Title:
END MILL
Document Type and Number:
Japanese Patent JP2005118960
Kind Code:
A
Abstract:
To improve the tool service life by reducing a cutting load in an end mill such as a ball end mill and a radius end mill.
A cutting edge 2 is formed into an axially symmetrical twist blade in a bottom surface view. A first cutting edge 2A and a second cutting edge 2B are formed by making chamfers 4A and 4B adjacent to the cutting directional side. A cutting edge angle formed of the chamfers 4A and 4B and flanks 3A and 3B, is regularly or continuously changed along the cutting edge 2.
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Inventors:
WATANABE KENJI
Application Number:
JP2003358213A
Publication Date:
May 12, 2005
Filing Date:
October 17, 2003
Export Citation:
Assignee:
NISSHIN KOGU KK
International Classes:
B23C5/10; (IPC1-7): B23C5/10
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
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