Patent ID: 6517299
Filing Date: 2003-02-11
Classification: B23B,Y10T

Abstract:
A cutter holder comprising:a coupling shaft fastened to the cutter holder rack of a cutting metal-working machine, said coupling shaft comprising an axially extended center through hole, a neck, and a plurality of slots radially extended through said neck; a driving shaft inserted into the axially extended center through hole of said coupling shaft, said driving shaft comprising a plurality of toothed rails equiangularly spaced around the periphery thereof and respectively engaged into the slots of said coupling shaft; a driving nut formed of two symmetrical halves abutted against each other around said neck of said coupling shaft and meshed with the toothed rails of said driving shaft for enabling said driving shaft to be moved axially in said coupling shaft upon rotary motion of said driving nut; a retainer ring mounted on said neck of said coupling shaft and disposed in contact with said driving nut at one side, said retainer ring comprising a plurality of spring leaves radially arranged around the periphery thereof; a driving ring mounted around said coupling shaft and press-fitted onto the periphery of said driving nut; and a chuck fastened to one end of said coupling shaft and adapted to hold down a cutter.