Patents by Inventor Katsuya Nishiguchi
Katsuya Nishiguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11794273Abstract: Provided are a friction stir welding apparatus and a friction stir welding method that achieve highly accurate and highly reliable joining while minimizing an effect of bending of a pressing force receiving portion (carrying table) as a result of a press by a joining tool unit. The friction stir welding apparatus joins joining target members by friction stir welding. The friction stir welding apparatus is characterized by including: an apparatus main body; a control device that controls an operation of the friction stir welding apparatus; a C-shaped frame connected to the apparatus main body via a first vertical movement drive mechanism unit; a holder unit connected to one end of the C-shaped frame via a second vertical movement drive mechanism unit; and a joining tool held by the holder unit.Type: GrantFiled: March 27, 2019Date of Patent: October 24, 2023Assignee: Hitachi Power Solutions Co., Ltd.Inventors: Tomio Odakura, Hiroki Abe, Akihiro Satou, Kohei Funahara, Koichi Ishiguro, Shun Shinohara, Yukihiro Sugimoto, Katsuya Nishiguchi, Koujirou Tanaka, Yasuhiro Morita
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Patent number: 11285562Abstract: A friction stir welding apparatus and method maintains a depth of a welded part constant without varying a depth-direction position of a welding tool leading end part relative to welded members. A control device controls an operation of the friction stir welding apparatus, and a holder unit is connected to a swing mechanism unit via a revolving mechanism section, and a welding tool is held to the holder unit. The control device has a first welding mode in which friction stir welding is performed on the basis of a welding condition signal for deciding a welding condition of the welding tool, a swing control signal for controlling the swing mechanism unit, a first hold position decision signal, and a second welding mode in which friction stir welding is performed on the basis of the welding condition signal, the swing control signal, and a second hold position decision signal.Type: GrantFiled: March 27, 2019Date of Patent: March 29, 2022Assignees: HITACHI POWER SOLUTIONS CO., LTD., MAZDA MOTOR CORPORATIONInventors: Tomio Odakura, Hiroki Abe, Akihiro Satou, Kohei Funahara, Koichi Ishiguro, Shun Shinohara, Yukihiro Sugimoto, Katsuya Nishiguchi, Koujirou Tanaka, Yasuhiro Morita
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Patent number: 11046021Abstract: Disclosed is a method for joining a metal member and a thermosetting resin member together with a thermoplastic resin interposed therebetween.Type: GrantFiled: March 27, 2017Date of Patent: June 29, 2021Assignee: MAZDA MOTOR CORPORATIONInventors: Katsuya Nishiguchi, Koujirou Tanaka, Satoko Shimada, Yasuhiro Morita, Tsuguhisa Miyamoto, Yushi Matsuda, Yukihiro Sugimoto
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Publication number: 20210138576Abstract: A friction stir welding apparatus and method maintains a depth of a welded part constant without varying a depth-direction position of a welding tool leading end part relative to welded members. A control device controls an operation of the friction stir welding apparatus, and a holder unit is connected to a swing mechanism unit via a revolving mechanism section, and a welding tool is held to the holder unit. The control device has a first welding mode in which friction stir welding is performed on the basis of a welding condition signal for deciding a welding condition of the welding tool, a swing control signal for controlling the swing mechanism unit, a first hold position decision signal, and a second welding mode in which friction stir welding is performed on the basis of the welding condition signal, the swing control signal, and a second hold position decision signal.Type: ApplicationFiled: March 27, 2019Publication date: May 13, 2021Inventors: Tomio ODAKURA, Hiroki ABE, Akihiro SATOU, Kohei FUNAHARA, Koichi ISHIGURO, Shun SHINOHARA, Yukihiro SUGIMOTO, Katsuya NISHIGUCHI, Koujirou TANAKA, Yasuhiro MORITA
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Publication number: 20210086293Abstract: Provided are a friction stir welding apparatus and a friction stir welding method that achieve highly accurate and highly reliable joining while minimizing an effect of bending of a pressing force receiving portion (carrying table) as a result of a press by a joining tool unit. The friction stir welding apparatus joins joining target members by friction stir welding. The friction stir welding apparatus is characterized by including: an apparatus main body; a control device that controls an operation of the friction stir welding apparatus; a C-shaped frame connected to the apparatus main body via a first vertical movement drive mechanism unit; a holder unit connected to one end of the C-shaped frame via a second vertical movement drive mechanism unit; and a joining tool held by the holder unit.Type: ApplicationFiled: March 27, 2019Publication date: March 25, 2021Inventors: Tomio ODAKURA, Hiroki ABE, Akihiro SATOU, Kohei FUNAHARA, Koichi ISHIGURO, Shun SHINOHARA, Yukihiro SUGIMOTO, Katsuya NISHIGUCHI, Koujirou TANAKA, Yasuhiro MORITA
