Patent ID: 6702529
Filing Date: 2004-03-09
Classification: B23B,Y10T

Abstract:
Metal cutting tool for parting comprising a thin holder formed of a first material, and a double-ended cutting insert formed of a second harder material, wherein the holder is provided with a forwardly open recess, the recess including a bottom wall, a rear wall, and an upper wall comprising part of an elastically movable clamping arm integral with the holder to frictionally secure the insert in the recess, the insert including upper and lower surfaces engaging the upper and bottom walls, respectively of the recess by respective ridge-and-groove connections of generally V-shaped cross section, the rear wall of the recess defining a support surface including a straightly upstanding upper part against which a straightly upstanding portion of a rear end surface of the insert abuts, the support surface extending upwardly from the bottom wall of the recess, the upper part of the support surface transforming into a first convexly shaped surface having a first radius, the first convexly shaped surface transforming into a second convexly shaped surface having a second radius smaller than the first radius, the second convexly shaped surface transforming into a concavely curved surface which defines a rear end of an extension of the recess.