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公开(公告)号：US20220097142A1
公开(公告)日：2022-03-31
申请号：US17426915
申请日：2019-12-13
Applicant: Mitsubishi Heavy Industries Machine Tool Co., Ltd. , Technology Research Association for Future Additive Manufacturing
Inventor： Tomohiro WAKANA
Abstract: A three-dimensional deposition device and a three-dimensional deposition device method are provided. Included are: a powder passage and a nozzle injection opening that supply a powder toward a working surface of an object to be processed; a laser path that irradiates the powder with a laser beam to sinter or melt and solidify at least a part of the powder irradiated with the laser beam so as to form formed layers; a rotation table unit serving as an irradiation angle changing unit that changes an irradiation angle of the laser beam emitted from the laser path to the working surface; and a controller that controls the rotation table unit so that the irradiation angle on an overhanging side with respect to the working surface is less than 90° in a range in which the formed layers can be formed.
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公开(公告)号：US20210387265A1
公开(公告)日：2021-12-16
申请号：US17426845
申请日：2019-12-13
Applicant: Mitsubishi Heavy Industries Machine Tool Co., Ltd. , Technology Research Association for Future Additive Manufacturing
Inventor： Haruhiko NIITANI , Tomohiro WAKANA
Abstract: A surface processing device, a surface processing method, and a three-dimensional deposition device are provided. Included are: a powder passage serving as a powder supply unit, which supplies a powder toward a working surface of an object to be processed; and a laser path serving as a light irradiation unit, which irradiates the powder before reaching the object to be processed with a light beam. An irradiation position of the light beam and an injection position of the powder on the working surface are offset.
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公开(公告)号：US20210299754A1
公开(公告)日：2021-09-30
申请号：US17269640
申请日：2018-08-24
Inventor： Kenta AOYAGI , Akihiko CHIBA
Abstract: A general-purpose process window is constructed while saving cost and time. A process window generation method comprises performing laminating and shaping of samples using sets of at least two parameters for controlling laminating and shaping, which are scattered in a process window, determining, in a process map generated by mapping evaluation results obtained by evaluating the laminated and shaped samples, a boundary of the evaluation results by machine learning; and repeating the performing laminating and shaping and the determining while using a boundary region including the determined boundary as a new process window, and generating a process window separated by a finally determined boundary as a process window that guarantees quality of laminating and shaping.
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公开(公告)号：US11077613B2
公开(公告)日：2021-08-03
申请号：US15513434
申请日：2016-09-02
Inventor： Koichi Amaya , Toshihiko Kato , Hideto Matsubara , Mitsuyoshi Yoshida
IPC: B29C67/00 , B29C64/176 , B33Y30/00 , B33Y10/00 , B33Y50/02 , B29C64/393 , B29C64/264 , B22F10/20 , B29C64/153 , B29C64/268 , B22F10/30
Abstract: The stop time of a whole apparatus caused by planning of shaping, maintenance, replacement of a material, or the like is shortened. A three-dimensional laminating and shaping apparatus includes a plurality of shaping chambers, at least one material supplier that supplies a material of a three-dimensional laminated and shaped object onto a shaping table in each of the shaping chambers, at least one light beam irradiator that irradiates the material with a light beam, and a controller that controls the material supplier and the light beam irradiator. If the material supplier supplies the material onto one of the shaping tables, the controller controls the light beam irradiator to perform irradiation of the light beam onto the other one of the shaping tables.
