Patents by Inventor Jyunichiro Shibuya

Jyunichiro Shibuya 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).

  • Milling cutter, cutting insert, and milling method
    Patent number: 10744574
    Abstract: Provided is a milling cutter including: a tool body to rotate about an axis; and cutting edges at an outer peripheral part of a front end of the tool body, wherein the cutting edges include a flat face machining cutting edge extending along a virtual plane perpendicular to the axis, and a recessed groove machining cutting edge projecting further toward a front end side in the axial direction than the flat face machining cutting edge, and the recessed groove machining cutting edge has a first inclined portion extending toward the front end side in the axial direction toward an outside in a radial direction, a second inclined portion arranged outside the first inclined portion in the radial direction and extending toward a base end side in the axial direction toward the outside in the radial direction, and a tip portion connecting the first and second inclined portions.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: August 18, 2020
    Assignee: Ahresty Corporation
    Inventors: Jyunichiro Shibuya, Masaaki Hasegawa, Koji Tatsuta
  • MILLING CUTTER, CUTTING INSERT, AND MILLING METHOD
    Publication number: 20190118272
    Abstract: Provided is a milling cutter including: a tool body to rotate about an axis; and cutting edges at an outer peripheral part of a front end of the tool body, wherein the cutting edges include a flat face machining cutting edge extending along a virtual plane perpendicular to the axis, and a recessed groove machining cutting edge projecting further toward a front end side in the axial direction than the flat face machining cutting edge, and the recessed groove machining cutting edge has a first inclined portion extending toward the front end side in the axial direction toward an outside in a radial direction, a second inclined portion arranged outside the first inclined portion in the radial direction and extending toward a base end side in the axial direction toward the outside in the radial direction, and a tip portion connecting the first and second inclined portions.
    Type: Application
    Filed: January 16, 2017
    Publication date: April 25, 2019
    Applicant: Ahresty Corporation
    Inventors: Jyunichiro Shibuya, Masaaki Hasegawa, Koji Tatsuta