公开(公告)号：US20180161932A1

公开(公告)日：2018-06-14

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 ,  B23K26/06 ,  B23K26/14 ,  B33Y30/00 ,  B29C64/153

CPC classification number: B23K26/342 ,  B22F3/105 ,  B22F3/16 ,  B23K26/0643 ,  B23K26/0665 ,  B23K26/0673 ,  B23K26/082 ,  B23K26/0876 ,  B23K26/147 ,  B29C64/153 ,  B29C67/00 ,  B33Y30/00

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：US20170259377A1

公开(公告)日：2017-09-14

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 ,  B23K26/144 ,  B33Y30/00 ,  B33Y40/00 ,  B05B7/22 ,  B23K26/342

CPC classification number: B23K26/1476 ,  B05B7/228 ,  B23K26/144 ,  B23K26/21 ,  B23K26/34 ,  B23K26/342 ,  B33Y30/00 ,  B33Y40/00

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.

公开(公告)号：US20210039314A1

公开(公告)日：2021-02-11

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

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：US20160368087A1

公开(公告)日：2016-12-22

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: B23K26/06 ,  G02B27/30 ,  G02B27/40

CPC classification number: B23K26/0648 ,  B23K26/0665 ,  B23K26/342 ,  G02B27/0927 ,  G02B27/0955 ,  G02B27/30 ,  G02B27/40

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.

Abstract translation: 公开了能够降低光学处理时的能量损失的光学处理头。 光学处理头包括将由光源发射的光转换成第一平行光的第一光学元件，布置在第一光学元件的下游并将第一平行光转换为第一发散光的第二光学元件，第三光学元件 其布置在所述第二光学元件的下游并将所述第一发散光转换为第二平行光;以及第四光学元件，设置在所述第三光学元件的下游，并将所述第二平行光转换成会聚光，所述会聚光在所述处理表面 侧。

公开(公告)号：US20180147666A1

公开(公告)日：2018-05-31

申请号：US15122938

申请日：2016-03-15

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hiroshi OHNO ,  Mitsuo SASAKI ,  Kazuyuki MASUKAWA ,  Yuji SASAKI ,  Satoshi TSUNO ,  Takashi OBARA

IPC: B23K26/342 ,  B23K26/03 ,  B23K26/046 ,  B23K26/06 ,  B23K26/067 ,  B23K26/144 ,  B23K26/14

CPC classification number: B23K26/342 ,  B23K26/032 ,  B23K26/046 ,  B23K26/0643 ,  B23K26/0648 ,  B23K26/0673 ,  B23K26/144 ,  B23K26/1464 ,  B33Y30/00 ,  B33Y40/00

Abstract: An overall apparatus is downsized by reducing the size of a light beam branching structure. There is provided an optical processing head including an optical element group that guides a processing light beam from a light source to a process surface, and a light beam branching portion that branches reflected light of the processing light beam from the process surface and an observation light beam for observing a state of the process surface. The light beam branching portion is arranged on a light beam path of the processing light beam, and includes, between the optical element group and the process surface, a half mirror that guides the observation light beam to an observation optical system.

公开(公告)号：US20170266675A1

公开(公告)日：2017-09-21

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: B05B7/14

CPC classification number: B05B7/14 ,  B05B7/228 ,  B05C19/00 ,  B23K26/144 ,  B23K26/21 ,  B23K26/34 ,  C23C24/10 ,  C23C26/02

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：US20190291211A1

公开(公告)日：2019-09-26

申请号：US16359384

申请日：2019-03-20

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

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

IPC: B23K26/342 ,  B33Y30/00 ,  B23K26/144 ,  B23K26/14

Abstract: According to an embodiment, a nozzle of an additive manufacturing device includes a first inner surface that defines a first path through which an energy ray passes; and a second inner surface that defines a second path that extends along the first path and through which gas and a powder material pass. The first path opens to a leading end of the nozzle. The second path opens to near or around the first path. At least part of the second inner surface includes a first region having a larger friction coefficient for the powder material than the friction coefficient of at least one of the first inner surface and an outer peripheral surface of the leading end.

公开(公告)号：US20190084226A1

公开(公告)日：2019-03-21

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 ,  B29C64/153 ,  B29C64/371

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：US20170259378A1

公开(公告)日：2017-09-14

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 ,  B05C11/10 ,  B33Y40/00 ,  B33Y30/00 ,  B23K26/342 ,  B23K26/144

CPC classification number: B23K26/1476 ,  B05C11/1036 ,  B23K26/1435 ,  B23K26/1438 ,  B23K26/144 ,  B23K26/1462 ,  B23K26/342 ,  B29C64/209 ,  B33Y30/00 ,  B33Y40/00

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.