公开(公告)号：US20210178473A1

公开(公告)日：2021-06-17

申请号：US16712619

申请日：2019-12-12

Applicant: ARCAM AB

Inventor： Kristofer Karlsson

IPC: B22F3/105 ,  B33Y30/00

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

公开(公告)号：US20210178472A1

公开(公告)日：2021-06-17

申请号：US16712597

申请日：2019-12-12

Applicant: ARCAM AB

Inventor： Kristofer Karlsson

IPC: B22F3/105 ,  B33Y40/00

Abstract: An additive manufacturing apparatus includes a process chamber housing with a process chamber. A powder storage vessel is in the process chamber. The powder storage vessel includes a vessel body including a powder storage volume, a floor including a powder delivery opening extending therethrough and a bottom cap including a powder delivery opening extending therethrough. In an open configuration, the powder delivery opening of the bottom cap is aligned with the powder delivery opening of the floor to allow powder material to flow from the powder storage vessel through the powder delivery openings. In a closed configuration, one or both of the vessel body and the bottom cap is rotated relative to the other to misalign the powder delivery openings and inhibit powder material from flowing from the powder storage vessel through the powder delivery openings.

公开(公告)号：US20210023793A1

公开(公告)日：2021-01-28

申请号：US16523492

申请日：2019-07-26

Applicant: ARCAM AB

Inventor： Björn Löfving ,  Kristofer Karlsson

IPC: B29C64/393 ,  B29C64/153 ,  B29C64/205 ,  B29C64/245 ,  B29C64/255 ,  B29C64/268

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：US11724316B2

公开(公告)日：2023-08-15

申请号：US17852759

申请日：2022-06-29

Applicant: Arcam AB

Inventor： Kristofer Karlsson

IPC: B33Y30/00 ,  B22F12/67 ,  B22F12/49 ,  B22F12/63 ,  B22F1/052 ,  B22F10/28 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y40/00

CPC classification number: B22F12/67 ,  B22F1/052 ,  B22F10/28 ,  B22F12/63 ,  B33Y30/00 ,  B22F12/49 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y50/02 ,  B22F2999/00 ,  B22F10/30 ,  B22F12/60

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：US20210023617A1

公开(公告)日：2021-01-28

申请号：US16523484

申请日：2019-07-26

Applicant: ARCAM AB

Inventor： Björn Löfving ,  Kristofer Karlsson

IPC: B22F3/105 ,  B29C64/153 ,  G06K9/32

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：US10583483B2

公开(公告)日：2020-03-10

申请号：US15268865

申请日：2016-09-19

Applicant: Arcam AB

Inventor： Kristofer Karlsson

IPC: B29C67/00 ,  B22F3/105 ,  B33Y10/00 ,  B33Y30/00 ,  B23K15/00 ,  B23K15/02 ,  B23K26/342 ,  B23K26/70 ,  B29C64/153 ,  B29C64/20 ,  B29C64/218 ,  B29C64/205 ,  B29C64/321 ,  B29C64/329 ,  B29C64/214 ,  B29C64/255 ,  B29C64/209 ,  B29C64/259 ,  B29L9/00

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

公开(公告)号：US20190262900A1

公开(公告)日：2019-08-29

申请号：US16266671

申请日：2019-02-04

Applicant: Arcam AB

Inventor： Kristofer Karlsson

IPC: B22F3/105 ,  B22F1/00

Abstract: Described is 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 said build chamber base body (2) is formed by at least two segments (4) telescopically coupled together.