Patents by Inventor Takahide Hirayama
Takahide Hirayama 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: 9233431Abstract: An arc welding device according to an embodiment carries out welding while repeatedly generating a short circuit state and an arc state between a consumable electrode and a welding member. The arc welding device includes a detection unit and an adjustment unit. The detection unit detects at least one of a length of a short circuit generation period of this time and a length of an arc generation period of this time. The adjustment unit adjusts an increase rate of a short circuit current in a short circuit generation period of next time according to at least one of the length of the short circuit generation period and the length of the arc generation period detected by the detection unit.Type: GrantFiled: August 30, 2011Date of Patent: January 12, 2016Assignee: KABUSHIKI KAISHA YASKAWA DENKIInventors: Masafumi Murakami, Takahide Hirayama
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Publication number: 20140175073Abstract: A power supply device for arc welding according to an embodiment includes a constrained short-circuit opening unit and a reexecuting unit. The constrained short-circuit opening unit reduces, when a change amount of a welding voltage becomes not less than a predetermined threshold while raising a welding current between a consumable electrode and a workpiece, the welding current for a predetermined time interval to execute a constrained short-circuit opening process for opening the short-circuit state. The reexecuting unit makes the constrained short-circuit opening unit reexecute the constrained short-circuit opening process after the constrained short-circuit opening process is executed.Type: ApplicationFiled: March 15, 2013Publication date: June 26, 2014Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Masafumi MURAKAMI, Takahide HIRAYAMA
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Publication number: 20120080416Abstract: An arc welding device according to an embodiment carries out welding while repeatedly generating a short circuit state and an arc state between a consumable electrode and a welding member. The arc welding device includes a detection unit and an adjustment unit. The detection unit detects at least one of a length of a short circuit generation period of this time and a length of an arc generation period of this time. The adjustment unit adjusts an increase rate of a short circuit current in a short circuit generation period of next time according to at least one of the length of the short circuit generation period and the length of the arc generation period detected by the detection unit.Type: ApplicationFiled: August 30, 2011Publication date: April 5, 2012Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Masafumi MURAKAMI, Takahide Hirayama
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Patent number: 7136723Abstract: A robot controller for teaching a robot with high efficiency. The robot controller including command storage unit (21) where a movement command and a work command are stored, command identifying unit (24) for discriminating between the movement and work commands, unit (22) for making/editing a series of work programs or discrete work programs by a combination of the commands, work program storage units (23) where the work programs are stored so as to control the robot according to the stored program, further including a work section identifying unit (25) for identifying a work section of the work program by way of the command identification unit (24) and work section automatic stopping unit (27) for automatically stopping or suspending the execution of the work program at the work section in a standby state when the work section identifying unit (25) identifies the work section during the execution of the work program.Type: GrantFiled: November 16, 2004Date of Patent: November 14, 2006Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Takahide Hirayama, Shinji Okumura, Hiyoyuki Handa, Takeshi Okamoto
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Publication number: 20050090934Abstract: A robot controller for teaching a robot with high efficiency. The robot controller including command storage unit (21) where a movement command and a work command are stored, command identifying unit (24) for discriminating between the movement and work commands, unit (22) for making/editing a series of work programs or discrete work programs by a combination of the commands, work program storage units (23) where the work programs are stored so as to control the robot according to the stored program, further including a work section identifying unit (25) for identifying a work section of the work program by way of the command identification unit (24) and work section automatic stopping unit (27) for automatically stopping or suspending the execution of the work program at the work section in a standby state when the work section identifying unit (25) identifies the work section during the execution of the work program.Type: ApplicationFiled: November 16, 2004Publication date: April 28, 2005Applicant: Kabushiki Kaisha Yaskawa DenkiInventors: Takahide Hirayama, Shinji Okumura, Hiyoyuki Handa, Takeshi Okamoto
