公开(公告)号：US11534968B2

公开(公告)日：2022-12-27

申请号：US17072227

申请日：2020-10-16

Applicant: Technology Research Association for Future Additive Manufacturing ,  Kabushiki Kaisha Toshiba ,  Toshiba Kikai Kabushiki Kaisha

Inventor： Hiroshi Ohno ,  Satoshi Tsuno ,  Mitsuo Sasaki ,  Tomohiko Yamada ,  Yasutomo Shiomi ,  Shimpei Fujimaki

IPC: B29C64/209 ,  B29C64/153 ,  B29C64/165 ,  B33Y10/00 ,  B29C64/268 ,  B22F3/24 ,  B29C64/264 ,  B29C64/205 ,  B29C64/20 ,  B29C64/371 ,  B22F12/00 ,  B22F10/10 ,  B22F10/00 ,  B33Y30/00

Abstract: A nozzle according to one embodiment has an inner surface and an outer surface, and is provided with a first passage through which an energy ray passes, and a second passage that is provided between the inner surface and the outer surface, and through which powder and fluid pass. The second passage includes a second open end on one end thereof in a first direction. A first surface that is one of the inner surface and the outer surface includes a first edge on one end thereof in the first direction. A second surface that is the other one of those includes a second edge on one end thereof in the first direction, and is distanced from the first edge toward the first direction. The fluid ejected from the second open end flows along the second surface, and separates at the second edge.

公开(公告)号：US10926469B2

公开(公告)日：2021-02-23

申请号：US15125078

申请日：2016-05-31

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Koichi Amaya ,  Tetsushi Midorikawa ,  Masaaki Kawaji

IPC: B29C64/35 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/264 ,  B29C64/277 ,  B29C64/20 ,  B22F3/105 ,  B33Y50/02 ,  B29C64/282 ,  B29C64/393 ,  B29C64/153

Abstract: This invention provides a three-dimensional laminating and fabricating system that can remove the influence of a gas flow between the irradiation positions by a plurality of irradiators. The three-dimensional laminating and fabricating system includes a laminating and fabricating unit that includes a plurality of irradiators configured to irradiate a laminating material, and a remover configured to generate a flow path on a laminated surface and remove dust generated by the irradiated laminating material, to cause the plurality of irradiators to perform irradiation to fabricate each layer of a laminated and fabricated object made of the laminating material as an aggregate of cell regions, and a laminating and fabricating controller that controls selection of each of the cell regions to be irradiated by each of the plurality of irradiators so as to prevent the dust generated in each of the cell regions on an upstream side of the flow path from influencing fabricating in each of the cell regions on a downstream side of the flow path.

公开(公告)号：US10786870B2

公开(公告)日：2020-09-29

申请号：US15119469

申请日：2015-03-24

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hideaki Miyano ,  Yoshikazu Ooba ,  Yousuke Katou ,  Koukichi Suzuki ,  Yuya Daicho

IPC: B23K26/342 ,  B22F3/105 ,  B23K15/00 ,  B23K15/02 ,  B23K26/144 ,  B29C67/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B23K26/08 ,  B23K26/14 ,  B29C64/165 ,  B29C31/02 ,  B29C64/20 ,  B65G37/00 ,  B65G65/30 ,  B65G33/08 ,  B05C19/04 ,  B22F3/00 ,  B65G49/00

Abstract: This invention quickly supplies a predetermined amount of powder from a hopper to a recoater. A powder supply apparatus includes, as its feature, a hopper, a powder spreader, a powder replenisher, and a pivoting unit. The hopper of the powder supply apparatus stores a powder. The powder spreader spreads the powder on a shaping surface. The powder replenisher of the powder supply apparatus is provided between the hopper and the powder spreader, and replenishes the powder spreader with a predetermined amount of powder. The pivoting unit of the powder supply apparatus causes the powder replenisher to pivot.