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公开(公告)号：US11020906B2
公开(公告)日：2021-06-01
申请号：US16159072
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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Patent Agency Ranking
公开(公告)号：US10882140B2
公开(公告)日：2021-01-05
申请号：US15125385
申请日：2016-03-25
Inventor： Keiichi Noriyama , Hirohisa Kuramoto
IPC: B23K26/342 , B33Y30/00 , B33Y10/00 , B23K26/03 , B33Y50/02 , B23K26/082 , B23K26/14 , B22F3/105 , B29C64/153 , B29C64/393 , G01J5/00 , B23K26/144
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：US20200254517A1
公开(公告)日：2020-08-13
申请号：US16641963
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 , Motonori NISHIDA
Abstract: This invention relates to a method of evaluating a squeegeeing property of powder for lamination shaping by stable criteria. In this method, the squeegeeing property is evaluated using at least a satellite adhesion ratio of the powder and an apparent density of the powder. The satellite adhesion ratio is the ratio of the number of particles on which satellites are adhered to the number of all particles. If the satellite adhesion ratio is equal to or less than 50%, and the apparent density is equal to or more than 3.5 g/cm3, the squeegeeing property is evaluated as that the powder can be spread into a uniform powder layer in the lamination shaping. Furthermore, if the 50% particle size of a powder obtained by a laser diffraction method is 3 to 250 μm, the squeegeeing property is evaluated as that the powder can be spread into a uniform powder layer in the lamination shaping.
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公开(公告)号：US10583517B2
公开(公告)日：2020-03-10
申请号：US15122836
申请日：2016-03-25
Inventor： Shinichi Kitamura , Hironobu Manabe
Abstract: This invention effectively suppresses the generation of scattered electrons such as secondary electrons and backscattered electrons. A three-dimensional laminating and shaping apparatus includes a linear funnel that recoats a material of a three-dimensional laminated and shaped object onto a shaping surface on which the three-dimensional laminated and shaped object is to be shaped. The three-dimensional laminating and shaping apparatus also includes an electron gun that generates an electron beam. The three-dimensional laminating and shaping apparatus further includes an anti-deposition cover made of a metal and formed between the shaping surface and the electron gun. In addition, the three-dimensional laminating and shaping apparatus includes a DC power supply that applies a positive voltage to the anti-deposition cover.
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公开(公告)号：US10406748B2
公开(公告)日：2019-09-10
申请号：US15118386
申请日：2015-12-25
Inventor： Kazuhiro Honda
IPC: B33Y10/00 , B33Y50/02 , B22F3/105 , B29C64/336 , B29C64/153 , B29C64/393 , B29C64/209 , B29C64/214 , B29C64/147 , B33Y30/00 , B33Y50/00 , B29C64/40 , B08B15/02 , B22F7/06 , G05B19/00 , G05B19/05
Abstract: A three-dimensional shaped object using a plurality of materials can be shaped, and replenishment of the materials is implemented during shaping without stopping an apparatus. A three-dimensional laminating and shaping apparatus includes a shaping chamber in which a three-dimensional laminated and shaped object is shaped, at least two material spreaders that are provided in the shaping chamber and spread materials of the three-dimensional laminated and shaped object, at least two material suppliers that supply the materials to the material spreaders, a controller that controls movements of the material spreaders and the material suppliers, and a beam irradiator that irradiates the materials with a beam. The material spreaders and the material suppliers are respectively paired, and the controller controls the movements of the material spreaders and the material suppliers so that each of the material spreaders is supplied, at a predetermined timing, with the material from a paired one of the material suppliers.
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公开(公告)号：US10234645B2
公开(公告)日：2019-03-19
申请号：US15513371
申请日：2016-09-14
Inventor： Yuta Ishige , Etsuji Katayama , Hajime Mori
IPC: G02B6/42 , H01S5/022 , H01S5/024 , G02B19/00 , G02B27/09 , H01S5/40 , B22F3/105 , H01S5/00 , B29C64/153 , B29C64/268
Abstract: A variation in coupling ratio of output light from a laser element to an optical fiber is suppressed. A semiconductor laser module including a plurality of semiconductor laser elements, an optical fiber, a condenser that condenses a laser beam emitted from each of the semiconductor laser elements to the optical fiber, and a housing that implements the laser elements, the condenser, and the optical fiber includes at least one thin plate that is arranged between the laser elements and a top of the housing, and arranged on the top to form a gap with the top.
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