公开(公告)号：US11878348B2

公开(公告)日：2024-01-23

申请号：US17690298

申请日：2022-03-09

Applicant: JEOL Ltd.

Inventor： Taku Hisaki ,  Shinichi Kitamura ,  Takashi Sato ,  Ayumu Miyakita ,  Kozo Koiwa ,  Yohei Daino ,  Masahiko Kawakami ,  Nari Tsutagawa

IPC: B22F10/85 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F12/67 ,  B22F12/90 ,  B22F10/28

CPC classification number: B22F10/85 ,  B22F10/28 ,  B22F12/67 ,  B22F12/90 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A three-dimensional powder bed fusion additive manufacturing apparatus includes a powder application device that includes a squeegee and applies a powder material to a build plate to form a powder layer, a camera that photographs a manufactured surface of the powder layer, and a determination unit that determines whether powder application failure of the powder material has occurred using an image photographed by the camera while or immediately after the squeegee passes through the manufactured surface.

公开(公告)号：US11801558B2

公开(公告)日：2023-10-31

申请号：US17886781

申请日：2022-08-12

Applicant: JEOL Ltd.

Inventor： Tatsuo Naruse ,  Ayumu Miyakita ,  Yohei Daino

IPC: B22F10/322 ,  B22F12/20 ,  B22F10/47 ,  B22F12/30 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B22F10/322 ,  B22F10/47 ,  B22F12/20 ,  B22F12/30 ,  B22F2201/01 ,  B33Y10/00 ,  B33Y30/00

Abstract: A three-dimensional PBF-AM apparatus includes a stage on which a powder material is spread, and a tubular build box disposed in a state of surrounding the stage. The build box includes a side wall portion having a first tubular member surrounding the stage and a second tubular member surrounding the stage with the first tubular member interposed therebetween and forming a space with the first tubular member, and moreover, a vacuum heat insulating layer can be formed inside the side wall portion by vacuuming the space.

公开(公告)号：US20230014614A1

公开(公告)日：2023-01-19

申请号：US17865632

申请日：2022-07-15

Applicant: JEOL Ltd.

Inventor： Nari Tsutagawa ,  Takashi Sato ,  Yohei Daino ,  Kozo Koiwa ,  Yuhei Kaneko ,  Masahiko Kawakami

IPC: B22F10/362 ,  B22F12/41 ,  B22F12/49 ,  B22F12/50 ,  B22F10/28 ,  B22F10/366 ,  B33Y10/00 ,  B33Y30/00

Abstract: An apparatus includes a build plate, a powder application apparatus that applies metal powder onto the build plate to form a powder layer, a beam irradiation apparatus that irradiates the powder layer with an electron beam, and a control unit that controls the powder application apparatus and the beam irradiation apparatus. When the powder layer is preheated by irradiation with the electron beam, the control unit sets a beam size and an irradiation position of the electron beam such that lines of the electron beam do not overlap each other at least at a start of preheating, and controls the beam irradiation apparatus to gradually increase at least one of a beam current and the beam size of the electron beam from the start of preheating to an end of preheating.

公开(公告)号：US20230049933A1

公开(公告)日：2023-02-16

申请号：US17886781

申请日：2022-08-12

Applicant: JEOL Ltd.

Inventor： Tatsuo Naruse ,  Ayumu Miyakita ,  Yohei Daino

IPC: B22F10/322 ,  B22F12/30 ,  B22F10/47 ,  B22F12/20

Abstract: A three-dimensional PBF-AM apparatus includes a stage on which a powder material is spread, and a tubular build box disposed in a state of surrounding the stage. The build box includes a side wall portion having a first tubular member surrounding the stage and a second tubular member surrounding the stage with the first tubular member interposed therebetween and forming a space with the first tubular member, and moreover, a vacuum heat insulating layer can be formed inside the side wall portion by vacuuming the space.

公开(公告)号：US20220288696A1

公开(公告)日：2022-09-15

申请号：US17690314

申请日：2022-03-09

Applicant: JEOL Ltd.

Inventor： Taku Hisaki ,  Shinichi Kitamura ,  Takashi Sato ,  Ayumu Miyakita ,  Kozo Koiwa ,  Yohei Daino ,  Masahiko Kawakami ,  Nari Tsutagawa

IPC: B22F12/90 ,  B22F10/28 ,  B22F10/37 ,  B22F12/30 ,  B22F12/13 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A three-dimensional powder bed fusion additive manufacturing apparatus includes a determination unit that determines presence or absence of powder scattering in a second preheating step using at least a third image that is an image of a powder layer photographed by a camera after the second preheating step among a first image that is an image of the powder layer photographed by the camera after a first preheating step, a second image that is an image of the powder layer photographed by the camera after the powder application step, and the third image.

公开(公告)号：US12103076B2

公开(公告)日：2024-10-01

申请号：US17865632

申请日：2022-07-15

Applicant: JEOL Ltd.

Inventor： Nari Tsutagawa ,  Takashi Sato ,  Yohei Daino ,  Kozo Koiwa ,  Yuhei Kaneko ,  Masahiko Kawakami

IPC: B22F10/362 ,  B22F10/28 ,  B22F10/366 ,  B22F12/41 ,  B22F12/49 ,  B22F12/50 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B22F10/362 ,  B22F10/28 ,  B22F10/366 ,  B22F12/41 ,  B22F12/49 ,  B22F12/50 ,  B33Y10/00 ,  B33Y30/00

Abstract: An apparatus includes a build plate, a powder application apparatus that applies metal powder onto the build plate to form a powder layer, a beam irradiation apparatus that irradiates the powder layer with an electron beam, and a control unit that controls the powder application apparatus and the beam irradiation apparatus. When the powder layer is preheated by irradiation with the electron beam, the control unit sets a beam size and an irradiation position of the electron beam such that lines of the electron beam do not overlap each other at least at a start of preheating, and controls the beam irradiation apparatus to gradually increase at least one of a beam current and the beam size of the electron beam from the start of preheating to an end of preheating.

公开(公告)号：US20220288691A1

公开(公告)日：2022-09-15

申请号：US17690298

申请日：2022-03-09

Applicant: JEOL Ltd.

Inventor： Taku Hisaki ,  Shinichi Kitamura ,  Takashi Sato ,  Ayumu Miyakita ,  Kozo Koiwa ,  Yohei Daino ,  Masahiko Kawakami ,  Nari Tsutagawa

IPC: B22F10/85 ,  B33Y10/00 ,  B33Y30/00 ,  B22F10/28 ,  B33Y50/02 ,  B22F12/90 ,  B22F12/67

Abstract: A three-dimensional powder bed fusion additive manufacturing apparatus includes a powder application device that includes a squeegee and applies a powder material to a build plate to form a powder layer, a camera that photographs a manufactured surface of the powder layer, and a determination unit that determines whether powder application failure of the powder material has occurred using an image photographed by the camera while or immediately after the squeegee passes through the manufactured surface.