CUTTING INSERT WITH A LINEAR AND A CONCAVE CUTTING EDGE PORTION

摘要

A cutting insert includes a top face, a bottom face and a plurality of side walls extending between the top face and the bottom face. A peripheral cutting edge is defined at the juncture of each side wall and the top face. Each cutting edge includes a linear cutting edge portion and a concave cutting edge portion that curves inwardly in a plane that is perpendicular to a plane containing a central axis of the cutting insert. A radiused corner portion connects two adjacent cutting edges. Each linear cutting edge portion extends from one radiused corner portion to the concave cutting edge portion and the concave cutting edge portion extends from the linear cutting edge portion to another radiused corner portion.

主权项

1. A cutting insert, comprising:
a top face; a bottom face, wherein a central axis of the cutting insert extends through the top face and the bottom face; a plurality of side walls extending between the top face and the bottom face; a peripheral cutting edge defined at the juncture of each side wall and the top face, each cutting edge including a linear cutting edge portion and a concave cutting edge portion that curves inwardly in a plane that is perpendicular to a plane containing the central axis; and a radiused corner portion connecting two adjacent cutting edges, wherein each linear cutting edge portion extends from one radiused corner portion to the concave cutting edge portion and each concave cutting edge portion extends from the linear cutting edge portion to another radiused corner portion.