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公开(公告)号：US11027488B2
公开(公告)日：2021-06-08
申请号：US15124624
申请日：2016-03-25
Inventor： Haruhiko Niitani , Yoshihito Fujita
IPC: B29C67/00 , B29C64/245 , B33Y30/00 , B33Y50/02 , B23K26/144 , B22F10/20 , B33Y10/00 , B23K26/342 , B23K26/70 , B29C64/153 , B29C64/393 , B29C64/268 , B22F10/10
Abstract: A rise in temperature of a work (laminating base material) is controlled and the occurrence of thermal deformation is suppressed. There is provided a three-dimensional laminating and shaping apparatus having the following arrangement. That is, the three-dimensional laminating and shaping apparatus includes a material ejector that ejects a material of a three-dimensional laminated and shaped object onto a work on which the three-dimensional laminated and shaped object is shaped. The three-dimensional laminating and shaping apparatus includes a light beam irradiator that irradiates the ejected material with a light beam. Furthermore, the three-dimensional laminating and shaping apparatus includes a jig to which the work is detachably attached. The jig includes a channel supplied with a cooling medium for cooling the work.
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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.
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公开(公告)号：US10850350B2
公开(公告)日：2020-12-01
申请号：US15123175
申请日：2016-03-15
Inventor： Go Obara , Hiroshi Ohno
IPC: B23K26/00 , B23K26/06 , B33Y30/00 , B29C64/153 , B29C64/371 , B29C64/209 , B23K26/142 , C23C4/123 , B05B1/24 , B23K26/12 , B23K26/14 , B22F3/105
Abstract: Deterioration of a shaped object is prevented. There is provided an optical processing nozzle including an optical system in which a condensing point is adjusted to a processing point, a first set of fluid mixture discharge pipes that discharges, to the processing point, a material/purge gas fluid mixture obtained by mixing a purge gas in a powder processing material, and a second set of purge gas discharge pipes that discharges a purge gas having a purge function to the first set of fluid mixture discharge pipes, each of the fluid mixture discharge pipes of the first set being associated with each of the purge gas discharge pipes of the second set.
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公开(公告)号：US20200264086A1
公开(公告)日：2020-08-20
申请号：US16641983
申请日：2017-08-25
Applicant: FUKUDA METAL FOIL & POWDER CO., LTD. , TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
Inventor： Seiichi MATSUMOTO , Yuji SUGITANI
IPC: G01N11/14 , B33Y30/00 , B33Y50/00 , B23K15/00 , B23K26/342
Abstract: This invention relates to a method of evaluating powder for lamination shaping by stable criteria. In this method, it is evaluated whether powder for lamination shaping can be spread into a uniform powder layer in the lamination shaping, wherein the powder is evaluated using, as a flowability of the powder, an adhesive force of the powder calculated from a failure envelope obtained by a shear test. The shear test is conducted by a powder rheometer, and the adhesive force is obtained from the relationship between a normal stress and a shearing stress at the powder rheometer. If the adhesive force is 0.450 kPa or less, the powder is evaluated to be spread into a uniform powder layer in the lamination shaping. Furthermore, if at least one of that the 50% particle sin of the powder obtained by a laser diffraction method is 3 to 250 μm and that the apparent density of the powder is 3.5 g/cm3 or more is satisfied, the powder is evaluated to be spread into a uniform powder layer in the lamination shaping.
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公开(公告)号：US10371645B2
公开(公告)日：2019-08-06
申请号：US14888281
申请日：2015-03-10
Inventor： Hiroshi Ohno , Yuji Sasaki , Mitsuo Sasaki , Takashi Obara , Kazuyuki Masukawa
IPC: G01N21/94 , G01N21/15 , B23K26/70 , B23K26/03 , B23K26/06 , B23K26/14 , B23K26/21 , G02B5/08 , G02B19/00 , G02B27/00 , G01N21/71 , G01N21/954 , G01N21/17
Abstract: An optical processing head that detects a trouble of an optical processing head that will be generated at the time of optical processing before the trouble occurs is disclosed. The optical processing head that performs processing by condensing, on a process surface, a ray emitted by a light source for processing includes a cylindrical housing that surrounds a ray for processing emitted by the light source for processing, a ray emitter for inspection that is incorporated in the cylindrical housing and arranged outside the path of the ray for processing, and a light receiver that is incorporated in the cylindrical housing, arranged outside the path of the ray for processing, and receives a ray for inspection emitted by the ray emitter for inspection. The contamination of the inner surface of the cylindrical housing or the concentration of a scattering object flowing into the cylindrical housing is inspected by using a signal acquired from the light receiver.