公开(公告)号：US20200180024A1

公开(公告)日：2020-06-11

申请号：US16625516

申请日：2017-06-21

Applicant: FUKUDA METAL FOIL & POWDER CO., LTD. ,  TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Yuji SUGITANI ,  Yoshito NISHIZAWA ,  Takeshi MARUYAMA ,  Hiroaki OKUBO OKUBO

IPC: B22F3/105 ,  B33Y10/00

Abstract: In this invention, a copper powder to which phosphorus (P) is added is developed such that a high-density laminated and shaped product can be obtained by a laminating and shaping method using a fiber laser as a heat source by appropriately reducing the electrical conductivity of copper, so a laminated and shaped product having a high density and a high electrical conductivity can be obtained. This invention is a copper powder for lamination shaping in which a phosphorus element is added to pure copper. The copper powder desirably contains 0.01 wt % or more of the phosphorus element. The copper powder more desirably contains 0.04 wt % or more of the phosphorus element. The copper powder desirably contains 0.30 wt % or less of the phosphorus element. The copper powder more desirably contains 0.24 wt % or less of the phosphorus element. No element other than the phosphorus element is desirably added to the copper powder.

公开(公告)号：US10654991B2

公开(公告)日：2020-05-19

申请号：US15124335

申请日：2016-04-20

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Yasuhiro Nagai ,  Kosuke Takeshita ,  Toshimitsu Okane

IPC: B29C69/00 ,  C08K9/04 ,  B22C9/12 ,  B22C1/22 ,  B29C64/165 ,  C04B35/653 ,  C04B35/14 ,  C04B35/628 ,  C04B35/634 ,  C04B28/00 ,  C04B35/626 ,  C04B35/632 ,  B28B1/00 ,  B32B18/00 ,  C04B26/12 ,  C04B20/10 ,  C04B26/10 ,  B22C1/10 ,  B22C9/02 ,  C08K3/36 ,  C08K9/02 ,  B33Y80/00 ,  C04B111/00 ,  C04B103/00 ,  B33Y10/00 ,  B33Y70/00

Abstract: The present invention is a granular material that can be well recoated regardless of the type of the granular material, and enables a refractory aggregate in an unprinted portion to be used without any regeneration process, in the manufacture of a three-dimensional laminated and shaped mold. This granular material is a granular material for use in three-dimensional laminated mold shaping, and obtained by adding a material that causes a hydration reaction having a moisture absorbing function and generates a catalytic effect to a coating material mixed with or coated with an acid as a catalyst which activates and hardens an organic binder for binding the granular material.

公开(公告)号：US20200147682A1

公开(公告)日：2020-05-14

申请号：US16631832

申请日：2017-07-18

Applicant: FUKUDA METAL FOIL & POWDER CO., LTD. ,  TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Yuji SUGITANI ,  Yoshito NiSHIZAWA ,  Takeshi MARUYAMA ,  Hiroaki OKUBO

IPC: B22F1/00 ,  B22F3/105 ,  B33Y80/00

Abstract: This invention provides a copper powder to which tin (Sn) is added such that a high-density laminated and shaped product can be obtained by a laminating and shaping method using a fiber laser as a heat source by appropriately reducing the electrical conductivity of copper, so a laminated and shaped product having a high density and a high electrical conductivity can be obtained. That is, this invention provides a copper powder for lamination shaping in which a tin element is added to pure copper. Desirably, the copper powder contains 0.5 wt % or more of the tin element. More desirably, the copper powder contains 5.0 wt % or more of the tin element. When the product has an electrical conductivity sufficient as a copper product, the copper powder desirably contains 6.0 wt % or less of the tin element. Furthermore, no element other than the tin element is desirably added to the copper powder.

