Patent ID: 6099214
Filing Date: 2000-08-08
Classification: B23B,Y10T

Abstract:
A cutter for forming a cylindrically-shaped member from a workpiece, comprising:a shank; anda body portion attached to one end of the shank and having a central bore for receiving the cylindrically-shaped member, the body portion including:a spur formed of carbide for forming a depression in the workpiece as the body portion rotates, the spur being positioned at a first radial distance from a center of the cutter and the depression defining a diameter of the cylindrically-shaped member;a cutting tooth formed of carbide for traveling within the depression and having a leading arris for cutting a trough into the workpiece as the body portion rotates, the cutting tooth being positioned at the first radial distance from the center of the cutter and having a thickness greater than that of the spur; anda first interior surface positioned at a bottom of the body portion for traveling within the trough cut by the cutting tooth, the first interior surface being spaced at the first radial distance from the center of the cutter;wherein the spur is lower on the body portion than the first interior surface so that a ridge formed at a lower most surface of the first interior surface is not in contact with the workpiece as the body portion rotates.