Cutting insert and cutting edge replaceable rotary cutting tool
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United States of America Patent
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app pub date -
Sep 20, 2013
filing date -
Sep 20, 2012
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Abstract
A cutting insert is used in a cutting edge replaceable rotary cutting tool. The cutting insert includes a first cutting edge formed on an intersecting ridge portion between a first end surface of two opposite end surfaces and a circumferential side surface, and a first depressed portion formed along a part of the first cutting edge. The first depressed portion is provided to form a larger rake angle at the first cutting edge than that at a part not having the first depressed portion of the first cutting edge.
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