00 - Shaping techniques not covered by groups , or
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
53.
PRODUCTION OF THREE-DIMENSIONAL WORKPIECES BY MEANS OF A PLURALITY OF IRRADIATION UNITS
The invention relates to a device (10) for producing three-dimensional workpieces, the device (10) comprising: a structural surface (14) designed to receive a moulding compound (18); and an irradiation arrangement (22) designed to selectively irradiate the moulding compound (18) on the structural surface (14) with electromagnetic radiation, in order to produce a workpiece by means of generative layer construction, where the irradiation device (22) comprises a plurality of irradiation units (28), the irradiation units (28) being designed to irradiate an individual region (32) of the structural surface respectively associated wth the irradiation units, and where the beams emitted by the irradiation units (28) respectively have a cross-sectional surface corresponding to between approx. 2% and approx. 170% of the surface of the respectively associated individual region (32). The invention also relates to the use of such a device (10) and to a method for producing three-dimensional workpieces by means of such a device (10).
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
A powder delivery device for providing raw material powder to a powder application device of a powder bed fusion apparatus is provided. The powder delivery device comprises a powder supply section configured to receive raw material powder, the powder supply section comprising an outlet for providing the raw material powder to the powder application device. The powder delivery device further comprises a first physical parameter determining unit arranged at a first location of the powder supply section and configured to determine a first physical parameter in the powder supply section, a control unit configured to determine whether the first physical parameter meets a first tolerance criterion, and a powder treatment unit, wherein the control section is configured to instruct the powder treatment unit to perform a powder treatment in case it determines that the first physical parameter does not meet the first tolerance criterion.
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
B29C 64/386 - Data acquisition or data processing for additive manufacturing
An apparatus (10) for producing a three-dimensional workpiece is provided, the apparatus (10) comprising: - a carrier (14) for receiving a raw material powder (18), - at least a first irradiation device (26) for selectively irradiating an electromagnetic or particle radiation beam (B) onto raw material powder (18) being deposited on at least one build area (16) of the carrier (14) in order to produce a workpiece made of said raw material powder (18) by an additive layer construction method, and - at least a first and a second powder application device (20) being configured to simultaneously deposit raw material powder (18) onto the same build area (16) to produce a sequence of raw material powder layers on top of one another, wherein the irradiation device (26) is configured to irradiate a section (S1-S4) of the build area (16) between the powder application devices (20).
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B28B 1/00 - Producing shaped articles from the material
B29C 67/00 - Shaping techniques not covered by groups , or
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
56.
APPARATUS AND METHOD FOR ASSOCIATING A POSITION IN A CONSTRUCTION DATA SET WITH A POSITION IN A BUILDING SECTION OF THE APPARATUS
An apparatus for associating a position in a construction data set with a position in a building section of the apparatus comprises a building section for generating a three- dimensional work piece, configured to receive a base element comprising a boundary surface. The apparatus further comprises a irradiation unit configured to generate a radiation beam and to scan the radiation beam over a predefined scanning field, wherein the predefined scanning field comprises at least part of the boundary surface of the base element. The apparatus further comprises a detecting unit configured to detect electromagnetic radiation intensity of electromagnetic radiation emitted at a spot position of the radiation beam, and a controller. The controller is configured to associate the detected electromagnetic radiation intensity with position information indicative of a current position of the radiation beam, determine a position of the boundary surface of the base element with regard to the scanning field, based on the detected electromagnetic radiation intensity and based on the position information, and associate a position in a construction data set with a position in the building section, based on the determined position of the boundary surface.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 50/00 - Data acquisition or data processing for additive manufacturing
G05B 19/4097 - 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 using design data to control NC machines, e.g. CAD/CAM
B23K 26/03 - Observing, e.g. monitoring, the workpiece
G05B 19/409 - 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 panel details, by setting parameters
B22F 7/02 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers
G01N 21/88 - Investigating the presence of flaws, defects or contamination
B23Q 17/24 - Arrangements for indicating or measuring on machine tools using optics
57.
