MACHINING PROCESS FOR TRAPEZOID RINGS WITH SMALL AXIAL DIMENSIONS, USED IN PISTONS OF INTERNAL COMBUSTION ENGINES.

摘要

The invention relates to a method for producing a piston (1) for internal combustion engines, said piston comprising a circumferential trapezoid annular groove (2) for receiving trapezoid rings with small axial dimensions and the groove having a groove base (5) with adjoining surfaces (6, 7) and groove flanks (3, 4). According to the invention, the groove base (5) with adjoining surfaces (6, 7) is created in a first method step by machining using a cutting steel (15) and the groove flanks (3, 4) are created in a further method step. Also disclosed are a piston (1) produced according to the claimed method and a cutting steel (15).