公开(公告)号：US12090552B2

公开(公告)日：2024-09-17

申请号：US17079975

申请日：2019-02-26

Applicant: ARCAM AB

Inventor： Lars Löwgren ,  Kristofer Karlsson

IPC: B22F12/20 ,  B22F10/28 ,  B22F10/30 ,  B22F12/00 ,  B22F12/50 ,  B22F12/60 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F12/30 ,  B22F12/90

CPC classification number: B22F12/50 ,  B22F10/28 ,  B22F12/20 ,  B22F12/224 ,  B22F12/226 ,  B22F12/60 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F12/30 ,  B22F12/90 ,  B22F2999/00 ,  B22F12/60 ,  B22F12/10 ,  B22F12/20

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

公开(公告)号：US20210245253A1

公开(公告)日：2021-08-12

申请号：US17079975

申请日：2019-02-26

Applicant: ARCAM AB

Inventor： Lars Löwgren ,  Kristofer Karlsson

IPC: B22F12/20 ,  B22F10/28 ,  B22F10/30 ,  B22F12/50 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

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

公开(公告)号：US10800101B2

公开(公告)日：2020-10-13

申请号：US16266576

申请日：2019-02-04

Applicant: Arcam AB

Inventor： Kristofer Karlsson

IPC: B22F3/105 ,  B22F1/00 ,  B29C64/25 ,  B29C64/245 ,  B23K15/00 ,  B23K15/06 ,  B29C64/268 ,  B33Y30/00 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/153 ,  B33Y40/00 ,  B22F3/10 ,  F16B7/10 ,  B29C64/232 ,  F16B7/20

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

公开(公告)号：US20190299287A1

公开(公告)日：2019-10-03

申请号：US16266729

申请日：2019-02-04

Applicant: Arcam AB

Inventor： Kristofer Karlsson

IPC: B22F3/105 ,  B22F1/00

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

公开(公告)号：US12269092B2

公开(公告)日：2025-04-08

申请号：US17296590

申请日：2019-03-01

Applicant: Arcam AB

Inventor： Safdar Ali ,  Kristofer Karlsson

IPC: B22F10/85 ,  B22F10/28 ,  B22F10/368 ,  B22F12/41 ,  B22F12/44 ,  B33Y10/00 ,  H01J37/09 ,  H01J37/21 ,  H01J37/305 ,  B22F12/00 ,  B22F12/49 ,  B33Y30/00 ,  B33Y50/02

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

公开(公告)号：US11999102B2

公开(公告)日：2024-06-04

申请号：US18077381

申请日：2022-12-08

Applicant: Arcam AB

Inventor： Björn Löfving ,  Kristofer Karlsson

IPC: B29C64/153 ,  B22F10/00 ,  B22F10/28 ,  B22F10/37 ,  B22F10/85 ,  B22F12/60 ,  B22F12/67 ,  B22F12/90 ,  B33Y10/00 ,  G06V10/25 ,  B22F10/10 ,  B22F10/32 ,  B22F10/368 ,  B22F10/38 ,  B22F12/52 ,  B22F12/55 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C64/153 ,  B22F10/00 ,  B22F10/28 ,  B22F10/37 ,  B22F10/85 ,  B22F12/60 ,  B22F12/67 ,  B22F12/90 ,  B33Y10/00 ,  G06V10/25 ,  B22F10/10 ,  B22F10/32 ,  B22F10/368 ,  B22F10/38 ,  B22F12/52 ,  B22F12/55 ,  B33Y30/00 ,  B33Y50/02 ,  B22F2999/00 ,  B22F10/85 ,  B22F10/37 ,  B22F2203/03 ,  B22F2999/00 ,  B22F12/60 ,  B22F12/90 ,  B22F2203/11

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

公开(公告)号：US11541457B2

公开(公告)日：2023-01-03

申请号：US16523484

申请日：2019-07-26

Applicant: ARCAM AB

Inventor： Björn Löfving ,  Kristofer Karlsson

IPC: B29C67/00 ,  B22F10/00 ,  B29C64/153 ,  G06V10/25 ,  B33Y30/00 ,  B33Y50/02 ,  B22F10/10

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

公开(公告)号：US11338519B2

公开(公告)日：2022-05-24

申请号：US16523492

申请日：2019-07-26

Applicant: ARCAM AB

Inventor： Björn Löfving ,  Kristofer Karlsson

IPC: B29C64/393 ,  B29C64/153 ,  B29C64/245 ,  B29C64/255 ,  B29C64/268 ,  B29C64/205 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B22F10/85 ,  B29C64/386 ,  B22F12/30 ,  B22F12/50 ,  B22F10/28 ,  B22F10/80 ,  B22F10/37 ,  B22F12/90

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

公开(公告)号：US20220001452A1

公开(公告)日：2022-01-06

申请号：US17296590

申请日：2019-03-01

Applicant: Arcam AB

Inventor： Kristofer Karlsson ,  Safdar Ali

IPC: B22F10/368 ,  B22F10/28 ,  B22F10/85 ,  B22F12/41 ,  H01J37/21 ,  H01J37/305 ,  H01J37/09

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

公开(公告)号：US20190263063A1

公开(公告)日：2019-08-29

申请号：US16266828

申请日：2019-02-04

Applicant: Arcam AB

Inventor： Kristofer Karlsson

IPC: B29C64/25 ,  B29C64/245 ,  B23K15/00 ,  B22F3/105 ,  B23K15/06 ,  B29C64/153 ,  B29C64/268 ,  B33Y30/00 ,  B33Y10/00 ,  B33Y50/02

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