-
公开(公告)号：US20230014614A1
公开(公告)日：2023-01-19
申请号：US17865632
申请日：2022-07-15
申请人： JEOL Ltd.
发明人： Nari Tsutagawa , Takashi Sato , Yohei Daino , Kozo Koiwa , Yuhei Kaneko , Masahiko Kawakami
IPC分类号： B22F10/362 , B22F12/41 , B22F12/49 , B22F12/50 , B22F10/28 , B22F10/366 , B33Y10/00 , B33Y30/00
摘要： 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：US20220288696A1
公开(公告)日：2022-09-15
申请号：US17690314
申请日：2022-03-09
申请人： JEOL Ltd.
发明人： Taku Hisaki , Shinichi Kitamura , Takashi Sato , Ayumu Miyakita , Kozo Koiwa , Yohei Daino , Masahiko Kawakami , Nari Tsutagawa
IPC分类号： B22F12/90 , B22F10/28 , B22F10/37 , B22F12/30 , B22F12/13 , B33Y10/00 , B33Y30/00 , B33Y50/02
摘要： 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：US20210245254A1
公开(公告)日：2021-08-12
申请号：US17171000
申请日：2021-02-09
申请人： JEOL Ltd.
发明人： Shinichi Kitamura , Nari Tsutagawa
摘要： A three-dimensional powder bed fusion additive manufacturing (PBF-AM) apparatus includes a movement mechanism, a stage, a plurality of support columns, a base plate, and a shielding member. The base plate is supported by the plurality of support columns, and a powder material for forming a product is laminated on the base plate. The shielding member surrounds the plurality of support columns between the stage and the base plate.
-
公开(公告)号：US20210154741A1
公开(公告)日：2021-05-27
申请号：US17013916
申请日：2020-09-08
申请人： JEOL Ltd.
IPC分类号： B22F10/364 , B22F10/85 , B22F10/37
摘要： In a squeegeeing step of the three-dimensional powder bed fusion additive manufacturing (PBF-AM) method, a powder sample is supplied onto a base plate to stack powder layers. In a main melting step, a powder bed which is a top layer of the powder layers is irradiated with an electron beam to melt a two-dimensional shape area, which is a single layer obtained by slicing a shaping model. In a shaping surface checking step, a backscattered electron that is generated when the melted area is irradiated with the electron beam is detected and, based on the backscattered electron, it is determined whether the melting state is normal or not. When it is determined in the shaping surface checking step that the melting state is not normal, a re-melting step is performed to re-irradiate the area melted in the main melting step with an electron beam generated by the beam generation unit.
-
公开(公告)号：US11718025B2
公开(公告)日：2023-08-08
申请号：US17012449
申请日：2020-09-04
申请人： JEOL Ltd.
发明人： Shinichi Kitamura , Nari Tsutagawa , Tatsuo Naruse
IPC分类号： B29C64/218 , B29C64/321 , B29C64/153 , B29C64/232 , B29C64/245 , B33Y30/00
CPC分类号： B29C64/218 , B29C64/153 , B29C64/232 , B29C64/245 , B29C64/321 , B33Y30/00
摘要： An additive manufacturing machine is provided which can smooth out powdered material while preventing mechanical interference between a smoothing plate and a manufacturing box. The additive manufacturing machine has a support stage, a manufacturing box, and a powder feeder mechanism. The powder feeder mechanism feeds powdered material onto the support stage and smooths out the powdered material. The powder feeder mechanism has an arm portion, a guide mechanism, a connective portion, and a drive mechanism. The guide mechanism is secured to the manufacturing box and supports the arm portion such that it can move in a first direction. The connective portion is connected to the arm portion and transmits force to the arm portion only in the first direction. The drive mechanism is secured to a support member different from the manufacturing box and has a drive portion for moving the connective portion in the first direction.
-
公开(公告)号：US20220080506A1
公开(公告)日：2022-03-17
申请号：US17476790
申请日：2021-09-16
申请人： JEOL Ltd.
发明人： Shinichi Kitamura , Nari Tsutagawa
摘要： A three-dimensional powder bed fusion additive manufacturing apparatus includes a storage unit that stores first correspondence information that is correspondence information between an amount of thermal electrons emitted from a build surface and temperature of the build surface, a beam generating unit that irradiates the build surface with a beam, a thermal electron detecting unit that detects thermal electrons emitted from the build surface during irradiation of the beam, and a build surface temperature calculating unit that calculates the temperature of the build surface with reference to the first correspondence information on the basis of the thermal electrons detected by the thermal electron detecting unit.
-
公开(公告)号：US20210069975A1
公开(公告)日：2021-03-11
申请号：US17012449
申请日：2020-09-04
申请人： JEOL Ltd.
发明人： Shinichi Kitamura , Nari Tsutagawa , Tatsuo Naruse
IPC分类号： B29C64/218 , B29C64/245 , B29C64/232 , B29C64/153 , B29C64/321
摘要： An additive manufacturing machine is provided which can smooth out powdered material while preventing mechanical interference between a smoothing plate and a manufacturing box. The additive manufacturing machine has a support stage, a manufacturing box, and a powder feeder mechanism. The powder feeder mechanism feeds powdered material onto the support stage and smooths out the powdered material. The powder feeder mechanism has an arm portion, a guide mechanism, a connective portion, and a drive mechanism. The guide mechanism is secured to the manufacturing box and supports the arm portion such that it can move in a first direction. The connective portion is connected to the arm portion and transmits force to the arm portion only in the first direction. The drive mechanism is secured to a support member different from the manufacturing box and has a drive portion for moving the connective portion in the first direction.
-
公开(公告)号：US12103076B2
公开(公告)日：2024-10-01
申请号：US17865632
申请日：2022-07-15
申请人： JEOL Ltd.
发明人： Nari Tsutagawa , Takashi Sato , Yohei Daino , Kozo Koiwa , Yuhei Kaneko , Masahiko Kawakami
IPC分类号： B22F10/362 , B22F10/28 , B22F10/366 , B22F12/41 , B22F12/49 , B22F12/50 , B33Y10/00 , B33Y30/00
CPC分类号： B22F10/362 , B22F10/28 , B22F10/366 , B22F12/41 , B22F12/49 , B22F12/50 , B33Y10/00 , B33Y30/00
摘要： 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
申请人： JEOL Ltd.
发明人： Taku Hisaki , Shinichi Kitamura , Takashi Sato , Ayumu Miyakita , Kozo Koiwa , Yohei Daino , Masahiko Kawakami , Nari Tsutagawa
摘要： 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：US20210154764A1
公开(公告)日：2021-05-27
申请号：US17013906
申请日：2020-09-08
申请人： JEOL Ltd.
发明人： Nari Tsutagawa , Takashi Sato , Shinichi Kitamura
IPC分类号： B23K15/00 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B22F10/28 , B22F10/85 , B22F12/90 , B23K15/02
摘要： A three-dimensional powder bed fusion additive manufacturing apparatus includes: a base plate; a Z drive mechanism configured to move the base plate in a vertical direction; a powder supplier configured to supply a powder sample onto the base plate to laminate a powder layer; an electron gun configured to generate a beam to be irradiated to the powder layer; a controller configured to control the Z drive mechanism, the powder supplier, and the electron gun to irradiate the beam to a powder bed that is an uppermost layer of the powder layer and perform melting on a two-dimensionally shaped region in which a shaped model is sliced by one layer to shape a three-dimensionally shaped object; and two segment detectors configured to detect a state of the powder bed.
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.014 秒)
