Patents by Inventor Yoshihiro Sei

Yoshihiro Sei 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).

  • Method for setting a moving position in a machine tool
    Patent number: 6658317
    Abstract: A contour shape of a desired shape of a workpiece at section along a predetermined axis is divided into machining units. Each of the machining units includes a plurality of inflection points including a machining start point and a machining end point. Machining data at least necessary for performing machining is set for each of the machining units. Arrival times at the inflection points are calculated based on the machining data, and a position of at least one of the workpiece and the tool is calculated for each of the inflection points. For each of the machining units, a rotation angle position of the workpiece corresponding to the arrival time is set as an accumulated count value.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: December 2, 2003
    Assignee: Star Micronics Co., Ltd.
    Inventors: Tetsuya Sugiyama, Takehisa Kajiyama, Yoshihiro Sei, Masanori Hasegawa
  • Method for setting a moving position in a machine tool
    Publication number: 20020193906
    Abstract: A contour shape of a desired shape of a workpiece at section along a predetermined axis is divided into machining units. Each of the machining units includes a plurality of inflection points including a machining start point and a machining end point. Machining data at least necessary for performing machining is set for each of the machining units. Arrival times at the inflection points are calculated based on the machining data, and a position of at least one of the workpiece and the tool is calculated for each of the inflection points. For each of the machining units, a rotation angle position of the workpiece corresponding to the arrival time is set as an accumulated count value.
    Type: Application
    Filed: June 13, 2002
    Publication date: December 19, 2002
    Applicant: STAR MICRONICS CO., LTD.
    Inventors: Tetsuya Sugiyama, Takehisa Kajiyama, Yoshihiro Sei, Masanori Hasegawa
  • Tool path preparing method and machining method
    Publication number: 20020025758
    Abstract: The movement position of the roughing tool is calculated, in S109, by adding the finishing allowance to the movement position of the finishing tool so that the path of the roughing tool is shifted in the direction perpendicular to the rotation center axis of the main spindle rotation motor from the path of the finishing tool by the finishing allowance. Then, a gap between the movement position of the roughing tool in the direction of the rotation center axis of the main spindle rotation motor and the workpiece W is calculated, and when the gap is not larger than a predetermined value G, in S113, the movement position of the roughing tool is corrected in the direction perpendicular to the rotation center axis of the main spindle rotation motor so that the roughing tool does not cut in the inside of the finishing portion of the workpiece.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 28, 2002
    Applicant: STAR MICRONICS CO., LTD.
    Inventors: Yoshihiro Sei, Takehisa Kajiyama, Nobuyuki Endo, Kunihisa Shibazaki