Patent ID: 6220794
Filing Date: 2001-04-24
Classification: B23C,Y10T

Abstract:
A rotary cutting tool for cutting a spherical seat on a surface of a workpiece, the cutting tool comprising a body having insert seats adapted to carry cutting inserts, a through-bore extending through the body along a longitudinal center axis of the body, the body including a forwardly facing front surface of generally convex shape, all of the insert seats formed in the front surface and arranged in circumferentially spaced relationship around the axis, each of the insert seats facing generally forwardly and comprising recesses of generally pyramidal shape, a screw-threaded hole extending through each of the seats in a rearward direction and adapted to receive an insert-fastening screw, the forwardly facing surface being inclined forwardly toward the center axis, every insert seat on the body being disposed in the inclined forwardly facing surface, wherein the body contains no insert seat other than those disposed in the inclined forwardly facing surface.