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81.发明授权公开(公告)号：US10217599B2
公开(公告)日：2019-02-26
申请号：US14785730
申请日：2015-01-09
Inventor： Takashi Sato
IPC: H01J37/065 , H01J37/06 , H01J37/304 , B22F3/105 , H01J3/08 , H01J3/12 , B33Y30/00
Abstract: When an emission current is changed, a decrease in brightness of an electron beam is prevented. An electron gun includes a cathode that emits thermoelectrons, a Wehnelt electrode that focuses the thermoelectrons, a control electrode that extracts the thermoelectrons from a distal end of said cathode, an anode that accelerates the thermoelectrons and irradiates a powder with the thermoelectrons as an electron beam, and an optimum condition collection controller that changes at least one of a bias voltage to be applied to the Wehnelt electrode and a control electrode voltage to be applied to the control electrode, and decides a combination of the bias voltage and the control electrode voltage at which the brightness of the electron beam reaches a peak.
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公开(公告)号：US10174183B2
公开(公告)日：2019-01-08
申请号：US14908510
申请日：2015-03-09
Inventor： Yasuhiro Nagai , Kosuke Takeshita , Yoshikazu Ooba , Satoshi Imamura , Toshimitsu Okane
IPC: B22C1/22 , B22C9/02 , B22C9/12 , C08K9/04 , B29C64/165 , B33Y10/00 , B33Y30/00 , B33Y70/00 , B29B15/10 , B29C33/38 , C03C1/02 , C03C8/02 , C03C8/14 , C09D161/06 , C09D171/14 , B29K105/16 , B29K509/00
Abstract: In order to well perform recoating regardless of the type of granular material and reuse a refractory aggregate in an unprinted portion without any regeneration process in the manufacture of a three-dimensional lamination-shaped mold, this invention provides a granular material for use in shaping a three-dimensional laminated mold, which is coated with an acid as a catalyst which activates and cures an organic binder for binding the granular material. The acid contains at least one of sulfuric acid, phosphoric acid, a sulfonic acid and a carboxylic acid, and is one of a mixture of sulfuric acid and another acid, phosphoric acid only, a mixture of phosphoric acid and another acid, sulfonic acid only, a mixture of sulfonic acid and another acid and a mixture of a carboxylic acid and another acid.
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公开(公告)号：US20180339360A1
公开(公告)日：2018-11-29
申请号：US15546248
申请日：2016-12-16
Inventor： Kazuya GOTO
Abstract: Excessive evaporation of powder is prevented. A three-dimensional shaping apparatus includes an electron gun that generates an electron beam, at least one deflector that deflects the electron beam one- or two-dimensionally, at least one lens that is provided between the electron gun and the deflector, and that focuses the electron beam, and a controller that controls the deflection direction and scanning speed of the deflector, the deflector scanning and irradiating the predetermined regions. The three-dimensional shaping apparatus further includes a controller that controls the cross-sectional diameter of the electron beam. The process step of melting the powder is divided into two process steps, namely the first melting step and the second melting step in the sequential order of the process steps. In the first melting step, the powder is given the amount of unit-area heat necessary to raise the temperature of the powder from its preheating temperature to its melting point. In the second melting step, the powder is given the amount of unit-area heat equal to or larger than the amount of unit-area heat necessary for the powder to melt by receiving its melting heat. In the second melting step, furthermore, the cross-sectional diameter of the beam is increased so that the powder is given a smaller amount of unit-area amount of unit-area power of the electron beam in the second melting step than in the first melting step.
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公开(公告)号：US20180333775A1
公开(公告)日：2018-11-22
申请号：US15545995
申请日：2016-12-26
Inventor： Motonori NISHIDA , Yuji SUGITANI , Akihiko CHIBA , Youhei DAINO
CPC classification number: B22F1/025 , B22F1/00 , B22F1/0011 , B22F1/02 , B22F3/105 , B22F3/1055 , B22F3/16 , B22F2301/15 , B22F2304/10 , B33Y70/00
Abstract: The present invention relates to a metal powder which shortens a lamination-shaping time and facilitates the removal of an unnecessary powder after lamination-shaping by decreasing a pre-sintering temperature by using a processed metal powder. This metal powder for lamination-shaping is obtained by coating the surface of a powder of a nickel-based alloy with a conductive material. When the powder is the powder of the nickel-based alloy containing nickel as a main component and chromium and iron as primary subcomponents, the powder is coated, e.g., plated with nickel as the conductive material. The particle diameter range of the powder of the nickel-based alloy is 10 to 200 μm, preferably 25 to 150 μm, and more preferably 45 to 105 μm. The thickness range of the conductive material is 0.1 to 1 μm, and preferably 0.3 μm or more.
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公开(公告)号：US10131015B2
公开(公告)日：2018-11-20
申请号：US15119606
申请日：2015-12-25
Inventor： Kazuhiro Honda
Abstract: A recoater that is two-dimensionally driven is cooled by a simple structure. A three-dimensional laminating and shaping apparatus includes at least one material spreader that spreads a material of a three-dimensional laminated and shaped object, a temperature measurer that measures a temperature of the material spreader, at least one cooler that cools the material spreader and is provided at a standby position at which the material spreader stands by while the material is not spread, and a controller that controls the material spreader. The controller moves the material spreader to the standby position to bring the material spreader and the cooler into contact with each other.