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Publication number: 20190077089Abstract: Disclosed is a method for joining a metal member and a thermosetting resin member together with a thermoplastic resin interposed therebetween.Type: ApplicationFiled: March 27, 2017Publication date: March 14, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Katsuya NISHIGUCHI, Koujirou TANAKA, Satoko SHIMADA, Yasuhiro MORITA, Tsuguhisa MIYAMOTO, Yushi MATSUDA, Yukihiro SUGIMOTO
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Publication number: 20160325488Abstract: In thermal pressure joining of joining a metal member to a resin member, a metal member (11) and a resin member (12) are stacked one on the other, a press member (160) applies heat and pressure locally on the metal member to soften and melt the resin member, the resin member is then solidified, the press member (160) is pressed into the metal member (11) to a depth shallower than a joint boundary (13) between the metal and resin members to deform a portion (110) of the metal member directly under the press member such that the portion protrudes toward the resin member, and resin (121) melted on a surface of the resin member in a region (60) of the joint boundary directly under the press member flows to an outer periphery (61) of the region (60).Type: ApplicationFiled: January 7, 2015Publication date: November 10, 2016Applicant: MAZDA MOTOR CORPORATIONInventors: Koujirou TANAKA, Katsuya NISHIGUCHI, Hirosuke SUMIDA, Hiroyuki KAI, Yushi MATSUDA, Yuki KODA, Megumi KOBAYASHI, Tsuguhisa MIYAMOTO, Yukihiro SUGIMOTO, Nobuo SAKATE
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Patent number: 8502105Abstract: The joining method includes a step of lapping the aluminum alloy plate and the plated steel plate via adhesive, a pre-heating step of clamping both metal plates lapped in the lapping step between a pair of electrodes for spot welding and applying pressure thereto, and applying a current between the pair of electrodes, a cooling step of pressurizing both metal plates at a pressing force higher than that at the start of the pre-heating step in a state where conduction between the electrodes is stopped, and continuing this pressurization over a predetermined cooling time, and a welding step of pressurizing both metal plates at a pressing force higher than that at the start of the pre-heating step, and welding both of the metal plates by applying a current higher than the conduction current value in the pre-heating step between the pair of electrodes.Type: GrantFiled: October 21, 2010Date of Patent: August 6, 2013Assignees: Mazda Motor Corporation, Kobe Steel, Ltd.Inventors: Koujirou Tanaka, Katsuya Nishiguchi, Seiji Sasabe
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Patent number: 8430437Abstract: A crash can is made of aluminum-alloy casting and provided between a side frame extending in a vehicle longitudinal direction at a side portion of a vehicle and an end portion of a bumper reinforcement extending in a vehicle width direction. The crash can comprises a hollow tube portion extending in the vehicle longitudinal direction and having a cross-shaped section. At least one of an outwardly-projecting corner portion and an inwardly-projecting corner portion of the tube portion is formed by a groove such that a thickness thereof is thinner than that of the other portion of the tube portion. Accordingly, an impact which a vehicle body or a passenger may receive in a vehicle collision can be reduced by the crash can.Type: GrantFiled: January 13, 2012Date of Patent: April 30, 2013Assignee: Mazda Motor CorporationInventors: Motoyasu Asakawa, Katsuya Nishiguchi, Takahiro Kimura, Nobuyuki Oda, Kojiro Tanaka
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Publication number: 20120205927Abstract: A crash can is made of aluminum-alloy casting and provided between a side frame extending in a vehicle longitudinal direction at a side portion of a vehicle and an end portion of a bumper reinforcement extending in a vehicle width direction. The crash can comprises a hollow tube portion extending in the vehicle longitudinal direction and having a cross-shaped section. At least one of an outwardly-projecting corner portion and an inwardly-projecting corner portion of the tube portion is formed by a groove such that a thickness thereof is thinner than that of the other portion of the tube portion. Accordingly, an impact which a vehicle body or a passenger may receive in a vehicle collision can be reduced by the crash can.Type: ApplicationFiled: January 13, 2012Publication date: August 16, 2012Applicant: MAZDA MOTOR CORPORATIONInventors: Motoyasu Asakawa, Katsuya Nishiguchi, Takahiro Kimura, Nobuyuki Oda, Kojiro Tanaka
