Patent ID: 6065907
Filing Date: 2000-05-23
Classification: B23B,Y10T

Abstract:
An indexable cutting insert comprising a polygonal body of wear resistant material wherein the body includes a top surface, a bottom surface and a peripheral wall therebetween having sides and corners and wherein the intersection of the peripheral wall and the top surface forms a cutting edge with a land extending therein from the cutting edge, the top surface comprising:a) a floor;b) a sloping wall inclined downwardly and inwardly from the land to the floor;c) a plateau disposed upon the floor and spaced inwardly from the sloping wall, wherein the plateau has sloped sides ascending from the floor; andd) a raili) beginning at a corner;ii) protruding from the floor;iii) positioned between the cutting edge and the plateau;iv) extending away from the corner generally along a rail axis;v) wherein the rail axis diverges from a line parallel to the cutting edge as it extends from the corner; ande) wherein the cutting edge along a side of the insert defines a length and the rail extends continuously along the rail axis a distance of at least one-fourth the length of the side.