公开(公告)号：US20190091926A1

公开(公告)日：2019-03-28

申请号：US16131391

申请日：2018-09-14

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 ,  B29C64/165 ,  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：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：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.

公开(公告)号：US10780634B2

公开(公告)日：2020-09-22

申请号：US16132683

申请日：2018-09-17

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 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/153 ,  B29C64/371 ,  B22F3/105 ,  B22F3/24 ,  B29C64/20 ,  B29C64/268 ,  B29C64/165 ,  B29C64/205 ,  B29C64/264

Abstract: A nozzle according to one embodiment includes a nozzle unit and a guide surface. A first passage, a second passage, and the guide surface are provided to the nozzle unit. The first passage has a first open end. The second passage has a second open end, and a section that is positioned upstream of the second open end and that extends in a second direction. The guide surface has an edge in a first direction. The guide surface is exposed on the outer side at the edge, is along a third direction at the edge, the third direction being a direction becoming more distanced from an axis than the second direction does, as the third direction is extended further toward the first direction. A flow of fluid ejected from the second open end follows the guide surface, and becomes separated from the nozzle unit at the edge.

公开(公告)号：US10399182B2

公开(公告)日：2019-09-03

申请号：US15123889

申请日：2016-03-15

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hiroshi Ohno ,  Yuji Sasaki ,  Satoshi Tsuno ,  Naotada Okada ,  Mitsuo Sasaki

IPC: B23K26/342 ,  B23K26/082 ,  B22F3/105 ,  B23K26/067 ,  B33Y30/00 ,  B29C67/00 ,  B29C64/153 ,  B23K26/06 ,  B23K26/14 ,  B23K26/08 ,  B22F3/16

Abstract: The mobility of an optical processing apparatus is improved. There is provided an optical processing apparatus for scanning a processing region having an at least one-dimensional spread by moving a nozzle head while irradiating the processing region with an optical processing light beam via the nozzle head, including a light source that emits, to air, the optical processing light beam toward the nozzle head, a nozzle head that includes a hollow nozzle in a vertical direction and a light beam direction changing optical system which receives the light beam emitted from the light source and propagated in the air, and changes a propagation direction of the received light beam to a direction of a currently processed processing point in the processing region, and a main scanning direction moving mechanism that moves the nozzle head by causing the nozzle head to scan in a main scanning direction of the processing region.

公开(公告)号：US10065201B2

公开(公告)日：2018-09-04

申请号：US15120001

申请日：2015-11-11

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hiroshi Ohno ,  Satoshi Tsuno ,  Yuji Sasaki

IPC: B05B5/00 ,  B05C19/00 ,  B05B7/16 ,  B05B7/14 ,  B05B7/22 ,  C23C26/02 ,  C23C24/10

Abstract: A branch location is arranged close to a nozzle, and the channel lengths are the same. A processing nozzle that includes a beam path for passing light from a light source and ejects a fluid containing a processing material from an ejection port includes a supply pipe that is arranged outside the beam path through which the light passes, and supplies the fluid, and a first branch pipe and a second branch pipe that supply the fluid from the supply pipe to the ejection port, and have the same total length. The first branch pipe includes a first bent portion having a first shape on an upstream side of the fluid, and a second bent portion having a second shape on a downstream side of the fluid, and the second branch pipe includes a third bent portion having the first shape on the upstream side of the fluid, and a fourth bent portion having the second shape on the downstream side of the fluid.

公开(公告)号：US10532427B2

公开(公告)日：2020-01-14

申请号：US14888582

申请日：2015-02-20

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hiroshi Ohno ,  Tetsuo Sakai ,  Mitsuo Sasaki ,  Kazuyuki Masukawa ,  Takashi Obara ,  Yuji Sasaki ,  Satoshi Tsuno

IPC: G02B27/40 ,  B23K26/06 ,  B23K26/342 ,  G02B27/09 ,  G02B27/30

Abstract: An optical processing head capable of reducing the energy loss at the time of optical processing is disclosed. The optical processing head includes a first optical element that converts light emitted by a light source into first parallel light, a second optical element that is arranged downstream of the first optical element and converts the first parallel light into first divergent light, a third optical element that is arranged downstream of the second optical element and converts the first divergent light into second parallel light, and a fourth optical element that is arranged downstream of the third optical element and converts the second parallel light into convergent light which is condensed on the processing surface side.

公开(公告)号：US10112261B2

公开(公告)日：2018-10-30

申请号：US15119816

申请日：2015-11-11

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hiroshi Ohno ,  Satoshi Tsuno ,  Yuji Sasaki ,  Go Obara ,  Naotada Okada

IPC: B23K26/14 ,  B23K26/34 ,  B23K26/21 ,  B23K26/144 ,  B33Y30/00 ,  B33Y40/00 ,  B23K26/342 ,  B05B7/22

Abstract: A powder convergence improves without varying the flow velocity and powder density of a powder flow. A processing nozzle includes an inner cone including a beam path that passes light from a light source, an outer cone arranged outside the inner cone, a fluid ejection channel formed by a gap between the inner cone and the outer cone, and including an ejection port that opens toward a process surface, and a fluid guide channel having a flow inlet for a fluid. The fluid guide channel guides the fluid toward the fluid ejection channel in a direction away from the beam path.