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Publication number: 20110097594Abstract: The joining method of the present invention includes a lapping step of lapping the aluminum alloy plate (1) and the plated steel plate (2) via the adhesive (5), a pre-heating step of clamping both of the metal plates (1, 2) that have been lapped in the lapping step between a pair of electrodes (7, 7) for spot welding and applying pressure thereto, and applying a current between the pair of electrodes (7, 7), a cooling step of pressurizing, after the pre-heating step, both of the metal plates (1, 2) at a pressing force which is higher than that at the start of the pre-heating step in a state where conduction between the electrodes (7, 7) is stopped, and continuing this pressurization over a predetermined cooling time, and a welding step of pressurizing, after the cooling step, both of the metal plates (1, 2) at a pressing force which is higher than that at the start of the pre-heating step, and welding both of the metal plates (1, 2) by applying a current which is higher than the conduction current value in thType: ApplicationFiled: October 21, 2010Publication date: April 28, 2011Applicants: MAZDA MOTOR CORPORATION, KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Koujirou TANAKA, Katsuya NISHIGUCHI, Seiji SASABE
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Patent number: 7918493Abstract: A main body of an impact energy absorber is formed by integrally molding a deformable portion and a plurality of deformation controlling portions which are adapted to control the direction of plastic deformation of the deformable portion. The deformation controlling portions have such a configuration and shape that, when a compression load equal to or greater than a predetermined value is input to the main body in a tube axis direction, the deformable portion undergoes plastic deformation in at least one of a radially outward direction and a radially inward direction of the main body concurrently with the compressive plastic deformation in the tube axis direction.Type: GrantFiled: August 6, 2009Date of Patent: April 5, 2011Assignee: Mazda Motor CorporationInventors: Katsuya Nishiguchi, Toshitsugu Ueoka, Kenichi Yamamoto, Kenji Murase
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Patent number: 7832615Abstract: A metal plating applied on a joining portion of a first metal member is heated before a rotating tool under rotation being pressed against a second metal member. Herein, the rotating tool under rotation starts being pressed against the second metal member when the metal plating is heated at least up to a specified temperature that is high enough to make the metal plating in a softened solid state. Thereby, a properly-high joining strength can be provided in a frictional joining of a metal member with a metal plating thereon and another metal member.Type: GrantFiled: April 2, 2007Date of Patent: November 16, 2010Assignee: Mazda Motor CorporationInventors: Toshiyuki Gendou, Katsuya Nishiguchi
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Publication number: 20100032970Abstract: A main body of an impact energy absorber is formed by integrally molding a deformable portion and a plurality of deformation controlling portions which are adapted to control the direction of plastic deformation of the deformable portion. The deformation controlling portions have such a configuration and shape that, when a compression load equal to or greater than a predetermined value is input to the main body in a tube axis direction, the deformable portion undergoes plastic deformation in at least one of a radially outward direction and a radially inward direction of the main body concurrently with the compressive plastic deformation in the tube axis direction.Type: ApplicationFiled: August 6, 2009Publication date: February 11, 2010Applicant: MAZDA MOTOR CORPORATIONInventors: Katsuya NISHIGUCHI, Toshitsugu UEOKA, Kenichi YAMAMOTO, Kenji MURASE
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Patent number: 7523851Abstract: In the third step of joining of the metal members, the pressing force of the rotational tool under rotation is maintained at the third pressing force that is smaller than the second pressing force until a specified period of time elapses after the tip of the pin portion of the rotational tool has reached the specified point that is at a distance from the joining face. Accordingly, the proper plastic flow of the metal member can be generated and thereby the joining strength with a sufficient period of time of agitation can be ensured, by maintaining a high temperature enough to soften the metal member and by preventing the rotational tool from coming into the metal member too deeply or from penetrating the metal member.Type: GrantFiled: December 7, 2005Date of Patent: April 28, 2009Assignee: Mazda Motor CorporationInventors: Toshiyuki Gendou, Yukihiro Sugimoto, Katsuya Nishiguchi, Kenji Takase, Yohei Shoji