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Patent Agency Ranking
公开(公告)号：US20180169938A1
公开(公告)日：2018-06-21
申请号：US15119575
申请日：2015-11-13
Inventor： Takanari INENAGA , Tetsuyoshi FURUKAWA
IPC: B29C64/153 , B29C64/268 , B29C64/118 , B29C64/147 , B29C64/176
CPC classification number: B29C64/153 , B22F3/1055 , B22F2003/1056 , B29C64/118 , B29C64/147 , B29C64/176 , B29C64/268 , B29C67/00 , B33Y10/00 , B33Y30/00 , Y02P10/295
Abstract: The shaping speed of a three-dimensional laminated and shaped object by a three-dimensional laminating and shaping apparatus is increased. There is provided a three-dimensional laminating and shaping apparatus for shaping a three-dimensional laminated and shaped object by irradiating a powder with an electron beam. The three-dimensional laminating and shaping apparatus includes a shaping box in which the three-dimensional laminated and shaped object is shaped. The three-dimensional laminating and shaping apparatus includes a heating unit for preheating that is arranged outside the shaping box. The heating unit for preheating is arranged on a side surface side of the shaping box. Furthermore, the heating units for preheating are arranged to surround the shaping box from side surfaces.
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公开(公告)号：US20180147779A1
公开(公告)日：2018-05-31
申请号：US15123455
申请日：2016-03-25
Inventor： Masahiro YAMADA , Takayuki KATAOKA
IPC: B29C64/153 , B29C64/205 , B29C64/245 , B29C64/268 , B33Y30/00
CPC classification number: B29C64/153 , B22F3/1055 , B22F2003/1056 , B22F2003/1058 , B23K15/0086 , B23K15/0093 , B23K15/06 , B29C64/205 , B29C64/245 , B29C64/268 , B29C64/393 , B33Y10/00 , B33Y30/00 , B33Y50/02 , Y02P10/295
Abstract: This invention effectively suppresses a decrease in shaping accuracy based on a difference in thermal expansion coefficient between a three-dimensional laminated and shaped object and shaping plate. A three-dimensional laminating and shaping apparatus includes a linear funnel that recoats the material of a three-dimensional laminated and shaped object. 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 a shaping base material on which the three-dimensional laminated and shaped object is to be shaped. The thermal expansion coefficients of the shaping base material and three-dimensional laminated and shaped object are equal or have a difference not more than a predetermined value.
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公开(公告)号：US20180147666A1
公开(公告)日：2018-05-31
申请号：US15122938
申请日：2016-03-15
Inventor： Hiroshi OHNO , Mitsuo SASAKI , Kazuyuki MASUKAWA , Yuji SASAKI , Satoshi TSUNO , Takashi OBARA
IPC: B23K26/342 , B23K26/03 , B23K26/046 , B23K26/06 , B23K26/067 , B23K26/144 , B23K26/14
CPC classification number: B23K26/342 , B23K26/032 , B23K26/046 , B23K26/0643 , B23K26/0648 , B23K26/0673 , B23K26/144 , B23K26/1464 , B33Y30/00 , B33Y40/00
Abstract: An overall apparatus is downsized by reducing the size of a light beam branching structure. There is provided an optical processing head including an optical element group that guides a processing light beam from a light source to a process surface, and a light beam branching portion that branches reflected light of the processing light beam from the process surface and an observation light beam for observing a state of the process surface. The light beam branching portion is arranged on a light beam path of the processing light beam, and includes, between the optical element group and the process surface, a half mirror that guides the observation light beam to an observation optical system.
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公开(公告)号：US20180147654A1
公开(公告)日：2018-05-31
申请号：US15122836
申请日：2016-03-25
Inventor： Shinichi KITAMURA , Hironobu MANABE
CPC classification number: B23K15/0086 , B22F3/1055 , B22F2003/1056 , B23K15/0026 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B33Y50/02 , Y02P10/295
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：US20180015565A1
公开(公告)日：2018-01-18
申请号：US15120643
申请日：2015-12-07
Inventor： Kazuya GOTO
CPC classification number: B23K15/0086 , B22F3/1055 , B22F2003/1056 , B23K15/002 , B23K15/02 , B29C64/153 , B29C64/268 , B29C64/393 , B33Y30/00 , B33Y50/02 , Y02P10/295
Abstract: Overheating of and unintended melting of powder is suppressed, and thus the shaping accuracy is improved. A three-dimensional shaping apparatus includes an electron gun that generates an electron beam, at least one primary deflector that deflects the electron beam one- or two-dimensionally, at least one lens that is provided between the electron gun and the primary deflector and focuses the electron beam, a secondary deflector that is provided between the electron gun and the primary deflector, and deflects the electron beam one- or two-dimensionally, and a controller that controls the deflection directions and scanning speeds of the primary deflector and the second deflector. The controller controls the deflection direction and scanning speed of the second deflector while the scanning speed of the primary deflector is lower than a predetermined speed.
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