• Patent Title: END MILL AND METHOD FOR MANUFACTURING MACHINED PRODUCT
  • Application No.: US15529685
    Application Date: 2015-11-26
  • Publication No.: US20170326655A1
    Publication Date: 2017-11-16
  • Inventor: Masahiko KURODA
  • Applicant: Kyocera Corporation
  • Priority: JP2014-239991 20141127
  • International Application: PCT/JP2015/083172 WO 20151126
  • Main IPC: B23C5/10
  • IPC: B23C5/10
END MILL AND METHOD FOR MANUFACTURING MACHINED PRODUCT
Abstract:
A end mill includes: an end mill body having a rotation axis, the end mill body including a shank portion and a cutting portion with an outer peripheral cutting edge; an end cutting edge including a first cutting edge and a second cutting edge; a first gash opening between the first cutting edge and the second cutting edge; and a second gash located adjacently to the first gash in the rotational direction, and opening to a side closer to the outside peripheral from the chisel portion. A ratio (L1/L2) of a length (L1) from a distal end of the end mill body to a terminal end of the first gash to a length (L2) from the distal end of the end mill body to a terminal end of the second gash, when viewed from a side, is from 0.8 to 1.1.
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