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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.
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公开(公告)号：US20250065410A1
公开(公告)日：2025-02-27
申请号：US18810645
申请日：2024-08-21
Applicant: JEOL Ltd.
Inventor： Taku Hisaki , Takashi Sato , Kozo Koiwa
Abstract: Even when shape elements having opposing appropriate manufacturing conditions are mixed in one cross-sectional shape, the entire cross-sectional shape is manufactured under an appropriate manufacturing condition. A build data generating device generating build data for controlling a three-dimensional powder bed fusion additive manufacturing apparatus that manufactures an article by melting a cross-sectional shape of each layer by irradiation of a beam includes: a region segmentation unit that performs processing for segmenting the cross-sectional shape cut out from three-dimensional shape data of the article into a fine region and a coarse region; and a condition application unit that applies different manufacturing conditions to the fine region and the coarse region segmented by the region segmentation unit to generate the build data.
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Patent Agency Ranking
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
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.
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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.
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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
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.
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公开(公告)号：US20250065407A1
公开(公告)日：2025-02-27
申请号：US18813186
申请日：2024-08-23
Applicant: JEOL Ltd.
Inventor： Taku Hisaki , Takashi Sato , Kozo Koiwa
Abstract: Provided is a technique capable of reducing variation in density of scanning lines when generating the scanning lines for manufacturing an article by three-dimensional powder bed fusion additive manufacturing. A build data generating device generates build data for controlling the three-dimensional powder bed fusion additive manufacturing apparatus that melts the cross-sectional shape of each layer by irradiation of a beam to manufacture the article. The build data generating device includes a build data generating unit that generates a plurality of scanning lines in a region of the cross-sectional shape cut out from three-dimensional shape data of the article by a predetermined beam scanning method, and generates correction scanning lines in a portion where the arrangement of the scanning lines becomes sparse and/or a portion where the arrangement of the scanning lines becomes dense.
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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
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.
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