Cutting insert
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United States of America Patent
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-
Aug 30, 2005
Grant Date -
Jan 15, 2004
app pub date -
Jul 19, 2001
filing date -
Aug 18, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A cutting insert is formed with a central planar support face, at least three cutting edges spaced outwardly from and around the support face and forming corners, and a land extending along each cutting edge between the respective corners and projecting from the respective cutting edge inward toward the support face. The land has a central region of a relatively great width measured perpendicular to the respective cutting edge and a pair of side regions flanking the central region and each of a relatively narrow width. The great width is equal to between 1.5 and 4 times the narrow width, and the land forms with a plane of the support face an outwardly open negative land angle of at least 0°.
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