Patent ID: 8388273

Claim:
A metal-cutting tool comprising a supporting tool which has a recess to accommodate a cuttin insert comprising a clamping trough held in the supporting tool by a clamping claw, wherein the clamping claw is fixed on the supporting tool with a clamping screw, and a pressure piece arranged on the clamping claw which comprises a cam on the underside facing the cutting plate which is in contact with the clamping trough, wherein the clamping claw pulls the pressure piece in the direction of the clamping screw, wherein the clamping trough is formed in a circular shape and in the center has a spherical or circular elevation, arid wherein the cam comprises a circular ring that is adapted thereto and tightly engages into the clamping trough while surrounding the elevation, wherein the pressure piece is secured to the clamping claw with clearance by way of a screw.