Patent ID: 7320566
Filing Date: 2008-01-22
Classification: B23B,B23C,B23D,B23G,Y10S,Y10T

Abstract:
1. A cutting tool that is to be rotated relative to a workpiece, for performing a cutting operation, said cutting tool comprising: a cutter head; and a holder holding said cutter head, wherein one of said cutter head and said holder has a recess formed in an axial end portion thereof and defined by a circumferential wall thereof, wherein the other of said cutter head and said holder has a protrusion formed in an axial end portion thereof, such that said cutter head and said holder are detachably attached to each other, with said protrusion being introduced in said recess by an axial distance, wherein said one of said cutter head and said holder has a pair of coaxial holes in the form of first and second pin receiver holes which are formed in said circumferential wall and which are coaxial with each other, wherein said other of said cutter head and said holder has an engaging surface which is recessed from an outer circumferential surface of said protrusion and which is held in engagement with a pin that is received in said first and second pin receiver holes, and wherein each of said first and second pin receiver holes has an axis which is inclined, with respect to a plane that is perpendicular to an axis of said one of said cutter head and said holder, in a direction causing said axial distance to be increased by a cutting resistance generated in the cutting operation.