Patent ID: 8561452
Filing Date: 2013-10-22
Classification: B21J

Abstract:
1. A forging apparatus comprising (a) a housing; (b) a plurality of first abutments provided on the housing; (c) a forging axis; (d) a frame rotatably mounted about the forging axis; (e) a plurality of tool holders radially guided in the frame; (f) a plurality of second abutments provided on the tool holders; (g) a plurality of lifting drives connected with the tool holders, each lifting drive comprising a respective connecting rod pivotally supported by the first abutments and by a respective second abutment of the plurality of second abutments; (h) a plurality of forging tools provided in the tool holders and arranged symmetrically around the forging axis; (i) a common drive for the lifting drives comprising a torsional vibration drive provided between the housing and the frame, said torsional vibration drive comprising an eccentric shaft drive, said eccentric shaft drive comprising a radially adjustable eccentric shaft; and (j) a belt pulley for driving the eccentric shaft around an axis of the eccentric shaft; wherein the frame comprises at least one abutment actuator driven by the torsional vibration drive for the first abutments or the second abutments and at least one lifting drive actuator for the common drive for the lifting drives.