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Patent number: 7360677Abstract: In a spot joining method and apparatus, pressing force of a rotating tool is maintained at a first pressing force, the frictional heat due to the rotation of the rotating tool is generated on a surface of an aluminum plate, and the aluminum plate is softened by this frictional heat, so as to ensure the centering of a pin portion of the rotating tool. Thus, even if the pin of the rotating tool is short, a stable joining position can be obtained, so that the aluminum material can be prevented from accumulating on the rotating tool, the appearance of joining surfaces can be prevented from deteriorating, and the sufficient joining strength can be obtained.Type: GrantFiled: December 1, 2004Date of Patent: April 22, 2008Assignee: Mazda Motor CorporationInventors: Toshiyuki Gendou, Kenji Takase, Katsuya Nishiguchi
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Patent number: 7353977Abstract: An aluminum plate and a steel plate are lapped. A rotating tool is placed on the aluminum plate, and then a pressing force and a rotational force around a pressing axis of the rotating tool are applied to the aluminum plate and the steel plate. A zinc plating layer having oxidation-prevention function is formed on the surface of the steel plate in advance. When joining the both plates, an oxidation film formed on the aluminum plate is destroyed and the zinc plating layer is pushed out outward from a joining portion, by applying the above pressing force and frictional heat and plastic flow due to the rotation of the rotating tool. Thereby, respective new uncovered surfaces of the both plates are directly contacted.Type: GrantFiled: June 9, 2004Date of Patent: April 8, 2008Assignee: Mazda Motor CorporationInventors: Katsuya Nishiguchi, Yukihiro Sugimoto, Motoyasu Asakawa, Tomoyuki Iwashita, Kotoyoshi Murakami, Toshiyuki Gendou
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Publication number: 20070241167Abstract: A metal plating applied on a joining portion of a first metal member is heated before a rotating tool under rotation being pressed against a second metal member. Herein, the rotating tool under rotation starts being pressed against the second metal member when the metal plating is heated at least up to a specified temperature that is high enough to make the metal plating in a softened solid state. Thereby, a properly-high joining strength can be provided in a frictional joining of a metal member with a metal plating thereon and another metal member.Type: ApplicationFiled: April 2, 2007Publication date: October 18, 2007Inventors: Toshiyuki Gendou, Katsuya Nishiguchi
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Publication number: 20070039154Abstract: The first and second metal members are joined by being pushed against the interposed member by the rotating tool in a state in which part of the surface of the second metal member corresponding to the joining portion contacts the contacting face of the interposed member that has a larger area than the an area of the tip of the rotating tool. Thus, the first and second metal members can be pressed against the receiving tool of the joining gun via the interposed member. Accordingly, there can be provided a high-quality superior joining product.Type: ApplicationFiled: July 19, 2006Publication date: February 22, 2007Applicant: MAZDA MOTOR CORPORATIONInventors: Toshiyuki Gendou, Katsuya Nishiguchi, Motoyasu Asakawa, Kenji Takase, Yohei Shoji
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Publication number: 20060138198Abstract: In the third step of joining of the metal members, the pressing force of the rotational tool under rotation is maintained at the third pressing force that is smaller than the second pressing force until a specified period of time elapses after the tip of the pin portion of the rotational tool has reached the specified point that is at a distance from the joining face. Accordingly, the proper plastic flow of the metal member can be generated and thereby the joining strength with a sufficient period of time of agitation can be ensured, by maintaining a high temperature enough to soften the metal member and by preventing the rotational tool from coming into the metal member too deeply or from penetrating the metal member.Type: ApplicationFiled: December 7, 2005Publication date: June 29, 2006Applicant: MAZDA MOTOR CORPORATIONInventors: Toshiyuki Gendou, Yukihiro Sugimoto, Katsuya Nishiguchi, Kenji Takase, Yohei Shoji