DEVICE AND METHOD FOR CALIBRATING AN IRRADIATION SYSTEM OF AN APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
A device (48) for calibrating an irradiation system (18) of an apparatus (10) for producing a three-dimensional work piece comprises a control unit (50) adapted to control the irradiation system (18) so as to irradiate a radiation beam (22; 22a, 22b) onto an irradiation plane (52) according to a calibration pattern. The device (48) further comprises a sensor arrangement (56) adapted to be arranged in the irradiation plane (52) and to output signals to the control unit (50) in response to being irradiated with the radiation beam (22; 22a, 22b) according to the calibration pattern. The control unit (50) further is adapted to generate a digital image of an actual irradiation pattern produced by the radiation beam (22; 22a, 22b) incident on the sensor arrangement (56) based on the signals output by the sensor arrangement (56), to compare the digital image of the actual irradiation pattern with a digital image of a reference pattern so as to determine a deviation between the actual irradiation pattern and the reference pattern, and to calibrate the irradiation system (18) based on the determined deviation between the actual irradiation pattern and the reference pattern.
B29C 67/00 - Shaping techniques not covered by groups , or
G05B 19/401 - 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 measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
58.
Contact arrangement for use in an apparatus for producing three-dimensional work pieces
A contact arrangement (44) for use in an apparatus (10) for producing three-dimensional work pieces by irradiating layers of a raw material powder with electromagnetic or particle radiation, the contact arrangement (44) comprises a replaceable building chamber (20) adapted to receive a work piece generated in the apparatus (10) by an additive layering process and a building chamber support element (38) adapted to support the replaceable building chamber (20). A first contact element (46) is fastened to the replaceable building chamber (20) and comprises at least one first electrical conductor element (48), the first electrical conductor element (48) being provided with a first planar conductor surface (50). A second contact element (52) is fastened to the building chamber support element (38) and comprises at least one second electrical conductor element (54), the second electrical conductor element (54) being provided with a second planar conductor surface (56). The first planar conductor surface (50) provided on the first electrical conductor element (48) of the first contact element (46) and the second planar conductor surface (56) provided on the second electrical conductor element (52) of the second contact element (52) are adapted to interact with each other so as to establish an electrical contact between the replaceable building chamber (20) and the building chamber support element (38) when the replaceable building chamber (20) is supported on the building chamber support element (38).
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B23K 37/04 - Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the other main groups of this subclass for holding or positioning work
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 7/02 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers
B23K 9/04 - Welding for other purposes than joining, e.g. built-up welding
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/20 - Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering - Details thereof or accessories therefor
06 - Common metals and ores; objects made of metal
35 - Advertising and business services
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Alloyed steels, alloyed iron, alloys of metal, alloys of nickel, aluminum alloys, [ carbon steels, ] common metal alloys in powder form, ferroalloys for further manufacture, iron alloys, iron carbon alloys, metal and metal alloys, [ molybdenum iron, ] non-ferrous metals, non-ferrous metal alloys, common metals in powder form, stainless steel, steel, steel alloys, titanium and its alloys Wholesale and retail store services featuring [ additive alloys for the production of iron, additive alloys for the production of steel, ] alloyed steels, alloyed iron, alloys of common metal, [ alloys of metal containing calcium and aluminum, ] alloys of metal, alloys of nickel, [ alloys used for casting, aluminum, aluminum alloys, bar steel,] bars made of titanium, bars of metal, [ brazing alloys, bronze, cadmium,] carbon steels, [ cast iron, cast steel, casting alloys, chrome iron, chromium, cobalt-chrome,] unprocessed cobalt, common metal alloys, common metals, common metals and their alloys including stainless steel, [copper unwrought or semi-wrought, ferrochrome,] ferroalloys, [ferrotitanium,] ferrous metals, [German silver, germanium, glucinium, hafnium, indium,] iron, iron alloys, iron carbon alloys, [lead-tin alloys, limonite, magnesium, magnesium alloys, manganese, metals, molybdenum, molybdenum iron,] nickel, nickel alloys, [nickel-silver, nickel-chromium-based alloys, niobium, non-ferrous metals,] non-ferrous metal alloys, [plated steels,] Metals in powder form, [pyrophoric metals,] sheet iron, sheet metal, [sheet metal for roofing,] sheet steel, [sheet piles of metal,] sheets of aluminum, sheets of metal, sheets of metal including those from alloy steel and titanium, [silicon iron, Metal soil vents,] stainless steel,steel, steel alloys, [steel unwrought or semi-wrought, metal tantalum, tantalum and its alloys,] tin and its alloys, titanium and its alloys,[ titanium iron, tombac,] unprocessed and semi-processed materials of metal, [not specified for use;] wholesale and retail store services featuring machine parts, in particular machine parts made of metal, [ceramic,] plastic or composite