Patent ID: 6695549
Filing Date: 2004-02-24
Classification: B23B,Y10T

Abstract:
A cutting tool assembly (10) comprising a cutting insert holder (12) and a cutting insert (14), the cutting insert holder comprising a body portion (16) and an insert retaining portion (18) the insert retaining portion having a generally cylindrical inner surface (32) of first diameter (D1) and a longitudinal axis A;the insert retaining portion (18) comprising a fixed portion (22) connected to the body portion (16) and an axially extending clamping jaw (24) having a radially facing clamping surface (42), the axially extending clamping jaw (24) being connected to the fixed portion (22) on one side along an axially extending juncture (25) and separated from the fixed portion (22) on an other side along an axially extending free end (30) by an axially extending aperture (27), the axially extending aperture (27) being bound by the free end (30) of the clamping jaw (24) on one side and by an axially extending first locating surface (36) of the fixed portion (22), adjacent the inner surface (32), on an opposite side; the cutting insert (14) comprising a generally cylindrical portion (44) having a longitudinal axis B and an axially extending radial projection (46) connected thereto, the radial projection having upper and lower surfaces (55, 62) connected to the cylindrical portion (44) and being separated by a side surface (57), the upper surface (55) and the side surface (57) meeting at an edge, at least a portion of which constitutes a cutting edge (56), and the lower surface (62) constitutes a first locating surface; the cutting insert (14) being located in the insert retaining portion (18) with the axially extending radial projection (46) protruding from the axially extending aperture (27) and the first locating surface (62) of the cutting insert abutting the first locating surface (36) of the insert retaining portion (18); the clamping jaw (24) being separated from the body portion (16) by a slot (26), and being resiliently displaceable relative to the fixed portion (22); and the cutting insert (14) being clamped in position by means of a resilient radial force exerted by the clamping surface (42) of the clamping jaw (24) on the generally cylindrical portion (44) of the cutting insert (14).