公开(公告)号：US20190047229A1

公开(公告)日：2019-02-14

申请号：US16159179

申请日：2018-10-12

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Haruhiko NIITANI

IPC: B29C64/393 ,  B33Y30/00 ,  B23K26/342 ,  B33Y10/00 ,  B29C64/153 ,  B29C64/268

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.

公开(公告)号：US20180339343A1

公开(公告)日：2018-11-29

申请号：US15545989

申请日：2016-12-26

Applicant: Technology Research Association For Future Additive Manufacturing

Inventor： Yoshiki HASHIZUME ,  Isao MURAKAMI ,  Kenji MURAMATSU ,  Kenta ISHIGAMI

IPC: B22F3/12 ,  B29C64/153

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 μm and smaller than 100 μm 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 30 mg/m2 and less than or equal to 100 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 0.0022. A metal lamination-shaped object, that is lamination-shaped by a three-dimensional lamination-shaping apparatus in a powder bed fusion type using the above metal powder, has a hydrogen amount less than or equal to 3 ml in standard state per 100 g, and a relative density more than or equal to 99%.

公开(公告)号：US10112261B2

公开(公告)日：2018-10-30

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 ,  B23K26/34 ,  B23K26/21 ,  B23K26/144 ,  B33Y30/00 ,  B33Y40/00 ,  B23K26/342 ,  B05B7/22

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：US20180141159A1

公开(公告)日：2018-05-24

申请号：US15125454

申请日：2016-03-25

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Haruhiko NIITANI ,  Satoru AKAMA ,  Tomohiro WAKANA

IPC: B23K26/342 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K28/02

CPC classification number: B23K26/342 ,  B22F3/1055 ,  B22F2003/1056 ,  B23K28/02 ,  B29C64/106 ,  B29C64/194 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  Y02P10/295

Abstract: The shaping precision is improved without performing finishing processing. A three-dimensional laminating and shaping apparatus includes a material ejector that ejects a material of a 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 cutter that cuts a bead formed when the material irradiated with the light beam is melted and solidified, and a controller that controls ejection of the material by the material ejector, irradiation with the light beam by the light beam irradiator, and cutting of the bead by the cutter. The cutter cuts an upper surface of the bead by a dimension which is smaller than a laminating height and is ½ or less of a bead thickness.

公开(公告)号：US20180133958A1

公开(公告)日：2018-05-17

申请号：US15124624

申请日：2016-03-25

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Haruhiko NIITANI ,  Yoshihito FUJITA

IPC: B29C64/245 ,  B29C64/153 ,  B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B23K26/342 ,  B23K26/70 ,  B33Y50/02 ,  B29C64/393

CPC classification number: B29C64/245 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2999/00 ,  B23K26/144 ,  B23K26/342 ,  B23K26/703 ,  B29C64/153 ,  B29C64/268 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  Y02P10/295 ,  B22F2203/11 ,  B22F2203/03

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.

公开(公告)号：US09959613B2

公开(公告)日：2018-05-01

申请号：US14889361

申请日：2015-03-20

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Hiroshi Ohno ,  Takashi Obara ,  Yuji Sasaki ,  Mitsuo Sasaki ,  Kazuyuki Masukawa

IPC: G01N21/55 ,  G06T7/00 ,  B29C67/00 ,  B23K26/03 ,  B23K26/06 ,  B23K26/08 ,  B23K26/14 ,  B23K26/342 ,  B23K26/144 ,  B23K26/70 ,  B33Y30/00 ,  B33Y50/02 ,  B22F3/00 ,  G01B11/27 ,  G02B27/14 ,  G06T7/60 ,  B29C64/20 ,  B29C64/386

CPC classification number: G06T7/001 ,  B22F3/008 ,  B23K26/032 ,  B23K26/0643 ,  B23K26/0665 ,  B23K26/0861 ,  B23K26/144 ,  B23K26/1464 ,  B23K26/342 ,  B23K26/703 ,  B29C64/20 ,  B29C64/386 ,  B29C67/00 ,  B33Y30/00 ,  B33Y50/02 ,  G01B11/272 ,  G02B27/144 ,  G06T7/60 ,  G06T2207/30164

