Patent ID: 7309193

Claim:
An indexable cutting insert for a milling tool, the cutting insert being asymmetrical in respect of a line through a hole in the cutting insert, the cutting insert comprising first and second cutting edge portions, each cutting edge portion comprising a substantially straight cutting edge and a curved cutting edge along respective intersecting lines between a clearance surface and a rake face and, for each cutting edge portion, lines extending substantially perpendicularly to an axis of the hole and drawn through endpoints of the straight cutting edge and the curved cutting edge of the cutting edge portion intersect to define an obtuse angle when viewed along the axis of the hole, the curved cutting edges having different lengths, the cutting insert having a bottom side and a first and a second opposite corner, the first and second opposite corners being defined by intersections between curved cutting edges of the first and second cutting edge portions and straight cutting edges of the second and first cutting edge portions, respectively, the first and second opposite corners defining parts of the two cutting edge portions, wherein the second corner is defined in plan view by a radius that is greater than a radius of the first corner.