Patents by Inventor Yoshitaro OHSAKI

Yoshitaro OHSAKI 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).

  • GEAR MACHINING APPARATUS
    Publication number: 20210331261
    Abstract: To provide a gear machining apparatus capable of correcting a tooth trace error without using a special tool when a hob cutter is cantilever-supported. A gear machining apparatus includes a hob cutter machining a tooth profile on a workpiece, a tool spindle device rotatably cantilever-supporting the hob cutter, a workpiece spindle device rotatably supporting the workpiece, a driving device moving the tool spindle device and the workpiece spindle device relatively to each other, a measuring device measuring the value corresponding to a bending amount of the hob cutter or a rotation synchronization shift of the workpiece spindle device with respect to the tool spindle device and a correction processing unit correcting a cutting amount of the hob cutter T or the rotation synchronization shift of the workpiece spindle device with respect to the tool spindle device based on the value measured by the measuring device.
    Type: Application
    Filed: April 2, 2021
    Publication date: October 28, 2021
    Applicant: JTEKT CORPORATION
    Inventors: Kento TAKEUCHI, Hisashi OTANI, Hiroyuki NAKANO, Shuntaro TAKASU, Yoshitaro OHSAKI, Tetsuro FURUHATA, Kazunari OGURA
  • Gear machining apparatus and gear machining method
    Patent number: 11059115
    Abstract: A gear machining apparatus creates a gear on a workpiece W by moving a gear cutting tool relatively with respect to the workpiece along the direction of the rotation axis of the workpiece W while synchronously rotating the gear cutting tool and the workpiece. One of a workpiece rotation speed controlling portion and a tool rotation speed controlling portion varies the rotation speed of one of the workpiece and the gear cutting tool and the other one of the workpiece rotation speed controlling portion and the tool rotation speed controlling portion synchronizes the rotation speed of the other one of the workpiece and the gear cutting tool with one of the rotation speed of the workpiece and the gear cutting tool.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: July 13, 2021
    Assignee: JTEKT CORPORATION
    Inventors: Daichi Kanda, Takaaki Hashimoto, Yuji Sasaki, Yoshihiko Yamada, Hisashi Otani, Yoshitaro Ohsaki
  • GEAR MACHINING APPARATUS AND GEAR MACHINING METHOD
    Publication number: 20200047268
    Abstract: A gear machining apparatus creates a gear on a workpiece W by moving a gear cutting tool relatively with respect to the workpiece along the direction of the rotation axis of the workpiece W while synchronously rotating the gear cutting tool and the workpiece. One of a workpiece rotation speed controlling portion and a tool rotation speed controlling portion varies the rotation speed of one of the workpiece and the gear cutting tool and the other one of the workpiece rotation speed controlling portion and the tool rotation speed controlling portion synchronizes the rotation speed of the other one of the workpiece and the gear cutting tool with one of the rotation speed of the workpiece and the gear cutting tool.
    Type: Application
    Filed: October 11, 2017
    Publication date: February 13, 2020
    Applicant: JTEKT CORPORATION
    Inventors: Daichi KANDA, Takaaki HASHIMOTO, Yuji SASAKI, Yoshihiko YAMADA, Hisashi OTANI, Yoshitaro OHSAKI