Patent ID: 7478983

Claim:
A tool assembly comprising: a tool holder comprising a sleeve, a collet and a pusher; the sleeve having a longitudinal sleeve axis and comprising: a cavity having a cavity wall which opens out to a forward end thereof, the cavity wall comprising a forward tapering portion and a cylindrical portion, the forward tapering portion tapering axially rearwardly from the forward end of the sleeve towards the cylindrical portion; the collet comprising: a collet head comprising a base at a rear end, the base having an axially extending cylindrical peripheral surface; and a finger portion comprising at least two bulge portions at a forward end of the collet, each bulge portion comprising an outer bulge surface and an inner bulge surface, the outer bulge surface having an axially extending cylindrical shape and the inner bulge surface laying on a forwardly tapering conical surface; and the pusher comprising: a pusher body having a longitudinal pusher axis and a rear end, the pusher being configured and dimensioned to be inserted, with the pusher body's rear end leading, into the forward end of the collet until a portion of the pusher abuts a forwardly facing surface of the collet; and a tool having a longitudinal tool axis and comprising a tool head, a coupling member and a shank therebetween; the shank tapering axially rearwardly from the tool head to the coupling member, the coupling member extending axially rearwardly from the shank and comprising a forwardly tapering frustoconical head.