Patents by Inventor Yasuhiro Nakamichi
Yasuhiro Nakamichi 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: 10307843Abstract: Provided is an internal gear grinding method that makes it possible to grind an internal gear having arc-shaped teeth in a short amount of time. To this end, an internal gear having arc-shaped teeth and a threaded grindstone with a barrel shape having blades with a shape corresponding to the arc shape of the teeth are engaged at a predetermined axis intersection angle, and the internal gear and the threaded grindstone are made to rotate in synchronization with each other so that the tooth surface of the internal gear is ground by the blade surface of the threaded grindstone.Type: GrantFiled: May 26, 2014Date of Patent: June 4, 2019Assignee: MITSUBISHI HEAVY INDUSTRIES MACHINE TOOL CO., LTD.Inventors: Masashi Ochi, Yoshikoto Yanase, Yasuhiro Nakamichi
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Publication number: 20160121414Abstract: Provided is an internal gear grinding method that makes it possible to grind an internal gear having arc-shaped teeth in a short amount of time. To this end, an internal gear having arc-shaped teeth and a threaded grindstone with a barrel shape having blades with a shape corresponding to the arc shape of the teeth are engaged at a predetermined axis intersection angle, and the internal gear and the threaded grindstone are made to rotate in synchronization with each other so that the tooth surface of the internal gear is ground by the blade surface of the threaded grindstone.Type: ApplicationFiled: May 26, 2014Publication date: May 5, 2016Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Masashi OCHI, Yoshikoto YANASE, Yasuhiro NAKAMICHI
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Patent number: 8998681Abstract: Provided is a gear grinding method capable of improving processing accuracy and easily adjusting the crowning shape by simplifying a processing operation. To this end, a work piece (W) is ground by a gear-shaped grinding stone (11) having a drum shape such that crowning along a tooth trace direction is applied to the work piece (W) by applying a relative feed in a feed direction (D1) that intersects a work piece rotation axis (C1) at a predetermined first diagonal angle (?1) between the work piece (W) and the gear-shaped grinding stone (11) while the work piece (W) and the gear-shaped grinding stone (11) are synchronously rotated in the state of being engaged so as to have a predetermined crossed axes angle (?), and the curvature in a grinding stone width direction, which defines the drum shape of the gear-shaped grinding stone (11), and the first diagonal angle (?1) are set according to the crowning shape of the work piece (W).Type: GrantFiled: November 25, 2011Date of Patent: April 7, 2015Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Yoshikoto Yanase, Masashi Ochi, Yasuhiro Nakamichi
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Patent number: 8979610Abstract: Disclosed is a method for dressing a threaded grinding stone for internal gear grinding, by which a threaded grinding stone for grinding an internal gear can be dressed with a high degree of accuracy by using a dressing gear that has been produced with a high degree of accuracy.Type: GrantFiled: October 6, 2010Date of Patent: March 17, 2015Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Yoshikoto Yanase, Masashi Ochi, Yasuhiro Nakamichi
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Publication number: 20140357167Abstract: A disk dresser and a dressing method enable high-precision dressing of a drum-shaped gear-like grindstone and shaping of the cutting teeth of the grindstone without changing the shape of the cutting teeth of the disk dresser. A drum-shaped gear-like grindstone is brought into linear contact with a workpiece so as to link with the contours of the tooth right angle cross-section orthogonal to the twist direction of the workpiece teeth. The grindstone and a disk dresser, in an engaged state, are caused to rotate synchronously, thereby causing the drum-shaped grindstone to be dressed by the disk dresser. The disk dresser blade shape is made to match the tooth right angle cross-section shape of the teeth of the ground workpiece. The grindstone and the disk dresser are caused to move and revolve in accordance with the drum shape and the angle of twist of the grindstone.Type: ApplicationFiled: February 20, 2012Publication date: December 4, 2014Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshikoto Yanase, Masashi Ochi, Yasuhiro Nakamichi
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Publication number: 20130288576Abstract: Provided is a gear grinding method capable of improving processing accuracy and easily adjusting the crowning shape by simplifying a processing operation. To this end, a work piece (W) is ground by a gear-shaped grinding stone (11) having a drum shape such that crowning along a tooth trace direction is applied to the work piece (W) by applying a relative feed in a feed direction (D1) that intersects a work piece rotation axis (C1) at a predetermined first diagonal angle (?1) between the work piece (W) and the gear-shaped grinding stone (11) while the work piece (W) and the gear-shaped grinding stone (11) are synchronously rotated in the state of being engaged so as to have a predetermined crossed axes angle (?), and the curvature in a grinding stone width direction, which defines the drum shape of the gear-shaped grinding stone (11), and the first diagonal angle (?1) are set according to the crowning shape of the work piece (W).Type: ApplicationFiled: November 25, 2011Publication date: October 31, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshikoto Yanase, Masashi Ochi, Yasuhiro Nakamichi
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Publication number: 20130130598Abstract: Disclosed is a method for dressing a threaded grinding stone for internal gear grinding, by which a threaded grinding stone for grinding an internal gear can be dressed with a high degree of accuracy by using a dressing gear that has been produced with a high degree of accuracy.Type: ApplicationFiled: October 6, 2010Publication date: May 23, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshikoto Yanase, Masashi Ochi, Yasuhiro Nakamichi
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Patent number: 6788932Abstract: A data communication system utilizing a cellular phone is composed of a radio base station, a cellular phone having a function of connecting to a network through radio communications with the radio base station to make data communications accompanied by error control using a CRC code, and a terminal connecting to the network by using the data communication function of the cellular phone to make data communications, wherein, when a message frame which is an error frame having a different CRC code is received from the radio base station, the cellular phone takes out and stores the data contained in the message frame and reproduces the thus stored data to output the data.Type: GrantFiled: May 31, 2001Date of Patent: September 7, 2004Assignee: Sharp Kabushiki KaishaInventor: Yasuhiro Nakamichi
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Publication number: 20020004388Abstract: A data communication system utilizing a cellular phone is composed of a radio base station, a cellular phone having a function of connecting to a network through radio communications with the radio base station to make data communications accompanied by error control using a CRC code, and a terminal connecting to the network by using the data communication function of the cellular phone to make data communications, wherein, when a message frame which is an error frame having a different CRC code is received from the radio base station, the cellular phone takes out and stores the data contained in the message frame and reproduces the thus stored data to output the data.Type: ApplicationFiled: May 31, 2001Publication date: January 10, 2002Inventor: Yasuhiro Nakamichi