material; wholesale and retail store services featuring machines for processing raw materials, namely, powder material in the nature of metal powder, ceramic powder, plastic powder and a composite material powder; wholesale and retail store services featuring machines for processing raw materials using a laser; [wholesale and retail store services featuring casting machines, namely, vacuum casting machines and investment casting machines;] wholesale and retail store services featuring scientific, electric and optical control devices for controlling machines for processing a raw material, namely, powder material in the nature of metal powder, ceramic powder, plastic powder and a composite material powder; [wholesale and retail store services featuring scientific, electric and optical control devices for controlling machines for processing a raw material using a laser and for controlling casting machines, namely, casting machines and investment casting machines;] wholesale and retail store services featuring scientific, electric and optical measuring devices for use in machines for processing a raw material, namely, powder material in the nature of metal powder, ceramic powder, plastic powder and a composite material powder, for use in machines for processing a raw material using a laser [, and for use in casting machines, namely, vacuum casting machines and investment casting machines; wholesale and retail store services featuring computer software for controlling machines for processing a raw material, namely, powder material in the nature of metal powder, ceramic powder, plastic powder and a composite material powder, for controlling machines for processing a raw material using a laser, and for controlling casting machines, namely, vacuum casting machines and investment casting machines; wholesale and retail store services featuring prerecorded magnetic data carriers featuring computer software for controlling machines for processing a raw material, namely, powder material in the nature of metal powder, ceramic powder, plastic powder and a composite material powder, for controlling machines for processing a raw material using a laser, for controlling casting machines, namely, vacuum casting machines and investment casting machines, and for controlling machines based on 3D computer-aided design (CAD) data] Services for cleaning by means of sanding three-dimensional workpieces of complex shapes, made of metal, ceramic, plastic and/or composite material manufactured or repaired by a laser sintering or layering process and used for the production of prototypes, tools, replacement parts, automotive parts, aerospace parts, medical devices; [services for cleaning by means of scouring three-dimensional workpieces of complex shapes, made of metal, ceramic, plastic and/or composite material by a laser sintering or layering process or by a manufacturing process containing laser sintering or laser layering; services for cleaning by water jetting three-dimensional workpieces of complex shapes, made of metal, ceramic, plastic and/or composite material manufactured or repaired by a laser sintering or layering process or by a manufacturing process containing laser sintering or laser layering; diaper cleaning, providing information in the field of repair of laser melting machines for processing metal powders, ceramic powders, plastic powders, plastic powders and/or composite material powders, casting machines, laser sintering machines, three-dimensional workpieces of complex shapes, made of metal, ceramic, plastic and/or composite material; installation, cleaning, repair, and maintenance of three dimensional workpieces of complex shapes, made of metal, ceramic, plastic and/or composite material by a laser sintering or layering process and used for the production of prototypes, tools, replacement parts, automotive parts, aerospace parts, medical devices;] installation, cleaning, repair, and maintenance of laser melting machines for processing raw materials, namely, powder materials, namely, metal powders, [ceramic powders, plastic powders and/or composite material powders; installation, cleaning, repair, and maintenance of casting machines, namely, vacuum casting machines, investment casting machines;] installation, cleaning, repair, and maintenance of laser sintering machines for processing raw materials, namely, powder materials, namely, metal powders, [ceramic powders, plastic powders and/or composite material powders;] installation, cleaning, repair, and maintenance of machine tools for use in the aforementioned machines for the processing of the aforementioned raw materials, for use in control devices, namely, electric, scientific, and optic control devices for controlling machines for processing raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, for use in laser melting and laser sintering machines for processing raw materials, [and for use in casting machines;] installation, cleaning, repair, and maintenance of measuring devices, namely, scientific, electric or optic measuring devices for use in machines for processing raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, for use in laser melting and laser sintering machines for processing raw materials[ , and for use in casting machines ] Installation, cleaning, repair, rental and maintenance of computer software for controlling machines for the processing of raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, for laser melting and laser sintering machines for the processing of raw materials, [ and for casting machines; ] installation, cleaning, repair, rental and maintenance of computer software for controlling machines for the processing of raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, for laser melting and laser sintering machines for the processing of raw materials, [ for casting machines ] and for machines based on 3D CAD data
60.
