Patent ID: 6969218

Claim:
A profiled turning tool for rough-turning and dressing circumferential and flat surfaces on workpieces made of light metals, comprising of a rod-shaped holder ( 10 ) with a receiver ( 16 ) for a cutting element ( 18 ) with a rounded cutting head, whose cutting edge ( 42 ) is made of diamonds or cubical boron nitride and extends over a circumferential angle of more than 90Â°, and of a claw ( 20 ), engaging a longitudinal groove ( 26 ) in the holder ( 10 ) and having a front end ( 32 ) in form of a chip breaker, which claw clamps the cutting element ( 18 ) to the holder ( 10 ) by means of a tightening screw ( 22 ) being screwed into the holder ( 10 ), characterized in that the center longitudinal axis of the cutting head ( 18 ) extends in the longitudinal direction through the groove ( 26 ), whose base has a concave form in cross section and forms a pivot bearing for the claw ( 20 ), which is convexly shaped on its underside in the engagement area and is guided on the lateral walls of the groove ( 26 ), and that ahead of the center of the convexity, the tightening screw ( 22 ) extends with play through a hole ( 28 ) in the claw ( 20 ).