Patent ID: 6068430
Filing Date: 2000-05-30
Classification: B23C,Y10T

Abstract:
A mounting mechanism for a rotating tool, comprising:an outer peripheral surface of a cutter body which is annular in shape and includes cutting edges on an inner periphery, said outer peripheral surface being tapered with an angle of inclination with respect to a rotational axis of the cutter body, said outer peripheral surface including at least one flat portion arranged tangentially to a circle centered on said rotational axis;an inner peripheral surface of a cutter mounting portion, said inner peripheral surface being tapered to detachably receive said outer peripheral surface, said inner peripheral surface including at least one substantially flat portion arranged tangentially to a circle entered on said rotational axis so as to contact said at least one substantially flat portion included on said outer peripheral surface when said outer peripheral surface is received by said inner peripheral surface, wherein said outer and inner peripheral surfaces are configured to be in surface-to-surface contact with each other, each of said inner and outer peripheral surfaces are formed by a plurality of substantially flat surfaces so as to form a substantially pyramidal surface on each of said inner and outer peripheral surfaces, comers of the pyramidal surfaces are cut to form stealing holes, and wherein said corners of said outer peripheral surface are chamfered.