Cutters – for shaping – Rotary cutting tool – Face or end mill
Reexamination Certificate
2011-08-16
2011-08-16
Alie, Ghassem (Department: 3724)
Cutters, for shaping
Rotary cutting tool
Face or end mill
C407S119000, C407S063000
Reexamination Certificate
active
07997834
ABSTRACT:
A radius end mill includes an end mill body, peripheral cutting edges, bottom cutting edges and corner cutting edges. Each of the corner cutting edge is formed so as to curve toward the terminal end of the end mill body after the corner cutting edge has reached the distal end of the end mill body. A rake surface of the corner cutting edge is formed so as to be flush with the rake surface of the bottom cutting edge. When an external diameter of the end mill body is D, a value of a radius of curvature R of the corner cutting edge is greater than or equal to 0.1×D and is less than or equal to 0.3×D.
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Japanese Office Action mailed Feb. 22, 2011, for the corresponding Japanese Patent Application No. 2005-214210 (English translation provided).
Abe Kazumasa
Aoki Taiitsu
Alie Ghassem
Leason Ellis LLP.
Mitsubishi Materials Corporation
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