Abstract: The ejector, penetrating the lower die of the wobble die forging machine, bears a punch vertically displaceable to the former, which interacts with a cutter arranged centrically and rigidly in the upper die to penetrate the workpiece and thrust the thereby resulting excess material into the cutter under the effect of a superimposed movement of stroke of the ejector piston, the movement of stroke of the piston bearing the lower die, and the wobble movement of the upper die. In this way, highly precise through bore in respect of diameter and rotation can be reached, whereby, in addition to this, a concentration of material can be achieved in the hitherto always soft core of the workpiece, which comes nearer to that in the formed edge regions of the workpiece, with which a wall of a hole of finest finish and very high strength results.