Patents by Inventor Kazuyuki OGUSU
Kazuyuki OGUSU 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: 10843293Abstract: A laser welding method for welding a plurality of objects to be welded by applying a laser beam scanned by a scanning unit to the plurality of objects to be welded while moving the scanning unit in a welding direction along a welding path, the laser welding method including the steps of: performing a step of preliminary-fixation-welding on a predetermined place in the welding direction of the objects to be welded, and a step of main-welding on a place corresponding to the preliminarily-fixed place of the object to be welded within a scanning range of the scanning unit while moving the scanning unit. Further, when the place corresponding to the preliminarily-fixed place of the object to be welded is main-welded, the place is main-welded in a state where both sides of the place to be main-welded are restrained.Type: GrantFiled: January 19, 2016Date of Patent: November 24, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Hisada, Toru Hioki, Kazuyuki Ogusu
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Patent number: 10478966Abstract: A workpiece support system includes: a workpiece support device that supports a workpiece by a support body having a support that comes in contact with the workpiece; and a robot that is separately provided outside the workpiece support device and moves the support, wherein the support is configured to be movable within a predetermined range and lockable at an arbitrary position, and wherein, by grasping a part of the locked support body, the robot unlocks the support and moves the unlocked support according to the shape of the workpiece.Type: GrantFiled: November 30, 2016Date of Patent: November 19, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomohiko Sekiguchi, Masataka Mizuno, Kazuyuki Ogusu, Kenichi Asakuma, Kimihiro Nanaeda
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Patent number: 10456865Abstract: A welding method for joining together a plurality of welding objects by overlapping the plurality of welding objects and performing laser welding includes forming a weld by forming a plurality of nuggets along a virtual closed curve on the welding objects, by laser welding. A ratio of a diameter of the nuggets to a pitch dimension between the nuggets that are adjacent to each other is larger than ½ and no more than 1.Type: GrantFiled: April 20, 2015Date of Patent: October 29, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Hisada, Shuhei Ogura, Junichiro Makino, Kazuyuki Ogusu, Masahiro Nakata
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Patent number: 10267905Abstract: Provided is a measuring method for measuring laser scanning velocity for a laser beam machining apparatus. The laser beam machining apparatus includes a mirror, and is configured to process a work by irradiating laser. The laser is irradiated by operating the mirror. The measuring method includes measuring processing sound of the work by the laser using the laser beam machining apparatus. Further, the measuring method includes calculating scanning velocity of the laser by analyzing a frequency of the measured processing sound using the laser beam machining apparatus.Type: GrantFiled: September 17, 2015Date of Patent: April 23, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Hisada, Daisuke Asami, Ko Nakamura, Kazuyuki Ogusu
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Patent number: 10076807Abstract: A welding method according to the invention is a welding method in which welding is performed by emitting a high-energy beam onto a welding object that includes a plurality of overlapped metal sheets. This welding method includes forming a tack weld nugget at a welding point on the welding object, and forming a plurality of final weld nuggets along a virtual closed curve that encircles the tack weld nugget, while leaving the tack weld nugget, at the welding point.Type: GrantFiled: March 4, 2016Date of Patent: September 18, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Hisada, Toru Hioki, Kazuyuki Ogusu, Shuichi Matsumoto
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Patent number: 9962789Abstract: A welding method according to the present invention is a welding method for irradiating an object to be welded including a plurality of metallic plates that are stacked on each other with a high energy beam and performing welding. The welding method includes: forming a plurality of tack weld nuggets along a virtual closed curve on a part to be welded of the object to be welded; and forming a plurality of main weld nuggets so that the main weld nuggets overlap the plurality of respective tack weld nuggets.Type: GrantFiled: March 3, 2016Date of Patent: May 8, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Hisada, Toru Hioki, Shuichi Matsumoto, Kazuyuki Ogusu
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Patent number: 9776280Abstract: A laser welding method is capable of easily restraining poor welding when spatters adhere to a protective glass of an optical system. The laser welding method includes a step of calculating a decrease-amount of the laser power before laser welding is performed by irradiating a welding portion of a workpiece with the laser beam having a predetermined power. The step of calculating the decrease-amount includes irradiating the welding portion with an inspecting laser beam having a power smaller than the predetermined power, receiving a return beam of the inspecting laser beam, measuring an intensity of the return beam, and comparing the intensity of the return beam with a standard intensity to calculate an amount of decrease in power of the inspecting laser beam at the welding portion.Type: GrantFiled: November 6, 2015Date of Patent: October 3, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shuhei Ogura, Kazuyuki Ogusu, Jyunichiro Makino, Hiroaki Kishi, Kousuke Tsuji
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Publication number: 20170157765Abstract: A workpiece support system includes: a workpiece support device that supports a workpiece by a support body having a support that comes in contact with the workpiece; and a robot that is separately provided outside the workpiece support device and moves the support, wherein the support is configured to be movable within a predetermined range and lockable at an arbitrary position, and wherein, by grasping a part of the locked support body, the robot unlocks the support and moves the unlocked support according to the shape of the workpiece.Type: ApplicationFiled: November 30, 2016Publication date: June 8, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomohiko SEKIGUCHI, Masataka MIZUNO, Kazuyuki OGUSU, Kenichi ASAKUMA, Kimihiro NANAEDA
