Patent ID: 6716388
Filing Date: 2004-04-06
Classification: B23B,Y10S,Y10T

Abstract:
A method of manufacturing a tool tip comprised of a body defining a longitudinal axis of rotation and having front and rear ends, the front end forming an integral cutting edge, the rear end including a coupling structure adapted to couple the tool tip to a tool body, the method comprising the steps of:A) providing a first heated mixture of a hard metal powder, a plastic binder, and a first amount of metallic binder; B) injecting the first heated mixture into a first mold cavity; C) allowing the first heated mixture to cool in the first mold cavity to form a core; D) providing a second heated mixture of a hard metal powder, a plastic binder, and a second amount of metallic binder less than the first amount of metallic binder; E) injecting the second heated mixture into a second mold cavity extending around the core; F) allowing the second heated material to cool in the second mold cavity and adhere to the core; and G) sintering the core and the second material, wherein the core forms the coupling structure, and the second material forms at least part of the cutting edge.