Abstract: This specification discloses an optical processing head including a light guide portion that guides, to a process surface, a ray for processing. The light guide portion is further configured to guide, to the process surface, a ray for inspection different in wavelength from the ray for processing. The optical processing head further includes an inspection portion that inspects the state of the process surface based on reflected light of the ray for inspection reflected by the process surface. With the optical processing head, the state of the process surface can be easily inspected even during optical processing.

公开(公告)号：US09863803B2

公开(公告)日：2018-01-09

申请号：US14763153

申请日：2015-03-10

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Yoshihito Fujita ,  Saneyuki Goya

IPC: G02B6/36 ,  G01J1/04 ,  G01J1/02 ,  B23K26/03 ,  B23K26/14

CPC classification number: G01J1/0425 ,  B23K26/032 ,  B23K26/1462 ,  G01J1/0266 ,  G01J1/0422 ,  G02B6/3624

Abstract: This invention is directed to reliably condensing weak light by a sensor arranged at a position spaced apart from a processing position. The optical processing head includes a light guide that guides light for irradiating a processing position. The optical processing head further includes a light transmitter that has one end arranged near the distal end of the light guide and the other end connected to a photodetector, condenses reflected light traveling from the processing position, and transmits it to the photodetector. The optical processing head includes at least one light transmitter as its feature.

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.

公开(公告)号：US20170259337A1

公开(公告)日：2017-09-14

申请号：US15118026

申请日：2015-11-13

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Tetsuyoshi FURUKAWA

IPC: B22F3/105 ,  B33Y30/00 ,  B33Y50/02 ,  B22F3/10

CPC classification number: B22F3/1055 ,  B22F3/1007 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2999/00 ,  B29C64/153 ,  B29C64/321 ,  B29C64/343 ,  B29C64/371 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  Y02P10/295 ,  B22F2201/10 ,  B22F2201/02 ,  B22F2201/20

Abstract: A powder is supplied to a shaping chamber without interrupting processing of shaping a three-dimensional laminated and shaped object. A three-dimensional laminating and shaping apparatus includes a shaping chamber in which a three-dimensional laminated and shaped object is shaped, a powder storage that stores a powder conveyed to the shaping chamber, an intermediate powder storage that is provided between the shaping chamber and the powder storage, is connected to the shaping chamber via a first valve, is connected to the powder storage via a second valve, and temporarily stores the powder, a valve controller that controls opening/closing of each of the first valve and the second valve, and an atmosphere controller that controls an atmosphere in the intermediate powder storage and an atmosphere in the shaping chamber.

公开(公告)号：US20170087666A1

公开(公告)日：2017-03-30

申请号：US14889369

申请日：2015-03-20

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Mitsuo SASAKI ,  Hiroshi OHNO

IPC: B23K26/144 ,  B29C35/08 ,  B23K26/03 ,  B23K26/06 ,  B23K26/70

CPC classification number: B23K26/144 ,  B22F3/105 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2999/00 ,  B23K26/032 ,  B23K26/0665 ,  B23K26/702 ,  B29C35/0805 ,  B29C64/153 ,  B29C64/209 ,  B29C67/00 ,  B29C2035/0838 ,  B29K2105/251 ,  B33Y30/00 ,  B33Y50/02 ,  Y02P10/295 ,  B22F3/004

Abstract: This specification discloses a processing nozzle for efficiently performing supply of a powder serving as a material used for processing using an energy line. The processing nozzle includes a powder ejector that ejects a powder serving as a processing material toward a molten pool formed on a process surface by an energy line. The processing nozzle further includes an adjuster that adjusts, in accordance with the shape of the molten pool, the shape and/or position of a powder spot formed by the powder ejector.