Patent ID: 6394709
Filing Date: 2002-05-28
Classification: B23B,Y10T

Abstract:
A tool comprising:a holder including an insert pocket comprised of a bottom surface and at least one side surface upstanding therefrom; a cutting insert seated in the pocket against the bottom surface and the at least one side surface, the insert including a top face; a clamp plate seated on the cutting insert, the clamp plate including: a planar underside engaging the top face of the insert, and a through-hole extending upwardly through the underside and completely through the clamp plate, the through-hole having a cross section decreasing downwardly toward the underside; a top clamp comprising a clamp arm mounted on the holder and defining a longitudinal axis extending in a direction defining a front-to-rear direction, the clamp arm including: a downwardly projecting first protrusion disposed at a front end of the clamp arm, the first protrusion projecting downwardly into the through-hole of the clamp plate and into engagement with a wall of the through-hole, wherein substantially all of the protrusion is disposed in the through-hole, the clamp plate formed of a harder material than the clamp arm, a downwardly projecting second protrusion disposed at a rear end of the clamp arm and engaging a portion of the holder, and a clamp screw extending downwardly through the clamp arm and threadedly engaged in a bore formed in the holder for drawing the second protrusion into engagement with the portion of the holder and the first protrusion into contact with the wall of the through-hole.