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Patent Agency Ranking
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.
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公开(公告)号：US10162187B2
公开(公告)日：2018-12-25
申请号：US14763151
申请日：2015-03-10
Inventor： Saneyuki Goya , Toshiya Watanabe , Minoru Danno , Yoshihito Fujita , Haruhiko Niitani
Abstract: This invention is directed to attenuating a beam output without changing the beam position and the beam diameter. A high-output optical attenuator includes a first reflector that totally reflects incident light and causes first reflected light serving as reflected light of the incident light to enter a second reflecting portion, a second reflector that reflects the first reflected light and causes second reflected light serving as reflected light of the first reflected light to enter a third reflecting portion, a third reflector that reflects the second reflected light and causes third reflected light serving as reflected light of the second reflected light to enter a fourth reflecting portion, and a fourth reflector that reflects the third reflected light as fourth reflected light having the same optical axis as the optical axis of the incident light. At least two of the second reflector, the third reflector, and the fourth reflector are half mirrors.
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公开(公告)号：US20180215095A1
公开(公告)日：2018-08-02
申请号：US15125078
申请日：2016-05-31
Inventor： Koichi AMAYA , Tetsushi MIDORIKAWA , Masaaki KAWAJI
IPC: B29C64/35 , B29C64/393 , B33Y50/02 , B33Y30/00 , B33Y10/00 , B29C64/282
CPC classification number: B29C64/35 , B22F3/1055 , B22F2999/00 , B29C64/153 , B29C64/20 , B29C64/264 , B29C64/277 , B29C64/282 , B29C64/393 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B22F2003/1056 , B22F2201/00
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.
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公开(公告)号：US20180133840A1
公开(公告)日：2018-05-17
申请号：US15125385
申请日：2016-03-25
Inventor： Keiichi NORIYAMA , Hirohisa KURAMOTO
IPC: B23K26/342 , B33Y10/00 , B33Y30/00 , B33Y50/02 , B23K26/03 , B23K26/082 , B23K26/144
CPC classification number: B23K26/342 , B22F3/1055 , B22F2003/1056 , B22F2003/1057 , B22F2999/00 , B23K26/032 , B23K26/034 , B23K26/082 , B23K26/14 , B23K26/144 , B29C64/153 , B29C64/393 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G01J5/0037 , G01J2005/0077 , G01J2005/0085 , G01K2213/00 , Y02P10/295 , B22F2203/03 , B22F2203/11
Abstract: The temperature of a molten pool is measured based on an image captured by an infrared camera or the like. A three-dimensional laminating and shaping apparatus include a material ejector that ejects a material of a three-dimensional laminated and shaped object. The three-dimensional laminating and shaping apparatus includes a light beam irradiator that irradiates the ejected material with a light beam. The three-dimensional laminating and shaping apparatus includes an image capturer that captures a molten pool of the material formed by irradiating the ejected material with the light beam. The three-dimensional laminating and shaping apparatus includes a temperature deriving unit that derives a temperature of the molten pool based on a luminance of an image of the molten pool captured by the image capturer.
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公开(公告)号：US20180085999A1
公开(公告)日：2018-03-29
申请号：US15125104
申请日：2016-03-09
Inventor： Koichi AMAYA , Tetsushi MIDORIKAWA , Takeshi YAMADA
IPC: B29C64/393 , B29C64/214 , B29C64/264 , B29C64/10
CPC classification number: B29C64/393 , B22F3/105 , B22F3/1055 , B22F3/16 , B22F2003/1057 , B29C64/10 , B29C64/153 , B29C64/214 , B29C64/264 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B33Y50/00 , B33Y50/02 , G05B19/4099 , Y02P10/295
Abstract: A system of this invention is a three-dimensional laminating and fabricating system that suppresses, in advance, a squeezing blade from getting caught on a surface of a laminated and fabricated object. The three-dimensional laminating and fabricating system includes a laminating and fabricating unit that includes a squeezing blade configured to spread a laminating material on an upper layer of a laminated and fabricated object, and an irradiator configured to irradiate the laminating material, and fabricates each layer of the laminated and fabricated object as an aggregate of cell regions, and a laminating and fabricating controller that controls the laminating and fabricating unit such that a scanning direction in which the irradiator irradiates the laminating material in the cell region changes with respect to a moving direction of the squeezing blade during laminating and fabricating.
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