Patent ID: 6077003
Filing Date: 2000-06-20
Classification: B23B,Y10T

Abstract:
A tool holder mountable in a rotating machine spindle having an end face and a tapered cavity wall, the tool holder comprising:a body having a generally tapered sidewall and constructed to engage and retain a cutting tool holder coaxial with the tapered wall;a central bore in the body;an adjustment rod disposed interiorly of the central bore and axially moveable relative to the body;a collar attached adjacent one end of the rod;a radially extending flange adjacent an end of the body constructed to engage the end face of the machine spindle;an annular expansion sleeve carried by the body and in communication with the rod so that force applied to the collar first pulls the tool holder into the machine spindle until the flange firmly engages the end face of the spindle and further movement of the rod applies a force to generally radially expand the expansion sleeve to urge one of the body and sleeve of the tool holder into contact and firm engagement with the tapered cavity wall of the machine spindle, and in its unflexed state the one of the sleeve and body engageable with the tapered cavity wall has a slight clearance between them when the flange engages the end face of the spindle and before the sleeve is radially expanded.