Patent ID: 7575149

Claim:
Method of connecting a metallic bolt ( 1 , 1 ′) to a plastic workpiece ( 2 ), comprising the following steps: providing a first plastic workpiece ( 2 ) and a metallic bolt ( 1 , 1 ′), and pressing the metallic bolt ( 1 , 1 ′) into a surface of the first plastic workpiece ( 2 ), the bolt ( 1 , 1 ′) being rotated during the pressing-in, and the rotational speed of the bolt ( 1 , 1 ′) being selected in such a way that the first plastic workpiece ( 2 ) is plasticized, so that the bolt ( 1 , 1 ′) is anchored in the first plastic workpiece ( 2 ) in a positive-locking manner after the rotation is stopped, wherein the metal of the metallic bolt ( 1 , 1 ′) is plasticized and deformed at a point ( 5 ) thereof, wherein the point ( 5 ) of the metallic bolt ( 1 , 1 ′) is arched in such a way that a diameter (D) of the point ( 5 ) is greater than that of that section of the bolt ( 1 , 1 ′) which is pressed into the first plastic workpiece ( 2 ).