APPARATUS AND METHOD FOR PRODUCING WORK PIECES HAVING A TAILORED MICROSTRUCTURE
An apparatus (10) for producing three-dimensional work pieces comprises a carrier (16), a powder application device (14) for applying a raw material powder onto the carrier (16), an irradiation device (18) for selectively irradiating electromagnetic or particle radiation onto the raw material powder applied onto the carrier (16), and a control unit (38) which is adapted to control the operation of the powder application device (14) and the irradiation device (18) in dependence on the crystallization behavior of the raw material powder, in order to tailor the microstructure of a work piece made of said raw material powder by a additive layer construction method.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Three dimensional workpieces of complex shapes, made of metal, ceramic, [ plastic ] and/or composite material by a laser sintering or layering process and used for the production of prototypes, tools, replacement parts, automotive parts, aerospace parts, medical devices; Laser melting machines for processing raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders; [ Casting machines, namely, vacuum casting machines, investment casting machines; ] laser sintering machines for processing raw materials, namely, powder materials, namely, metal powders, ceramic powders, [ plastic powders ] and/or composite material powders; machine tools for use in the aforementioned machines for the processing of the aforementioned raw materials, * none of the aforesaid goods being for use in machining metal surfaces and structures * Control devices, namely, electric, scientific, and optic control devices for controlling machines for processing raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, laser melting and laser sintering machines for processing raw materials, [ and casting machines; ] optic control devices for guiding and focusing a path of a laser beam; measuring devices, namely, scientific, electric or optic measuring devices for use in machines for processing raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, laser melting and laser sintering machines for processing raw materials, [ and casting machines; ] scientific apparatus, namely, sensing and signaling devices for measurement and quality control of materials processing by laser; computer software for controlling machines for the processing of raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, laser melting and laser sintering machines for the processing of raw materials, [ and casting machines; ] computer software for controlling machines based on 3D computer aided design (CAD) data; computer software for controlling machines for the processing of raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, laser melting and laser sintering machines for the processing of raw materials, [ casting machines and ] machines based on 3D CAD data, * none of the aforesaid goods being for use in machining metal surfaces and structures * [ Design and engineering in the field of machines for the processing of raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, casting machines, namely, vacuum casting machines, investment casting machines and machines for the processing of raw materials using a laser; developing computer software; designing computer software for use in controlling machines; application service provider, namely, developing and managing computer software for use in controlling machines for the processing of raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, machines for the processing of raw materials using a laser, casting machines and machines based on 3D CAD data; scientific research; industrial research in the field of machines for the processing of raw materials, namely, powder materials, namely, metal powders, ceramic powders, plastic powders and/or composite material powders, casting machines, namely, vacuum casting machines, investment casting machines and laser melting and laser sintering machines for the processing of raw materials, * none of the aforesaid services relating to machining metal surfaces and structures * ]
