Title:
ENDMILL
Document Type and Number:
WIPO Patent Application WO/2017/188379
Kind Code:
A1
Abstract:
In the present end mill: four peripheral cutting edges (1) and (2) that are side by side at distances from each other in the circumferential direction of the end mill body comprise two each of first peripheral cutting edges (1) and second peripheral cutting edges (2) that have a different helix angle from the first peripheral cutting edges 1; the first peripheral cutting edges (1) and the second peripheral cutting edges (2) are alternately disposed in the circumferential direction; and in a transverse sectional view of the end mill at a specified location in the cutting edge length ap region of the peripheral cutting edges (1) and (2), four pitch angles A and B that are side by side in the circumferential direction comprise two each of first pitch angles A and second pitch angles B with a different angle from the first pitch angles A, and the two first pitch angles A, A are disposed adjacent to each other in the circumferential direction and the two second pitch angles B, B are disposed adjacent to each other in the circumferential direction.
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Inventors:
SUZUKI NORIKAZU (JP)
ISHIGURO RIKIYA (JP)
HOSOKAWA MASAYASU (JP)
SAKAGUCHI KOUTAROU (JP)
ISHIGURO RIKIYA (JP)
HOSOKAWA MASAYASU (JP)
SAKAGUCHI KOUTAROU (JP)
Application Number:
PCT/JP2017/016732
Publication Date:
November 02, 2017
Filing Date:
April 27, 2017
Export Citation:
Assignee:
NAT UNIV CORP NAGOYA UNIV (JP)
MITSUBISHI MATERIALS CORP (JP)
MITSUBISHI MATERIALS CORP (JP)
International Classes:
B23C5/10
Foreign References:
| US20110013998A1 | 2011-01-20 | |||
| JP2011206863A | 2011-10-20 | |||
| JP2014058041A | 2014-04-03 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
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