Abstract: A floating reamer holder includes a tool holder coupled to a mounting shank which is receivable in the chuck of the turret of a machine tool. The coupling between the tool holder and shank includes both a fine adjustment which adjusts the float in order to prevent enlargement of the hole being reamed as well, as to reduce chatter and a coarse adjustment, which compensates for misalignment between the turret and axis of the reamer. The coarse adjustment is accomplished by attaching the mounting shank to an adaptor with a pair of threaded bolts, each of which pass through oversized holes through the base of the mounting shank and are threaded into threaded bores in the adaptor. Since the holes are oversized, the mounting shank is radially shiftable with respect to the adaptor to compensate for machine misalignment. Lubricating bores extend completely through the mounting shank and completely through the adaptor so that the float assembly can be lubricated without disassembling the floating reamer holder.

Abstract: A collet assembly includes a self-retraction system for convenience of use and quick adjustment. In a preferred form, the collet assembly is releasably retained against a top pressure ring normally biased apart from a base ring. The pressure ring includes a plurality of elongated detents which extend axially from the pressure ring, each adapted for insertion into a detent-receiving socket of one die segment contained in an elastomeric cage. Each detent is radially moveable with respect to the pressure ring, such that as the die segments are contracted radially inwardly, the detents hold the segments to the pressure ring but permit movement of the segments radially with respect to the ring. After each crimping operation, the detents, which are normally spring biased to their radially outermost position, will return the die segments to a fully opened position.