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Patent number: 6872915Abstract: An arc welding method which suppresses sputtering and which makes it possible to obtain a smooth bead penetration surface shape as in MIG or MAG welding, without producing undercuts or bumping beads. A carbon dioxide gas welding method effecting welding at welding rates of about not less than 1.Type: GrantFiled: March 1, 2001Date of Patent: March 29, 2005Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Yasuhiro Koga, Shinji Okumura, Haruki Nakashima, Hiroyuki Handa, Takahide Hirayama
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Patent number: 6853878Abstract: A robot controller for teaching a robot with high efficiency. The robot controller including command storage unit (21) where a movement command and a work command are stored, command identifying unit (24) for discriminating between the movement and work commands, unit (22) for making/editing a series of work programs or discrete work programs by a combination of the commands, work program storage units (23) where the work programs are stored so as to control the robot according to the stored program, further including a work section identifying unit (25) for identifying a work section of the work program by way of the command identification unit (24) and work section automatic stopping unit (27) for automatically stopping or suspending the execution of the work program at the work section in a standby state when the work section identifying unit (25) identifies the work section during the execution of the work program.Type: GrantFiled: February 8, 2001Date of Patent: February 8, 2005Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Takahide Hirayama, Shinji Okumura, Hiyoyuki Handa, Takeshi Okamoto
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Patent number: 6627850Abstract: The welding method according to the present invention is adapted to carry out a welding operation by feeding a welding wire to a material to be welded, and generating an arc between the material to be welded and welding wire, in which the welding is done with the welding wire feeding speed increased and reduced during the welding operation, the welding wire feeding speed being reduced after the occurrence of short-circuiting is detected, the welding wire feeding speed being increased after the cancellation of the short-circuiting and the transfer of the welding operation to the formation of the arc are detected.Type: GrantFiled: October 10, 2001Date of Patent: September 30, 2003Assignees: Kabushiki Kaisha Yaskawa Denki, Hitachi Via Mechanics, Ltd.Inventors: Yasuhiro Koga, Shinji Okumura, Takahide Hirayama, Satoru Nio, Haruki Nakashima, Tsuneo Mita
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Publication number: 20030042238Abstract: An arc welding method which suppresses sputtering and which makes it possible to obtain a smooth bead penetration surface shape as in MIG or MAG welding, without producing undercuts or bumping beads. A carbon dioxide gas welding method effecting welding at welding rates of about not less than 1.Type: ApplicationFiled: August 30, 2002Publication date: March 6, 2003Inventors: Yasuhiro Koga, Shinji Okumura, Haruki Nakashima, Hiroyuki Kanda, Takahide Hirayama
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Publication number: 20030040840Abstract: A robot controller for teaching a robot with high efficiency, correcting a work program in a short time, and operating the robot under light load with improved safety.Type: ApplicationFiled: August 8, 2002Publication date: February 27, 2003Inventors: Takahide Hirayama, Shinji Okumura, Hiyoyuki Handa, Takeshi Okamoto
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Patent number: 6271500Abstract: The invention provides an arc welding monitoring device by which it is possible to easily find how detected data such as a welding current and welding voltage correspond to trajectories of a robot, in other words, welding line information of a welding work. The arc welding monitoring device comprises means 4 and 5 for detecting at least either the welding current or welding voltage, a means 14 for storing the detected data, a means 14 for storing trajectories of a robot, and a means for displaying, on a screen display, at least either the welding current or welding voltage detected by said detecting means, and the trajectories of the robot stored by the storing means, wherein a range is determined on the trajectories displayed on the screen display, and arc welding monitoring display is enabled in compliance with the range.Type: GrantFiled: February 7, 2000Date of Patent: August 7, 2001Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Takahide Hirayama, Shinji Okumura, Keiichi Takaoka, Noriyuki Ohsawa
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Patent number: 5601739Abstract: Arc generation time is obtained for each region to be welded by measuring the time during which the arc current (or voltage) exceeds a reference current (or voltage) and is compared with predetermined time which is set depending on the welding operation. An abnormality is detected in welding if the arc generation time is shorter.Type: GrantFiled: September 7, 1995Date of Patent: February 11, 1997Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Shinji Okumura, Takahide Hirayama, Ryuichi Morita