Coupler for a quick change insert rotary cutting tool
AssigneeKennametal Inc.
InventorVladimir David Volokh
Life of this patent
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Abstract
A coupler for a quick change rotary cutting tool assembly allowing a cutter to be quickly and releasably coupled to a shank wherein the coupler has a cylindrical portion with a threaded portion to engage the shank and a portion with a transverse groove with undercut walls to form recesses. The cutter has an anchor made as a disk with parallel flats which engage the recesses of the cylindrical portion to releasably secure the cutter to the shank.
Claims26
A coupler for a quick change rotary cutting tool assembly allowing a cutter having an anchor projecting from a rear stop face of the cutter abutting a centering portion to be quickly and releasably coupled to a shank having a centering portion within an internal mounting bore, the coupler comprising:
- a cylindrical portion supporting at a rear end a coaxial male threaded portion for engaging an internal threaded bore of the shank, and
- a transversal groove diametrically formed through the cylindrical portion and being open toward a front end surface of the cylindrical portion so as to form an open channel having opposing parallel walls dimensioned to accommodate opposing parallel flat surfaces of an anchor mounted on a rear end of the cutter;
- a partial inside surface of a first one of the walls and an angularly opposing partial inside surface of a second one of the walls being undercut toward a lower surface of the groove so as to form a pair of angularly offset recesses at respective opposite ends of the groove that engage a retaining surface of the anchor when the anchor is inserted into the groove and rotated in a locking direction.
Dependencies are inferred from the claim text.