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公开(公告)号：US20210346954A1
公开(公告)日：2021-11-11
申请号：US17278121
申请日：2019-03-14
Inventor： Akihiko CHIBA , Takahiro KUDO , Youhei DAINO , Kenta AOYAGI
Abstract: This invention provides, by simple mechanical treatment, a metal powder that generates no smoke phenomenon when laminating and shaping a metal object even when decreasing a preheating temperature. In the metal powder, a solidification structure including a dendritic structure on the surface of the metal powder has been flattened. The solidification structure including the dendritic structure has been flattened by mechanical treatment including collision treatment of the metal powder. The mechanical treatment is performed by heating the metal powder to 100° C. to 300° C. The metal powder is a metal powder that is heated to a predetermined temperature and whose capacitance component of a measured impedance becomes zero. This metal powder is a powder of a metal alloy produced by an atomization process or a plasma rotation electrode process. The metal alloy includes a nickel-based alloy, a cobalt-chrome alloy, an iron-based alloy, an aluminum alloy, and a titanium alloy.
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公开(公告)号：US11007720B2
公开(公告)日：2021-05-18
申请号：US16159179
申请日：2018-10-12
Inventor： Haruhiko Niitani
IPC: B29C64/393 , B29C64/268 , B29C64/153 , B33Y50/02 , B33Y10/00 , B33Y30/00 , B23K26/342 , B29C64/118 , B22F10/00 , B22F10/10
Abstract: A three-dimensional laminating and shaping apparatus capable of measuring the quality of a three-dimensional laminated and shaped object in real time during shaping of the three-dimensional laminated and shaped object includes a material ejector that ejects the material of the three-dimensional laminated and shaped object onto a shaping table on which the three-dimensional laminated and shaped object is shaped, a light beam irradiator that irradiates the ejected material with a light beam, a data acquirer that acquires monitoring data used to monitor a shaping state of the three-dimensional laminated and shaped object during shaping of the three-dimensional laminated and shaped object, and a shaping quality estimator that estimates shaping quality of the three-dimensional laminated and shaped object based on the monitoring data.
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103.发明申请公开(公告)号：US20210004507A1
公开(公告)日：2021-01-07
申请号：US16976669
申请日：2018-03-08
Inventor： Noriko YAMAZAKI , Noriko WATARI , Yuzuru OGURA , Toshiya WATANABE
Abstract: A powder material as the raw material of a three-dimensional laminated and shaped object is accurately evaluated. This invention provides an evaluation apparatus of a powder material as a raw material of a three-dimensional laminated and shaped object, including a calculator that calculates, using powder constitution data concerning particles constituting the powder material, a volume of a closed space formed by the plurality of particles in the powder material, and an evaluator that evaluates the powder material by comparing the volume of the closed space calculated by the calculator with a predetermined threshold.
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公开(公告)号：US10566171B2
公开(公告)日：2020-02-18
申请号：US15123350
申请日：2016-03-25
Inventor： Zhixiong Yuan , Kazuya Goto , Toshiyuki Morimura , Takahiro Shimbo
IPC: H01J37/147 , B23K15/00 , H01J37/302 , B33Y30/00 , B22F3/105 , H01J37/21 , B33Y10/00 , B33Y50/02 , B29C64/153 , B29C64/393 , B29C64/268 , B29C64/205 , B23K15/02 , H01J37/10 , H01J37/305 , G21K1/08 , B29C64/10 , B29C64/20
Abstract: This invention can maintain the temperature of the shaping plane in a three-dimensional layer-by-layer shaping apparatus. A three-dimensional layer-by-layer shaping apparatus includes a material spreader that spreads the material or materials of a three-dimensional layer-by-layer shaped object onto the shaping plane on which the three-dimensional layer-by-layer shaped object is to be shaped; an electron gun that generates an electron beam; at least one deflector that deflects the electron beam so that it scans the shaping plane one- or two-dimensionally; at least one lens that is positioned between the electron gun and the deflector, and focuses the electron beam; a focus controller that controls the focus of the electron beam based on which region is to be scanned by the electron beam; and a controller that controls the deflecting direction of the deflector and the scanning rate.
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公开(公告)号：US10532427B2
公开(公告)日：2020-01-14
申请号：US14888582
申请日：2015-02-20
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.
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Patent Agency Ranking
公开(公告)号：US10456983B2
公开(公告)日：2019-10-29
申请号：US15125499
申请日：2016-03-25
Inventor： Haruhiko Niitani
IPC: B29C67/00 , B29C64/393 , B29C64/268 , B29C64/153 , B33Y50/02 , B33Y10/00 , B33Y30/00 , B23K26/342 , B22F3/105 , B29C64/118
Abstract: A three-dimensional laminating and shaping apparatus capable of measuring the quality of a three-dimensional laminated and shaped object in real time during shaping of the three-dimensional laminated and shaped object includes a material ejector that ejects the material of the three-dimensional laminated and shaped object onto a shaping table on which the three-dimensional laminated and shaped object is shaped, a light beam irradiator that irradiates the ejected material with a light beam, a data acquirer that acquires monitoring data used to monitor a shaping state of the three-dimensional laminated and shaped object during shaping of the three-dimensional laminated and shaped object, and a shaping quality estimator that estimates shaping quality of the three-dimensional laminated and shaped object based on the monitoring data.
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公开(公告)号：US10449560B2
公开(公告)日：2019-10-22
申请号：US14889280
申请日：2015-02-25
Inventor： Hiroshi Ohno , Yuji Sasaki , Mitsuo Sasaki , Takashi Obara , Kazuyuki Masukawa
IPC: B05B1/24 , B33Y30/00 , B23K26/144 , B23K26/342 , B29C64/153 , B29C64/20 , B22F3/105 , B23K26/14 , B33Y40/00
Abstract: An optical processing nozzle that homogeneously supplies a fluid to a processing surface in optical processing. The optical processing nozzle includes a beam path that is arranged so that a beam can pass through the beam path towards a processing surface in order to perform processing using a beam guided from a light source, and a channel structure that is arranged around the beam path and is configured to eject a fluid towards the processing surface. The channel structure includes an inflow port through which the fluid flows, at least two passage holes through which the fluid flowing from the inflow port passes, a channel that guides the fluid from the inflow port to the passage holes, and an ejection port from which the fluid having passed through the at least two passage holes is ejected toward the processing surface.
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公开(公告)号：US10442136B2
公开(公告)日：2019-10-15
申请号：US15124801
申请日：2016-05-31
Inventor： Koichi Amaya , Tetsushi Midorikawa , Masaaki Kawaji
IPC: B29C64/393 , B33Y30/00 , B33Y50/00 , B33Y50/02 , B29C64/277 , B29C64/264 , B33Y10/00 , B29C64/153 , B22F3/105
Abstract: This invention provides a three-dimensional laminating and fabricating system that shortens the scanning time of a divided scanning region and shortens the fabricating time of three-dimensional laminating and fabricating. The three-dimensional laminating and fabricating system includes a laminating and fabricating unit that includes at least one irradiator configured to irradiate a laminating material and fabricates 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 the laminating and fabricating unit such that the irradiator irradiates the laminating material in each of the cell regions by performing spiral scanning along sides of a scanning region that is used to irradiate the cell regions by the irradiator and has a shape including at least five vertices with an interior angle of not less than 90°.
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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.
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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.
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