Patent ID: 7563059

Claim:
An end mill, comprising: a cylindrical tool body having a longitudinal central axis, the cylindrical tool body rotatable about the longitudinal central axis; a fluted cutting end and a shank end integrally formed in the cylindrical tool body in opposition, the shank end having a shank extending along the longitudinal central axis, the fluted cutting end defining a circumferential cutting surface extending along the longitudinal central axis of rotation adjacent to the shank; wherein the circumferential cutting surface further comprises a plurality of circumferentially spaced cutting edges, each cutting edge extending generally along a datum line, the datum line oriented at a first cutting angle on the circumferential cutting surface, wherein the first cutting angle is defined on the cutting surface between the projection of the longitudinal central axis and the datum line, and wherein each cutting edge is located on a contour centered about the datum line in the shape of a single pitch of a single sinusoidal wave.