Patents Assigned to TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
  • Publication number: 20220118519
    Abstract: A three-dimensional deposition method and a three-dimensional object are provided. Included are: a step of supplying a powder toward an outer peripheral surface of a shaft, irradiating the powder with a laser beam, and sintering or melting and solidifying at least a part of the powder irradiated with the laser beam to form a formed layer, so as to form a three-dimensional object body in which an internal space communicates with an exterior through an opening; a step of discharging a residue such as the powder in the internal space from the opening to an exterior; and a step of emitting the laser beam toward an end surface of the opening to melt and solidify the formed layer, so as to close the opening.
    Type: Application
    Filed: December 13, 2019
    Publication date: April 21, 2022
    Applicants: Mitsubishi Heavy Industries Machine Tool Co., Ltd., Technology Research Association for Future Additive Manufacturing
    Inventor: Tomohiro WAKANA
  • Publication number: 20220118710
    Abstract: A management system is for managing a material of a three-dimensional deposition device that shapes a laminate by irradiation with a light beam and supplying of the material. The management system includes a shape data acquisition unit that acquires shape data of the laminate; a shaping condition setting unit that sets, based on the shape data, a set shaping condition as a shaping condition for shaping the laminate by the three-dimensional deposition device; a shaping simulation execution unit that executes, based on the set shaping condition, a shaping simulation for shaping the laminate with the set shaping condition; and a required material amount acquisition unit that acquires, based on an execution result of the shaping simulation, a required material amount that is an amount of the material required for shaping the laminate by the three-dimensional deposition device.
    Type: Application
    Filed: December 12, 2019
    Publication date: April 21, 2022
    Applicants: MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO., LTD., TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Yoshihito FUJITA, Haruhiko NIITANI
  • Publication number: 20220097142
    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.
    Type: Application
    Filed: December 13, 2019
    Publication date: March 31, 2022
    Applicants: Mitsubishi Heavy Industries Machine Tool Co., Ltd., Technology Research Association for Future Additive Manufacturing
    Inventor: Tomohiro WAKANA
  • Publication number: 20220097143
    Abstract: In the three-dimensional deposition device and the three-dimensional deposition method, included are: a powder passage and a nozzle injection opening serving as a powder supply unit that supplies powder toward an object to be processed; a laser path serving as a light irradiation unit 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 to form a formed layer; an interference information acquisition unit that acquires interference information on the object to be processed with the powder injected from the nozzle injection opening based on the shape of the object to be processed; and a controller that changes the powder passage of the powder that the nozzle injection opening supplies to the object to be processed based on the interference information acquired by the interference information acquisition unit.
    Type: Application
    Filed: December 13, 2019
    Publication date: March 31, 2022
    Applicants: Mitsubishi Heavy Industries Machine Tool Co., Ltd., Technology Research Association for Future Additive Manufacturing
    Inventor: Tomohiro WAKANA
  • Publication number: 20210387261
    Abstract: A calculation device used in a manufacturing apparatus for producing a 3D manufactured object from a solidified layer formed by heating a layer-shaped material layer formed of a powder material by irradiation with an energy beam includes a detection unit configured to obtain a state of the material layer based on a shape of the formed material layer, and an output unit configured to output information on the state of the material layer obtained by the detection unit to set a manufacturing condition of the manufacturing apparatus.
    Type: Application
    Filed: June 13, 2018
    Publication date: December 16, 2021
    Applicants: NIKON CORPORATION, TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventor: Koki TAKESHITA
  • Publication number: 20210387265
    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.
    Type: Application
    Filed: December 13, 2019
    Publication date: December 16, 2021
    Applicants: Mitsubishi Heavy Industries Machine Tool Co., Ltd., Technology Research Association for Future Additive Manufacturing
    Inventors: Haruhiko NIITANI, Tomohiro WAKANA
  • Publication number: 20210346954
    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.
    Type: Application
    Filed: March 14, 2019
    Publication date: November 11, 2021
    Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Akihiko CHIBA, Takahiro KUDO, Youhei DAINO, Kenta AOYAGI
  • Publication number: 20210299754
    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.
