Patent ID: 6514019
Filing Date: 2003-02-04
Classification: B23B,Y10S,Y10T

Abstract:
A boring tool comprising:a holder which extends in the direction of a longitudinal axis and which has a holder shank portion and a head portion, in which there is formed a groove running in the direction of a transverse axis orthogonal to the longitudinal axis so as to form first and second groove branches on the head portion, a cutting insert inserted in the groove and a clamping element, which passes through a receiving bore formed in the cutting insert and a bore formed in at least one of the groove branches, and which clamps the cutting insert against said first groove branches, wherein the central axis of the bore in said first groove branch is offset relative to the central axis of the receiving bore in the cutting insert, and wherein the clamping element and the cutting insert form a wedge-face mechanism such that the cutting insert in an assembled condition of the boring tool is pressed in the direction of the longitudinal axis against a first stop face and in the direction of the transverse axis against a second stop face, wherein the cutting insert is provided with an extension which runs in the direction of the longitudinal axis and which reaches into a recess which extends from a groove base face of the groove in the direction of the longitudinal axis to the shank portion, and in which there is provided the second stop face, and the second stop face as well as a side face on the extension of the cutting insert bearing against the second stop face are formed as one of plane faces and curved faces which are parallel relative to the longitudinal axis.