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Patent number: 9636781Abstract: A laser welding method includes: projecting a laser beam onto irradiation regions on plural metallic workpieces such that a weld section is formed when the workpieces are joined by laser welding, the weld section being formed of plural nuggets, and each of the irradiation regions being formed with each of the nuggets. The nuggets are sequentially formed by sequentially projecting the laser beam onto the irradiation regions that respectively correspond to the nuggets. The laser beam is projected onto each of the irradiation regions such that an amount of input heat from the laser beam that is projected onto each of the irradiation regions to the workpiece is reduced as the nuggets are sequentially formed.Type: GrantFiled: May 19, 2015Date of Patent: May 2, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei Hisada, Toru Hioki, Junichiro Makino, Kazuyuki Ogusu, Masahiro Nakata
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Publication number: 20160288262Abstract: A welding method according to the invention is a welding method in which welding is performed by emitting a high-energy beam onto a welding object that includes a plurality of overlapped metal sheets. This welding method includes forming a tack weld nugget at a welding point on the welding object, and forming a plurality of final weld nuggets along a virtual closed curve that encircles the tack weld nugget, while leaving the tack weld nugget, at the welding point.Type: ApplicationFiled: March 4, 2016Publication date: October 6, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei HISADA, Toru HIOKI, Kazuyuki OGUSU, Shuichi MATSUMOTO
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Publication number: 20160288261Abstract: A welding method according to the present invention is a welding method for irradiating an object to be welded including a plurality of metallic plates that are stacked on each other with a high energy beam and performing welding. The welding method includes: forming a plurality of tack weld nuggets along a virtual closed curve on a part to be welded of the object to be welded; and forming a plurality of main weld nuggets so that the main weld nuggets overlap the plurality of respective tack weld nuggets.Type: ApplicationFiled: March 3, 2016Publication date: October 6, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei HISADA, Toru HIOKI, Shuichi MATSUMOTO, Kazuyuki OGUSU
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Publication number: 20160236297Abstract: A laser welding method for welding a plurality of objects to be welded by applying a laser beam scanned by a scanning unit to the plurality of objects to be welded while moving the scanning unit in a welding direction along a welding path, the laser welding method including the steps of: performing a step of preliminary-fixation-welding on a predetermined place in the welding direction of the objects to be welded, and a step of main-welding on a place corresponding to the preliminarily-fixed place of the object to be welded within a scanning range of the scanning unit while moving the scanning unit. Further, when the place corresponding to the preliminarily-fixed place of the object to be welded is main-welded, the place is main-welded in a state where both sides of the place to be main-welded are restrained.Type: ApplicationFiled: January 19, 2016Publication date: August 18, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kohei HISADA, Toru HIOKI, Kazuyuki OGUSU
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Publication number: 20160136756Abstract: A laser welding method is capable of easily restraining poor welding when spatters adhere to a protective glass of an optical system. The laser welding method includes a step of calculating a decrease-amount of the laser power before laser welding is performed by irradiating a welding portion of a workpiece with the laser beam having a predetermined power. The step of calculating the decrease-amount includes irradiating the welding portion with an inspecting laser beam having a power smaller than the predetermined power, receiving a return beam of the inspecting laser beam, measuring an intensity of the return beam, and comparing the intensity of the return beam with a standard intensity to calculate an amount of decrease in power of the inspecting laser beam at the welding portion.Type: ApplicationFiled: November 6, 2015Publication date: May 19, 2016Inventors: Shuhei OGURA, Kazuyuki OGUSU, Jyunichiro MAKINO, Hiroaki KISHI, Kousuke TSUJI
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Publication number: 20160101487Abstract: A spot welding electrode includes a copper alloy, and a sintered tungsten alloy disposed in a tip portion of the spot welding electrode, the tip portion of the spot welding electrode being brought into contact with an object to be welded. The sintered tungsten alloy is connected only at a single flat surface to the copper alloy. A thermal conductivity of the spot welding electrode is within a range from 60 W/mK to 120 W/mK.Type: ApplicationFiled: October 1, 2015Publication date: April 14, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shuhei Ogura, Kazuyuki Ogusu
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Publication number: 20160091600Abstract: Provided is a measuring method for measuring laser scanning velocity for a laser beam machining apparatus. The laser beam machining apparatus includes a mirror, and is configured to process a work by irradiating laser. The laser is irradiated by operating the mirror. The measuring method includes measuring processing sound of the work by the laser using the laser beam machining apparatus. Further, the measuring method includes calculating scanning velocity of the laser by analyzing a frequency of the measured processing sound using the laser beam machining apparatus.Type: ApplicationFiled: September 17, 2015Publication date: March 31, 2016Applicant: Toyota Jidosha Kabushiki KaishaInventors: Kohei HISADA, Daisuke Asami, Ko Nakamura, Kazuyuki Ogusu
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Publication number: 20150336212Abstract: A laser welding method includes: projecting a laser beam onto irradiation regions on plural metallic workpieces such that a weld section is formed when the workpieces are joined by laser welding, the weld section being formed of plural nuggets, and each of the irradiation regions being formed with each of the nuggets. The nuggets are sequentially formed by sequentially projecting the laser beam onto the irradiation regions that respectively correspond to the nuggets. The laser beam is projected onto each of the irradiation regions such that an amount of input heat from the laser beam that is projected onto each of the irradiation regions to the workpiece is reduced as the nuggets are sequentially formed.Type: ApplicationFiled: May 19, 2015Publication date: November 26, 2015Inventors: Kohei HISADA, Toru HIOKI, Junichiro MAKINO, Kazuyuki OGUSU, Masahiro NAKATA
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Publication number: 20150298255Abstract: A welding method for joining together a plurality of welding objects by overlapping the plurality of welding objects and performing laser welding includes forming a weld by forming a plurality of nuggets along a virtual closed curve on the welding objects, by laser welding. A ratio of a diameter of the nuggets to a pitch dimension between the nuggets that are adjacent to each other is larger than 1/2 and no more than 1.Type: ApplicationFiled: April 20, 2015Publication date: October 22, 2015Inventors: Kohei HISADA, Shuhei OGURA, Junichiro MAKINO, Kazuyuki OGUSU, Masahiro NAKATA