    Type: Application
    Filed: August 24, 2018
    Publication date: September 30, 2021
    Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Kenta AOYAGI, Akihiko CHIBA
  • Publication number: 20210268586
    Abstract: A calculation device used in a manufacturing apparatus for producing a 3D manufactured object from a solidified layer formed by heating a powder material by irradiation with an energy beam, includes a detection unit configured to obtain a state of at least a part of a predetermined region including a melted portion in which the powder material melts by being heated by irradiation with an energy beam, and an output unit configured to output state information based on the state obtained by the detection unit to change a manufacturing condition of the manufacturing apparatus.
    Type: Application
    Filed: June 13, 2018
    Publication date: September 2, 2021
    Applicants: NIKON CORPORATION, TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventor: Koki TAKESHITA
  • Patent number: 11077613
    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.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: August 3, 2021
    Assignee: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Koichi Amaya, Toshihiko Kato, Hideto Matsubara, Mitsuyoshi Yoshida
  • Patent number: 11027488
    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.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: June 8, 2021
    Assignee: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Haruhiko Niitani, Yoshihito Fujita
  • Patent number: 11020906
    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.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: June 1, 2021
    Assignee: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventor: Haruhiko Niitani
  • Patent number: 11007720
    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.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: May 18, 2021
    Assignee: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventor: Haruhiko Niitani
  • Patent number: 10926469
    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.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: February 23, 2021
    Assignee: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Koichi Amaya, Tetsushi Midorikawa, Masaaki Kawaji
  • Publication number: 20210039314
    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.
    Type: Application
    Filed: October 16, 2020
    Publication date: February 11, 2021
    Applicants: Technology Research Association for Future Additive Manufacturing, Kabushiki Kaisha Toshiba, Toshiba Kikai Kabushiki Kaisha
    Inventors: Hiroshi OHNO, Satoshi TSUNO, Mitsuo SASAKI, Tomohiko YAMADA, Yasutomo SHIOMI, Shimpei FUJIMAKI
  • Publication number: 20210004507
    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.
    Type: Application
    Filed: March 8, 2018
    Publication date: January 7, 2021
    Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Noriko YAMAZAKI, Noriko WATARI, Yuzuru OGURA, Toshiya WATANABE
  • Patent number: 10882140
    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.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: January 5, 2021
    Assignee: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Keiichi Noriyama, Hirohisa Kuramoto
  • Patent number: 10850350
    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.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: December 1, 2020
    Assignee: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Go Obara, Hiroshi Ohno
  • Patent number: 10843268
    Abstract: The present invention provides a robust metal lamination-shaped object containing aluminum and having no defect. A metal powder used for forming this metal lamination-shaped object is an aluminum-based powder having a volume-based 50% particle diameter larger than or equal to 10 ?m and smaller than 100 ?m when a particle diameter distribution is measured by a laser diffraction-scattering method, a specific surface area smaller than or equal to 0.5 m2/g, and an oxygen amount larger than or equal to 3 mg/m2 and less than or equal to 10 mg/m2 per unit surface area. A relationship between a hydrogen amount (X ml in standard state) per 100 g of the aluminum-based powder and a specific surface area (Y m2/g), and a relationship between the hydrogen amount (X ml in standard state) and an oxygen amount (Z wt %), are respectively in accordance with formulas: X/Y<151 and Z/X>0.0022.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: November 24, 2020
    Assignee: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING
    Inventors: Yoshiki Hashizume, Isao Murakami, Kenji Muramatsu, Kenta Ishigami
  • Patent number: 10843408
    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.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: November 24, 2020
    Assignees: Technology Research Association for Future Additive Manufacturing, Kabushiki Kaisha Toshiba, Toshiba Kikai Kabushiki Kaisha
    Inventors: Hiroshi Ohno, Satoshi Tsuno, Mitsuo Sasaki, Tomohiko Yamada, Yasutomo Shiomi, Shimpei Fujimaki