Method and device for producing holes in the wall of a hollow bodied workpiece.

摘要

The invention proposes a method for producing a hole in the wall of a work piece (1) designed as a hollow body, in which the work piece (1) is inserted into a form tool (2) which limits its radial expansion and is provided in the region of the envisaged hole with a recess (6) having an edge contour corresponding to the hole. The cavity (3) of the work piece (1) is then pressurised with a working medium up to an internal pressure pi which causes the edge (10) of the recess (6) to cut into the wall of the work piece. This advantageously takes place during another forming operation performed on the work piece (1) using the internal high-pressure forming method.