公开(公告)号：US10369661B2

公开(公告)日：2019-08-06

申请号：US14889088

申请日：2015-02-25

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hiroshi Ohno ,  Yuji Sasaki ,  Mitsuo Sasaki ,  Takashi Obara ,  Kazuyuki Masukawa

IPC: B23K26/342 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/064 ,  B23K26/144 ,  B23K26/70 ,  B29C64/153 ,  B23K26/06 ,  B23K26/073 ,  B23K26/08 ,  B29C67/00

Abstract: An optical processing head capable of downsizing an apparatus while increasing the shaping accuracy of optical processing is disclosed. The optical processing head performs processing while moving, in a predetermined moving direction on a processing surface, an optical spot formed by condensing light emitted by a light source. The optical processing head includes an optical element that condenses light emitted by the light source to generate the optical spot of a shape elongated in the moving direction of the optical spot. Part of the optical spot is set as a processing region, the front side and/or rear side of the processing region in the moving direction is set as a pre-heating region and/or post-heating region, and a processing target object before and/or after processing in the region is heated.

公开(公告)号：US10315251B2

公开(公告)日：2019-06-11

申请号：US15124601

申请日：2016-03-25

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Haruhiko Niitani

IPC: B22F3/105 ,  G01J5/00 ,  G06T7/40 ,  B33Y30/00 ,  B22F3/24 ,  B33Y10/00 ,  B33Y50/02

Abstract: A high-precision three-dimensional laminated and shaped object is shaped based on a captured image. A three-dimensional laminating and shaping apparatus includes a material ejector that ejects a material of a three-dimensional laminated and shaped object onto a shaping table, a light beam irradiator that irradiates the ejected material with a light beam, an image capturer that captures a molten pool formed by irradiating the ejected material with the light beam, a scanning direction determiner that determines a scanning direction of the light beam with respect to a shaped object based on a change in a position of the shaping table, a detector that detects the molten pool based on an image captured by the image capturer and the scanning direction, and a shaping controller that controls at least one of an output of the light beam and a scanning speed of the light beam based on the detected molten pool.

公开(公告)号：US10272516B2

公开(公告)日：2019-04-30

申请号：US15120643

申请日：2015-12-07

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Kazuya Goto

IPC: B22F3/105 ,  B23K15/00 ,  B23K15/02 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/153 ,  B29C64/268 ,  B29C64/393

Abstract: Overheating of and unintended melting of powder is suppressed, and thus the shaping accuracy is improved. A three-dimensional shaping apparatus includes an electron gun that generates an electron beam, at least one primary deflector that deflects the electron beam one- or two-dimensionally, at least one lens that is provided between the electron gun and the primary deflector and focuses the electron beam, a secondary deflector that is provided between the electron gun and the primary deflector, and deflects the electron beam one- or two-dimensionally, and a controller that controls the deflection directions and scanning speeds of the primary deflector and the second deflector. The controller controls the deflection direction and scanning speed of the second deflector while the scanning speed of the primary deflector is lower than a predetermined speed.

公开(公告)号：US10220473B2

公开(公告)日：2019-03-05

申请号：US15120062

申请日：2015-11-11

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hiroshi Ohno ,  Mitsuo Sasaki ,  Yuji Sasaki ,  Satoshi Tsuno ,  Go Obara ,  Tomohiko Yamada ,  Yasutomo Shiomi ,  Takashi Obara

IPC: B23K26/14 ,  B23K26/144 ,  B33Y30/00 ,  B33Y40/00 ,  B23K26/342 ,  B05C11/10 ,  B29C64/209

Abstract: Ejection and stop of a powder flow are switched while maintaining a once generated steady flow without stopping it. A processing nozzle includes a supply source of a fluid containing a powder, a first channel through which the fluid supplied from the supply source passes, a second channel that supplies the fluid to an ejection port of the nozzle, a third channel that releases the fluid outside the nozzle, and a switch that causes the first channel and the second channel to communicate with each other when supplying the fluid to the ejection port, and causes the first channel and the third channel to communicate with each other when not supplying the fluid to the ejection port.