Negative cutting insert, and indexable rotary cutting tool, indexable rotary cutting tool system and cutting method using such cutting insert
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United States of America Patent
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Dec 27, 2016
Grant Date -
Jun 12, 2014
app pub date -
Jun 8, 2012
filing date -
Jul 12, 2011
priority date (Note) -
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Abstract
A negative cutting insert having a cutting edge comprising four long-side cutting edge portions for rough cutting and four short-side cutting edge portions for finish cutting, which are connected alternately, thereby being able to conduct rough cutting when attached to a rough-cutting tool body, and finish cutting when attached to a finish-cutting tool body. When such cutting inserts are used for rough or finish cutting and then reattached to a finish-cutting tool body or a rough-cutting tool body, finish or rough cutting can be conducted, thereby using all cutting edges thoroughly.
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