Patent ID: 6758530
Filing Date: 2004-07-06
Classification: B28D,E21C

Abstract:
A cutting tool comprisinga tool body having a longitudinal axis, a tapered cutting portion symmetrical about said axis and a cylindrical shank axially behind said tapered cutting portion, said tool body having a seat at a forward end of said cutting portion, said seat having a given outer diameter, an insert bonded into said seat, said insert comprising a central portion made of a hardened material and having a tapered forward cutting end and an elongate mid-section positioned axially behind said tapered cutting end, a tubular metal sleeve fitted around at least a portion of said elongate mid-section of said central portion, and an annular collar made of said hardened material, said annular collar having an aperture into which at least a portion of said metal sleeve is fitted, and an outer diameter sized to fit within said given outer diameter of said seat.