| 摘要 |
PROBLEM TO BE SOLVED: To provide a tip with excellent economic efficiency allowing effective uses of all corners by enabling roughing and finishing by a single tip. SOLUTION: This tip has a plurality of cutting edges. At least two cutting edges of the cutting edges have the same cutting edge angle of≤90°. At least one cutting edge of the cutting edges having the same cutting edge angle has a breaker shape different from those of the other cutting edges. COPYRIGHT: (C)2010,JPO&INPIT
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