Patent ID: 6244087
Filing Date: 2001-06-12
Classification: B21J

Abstract:
A swaging machine for swaging a rod-shaped or tubular workpiece, which comprises(a) a forging box rotatably drivable about an axis of movement of the workpiece through the forging box,(b) a supporting ring coaxially surrounding the forging box, the forging box and the supporting ring being rotatable relative to each other,(c) hammering units guided in radial recesses of the forging box for movement towards the axis of movement of the workpiece, each hammering unit including(1) outer hammering rams having a head portion and(2) inner hammering tools,(d) plungers non-rotatably seated in the supporting ring,(e) pressure members acting on the hammering rams, the head portions of the hammering rams protruding into a path of rotation of the pressure members and the pressure members imparting a radially inwardly directed pressure pulse upon the hammering rams when the pressure members pass by the head portions of the hammering rams, the pressure members including(1) a pressure plate pivotally mounted on an end face of the plungers for swivelling in a stop-limited manner about a rocking axis extending parallel to the axis of movement of the workpiece,(f) counter-pressure plates forming the head portions of the hammering rams and being pivotal for swivelling in a stop-limited manner about another rocking axis extending parallel to the axis of movement of the workpiece,(1) the pressure plates and counter-pressure plates forming cooperating slide faces, and(g) restoring springs for biasing the pressure and counter-pressure plates into a starting position which is forwardly inclined in the direction of the rotation of the forging box and supporting ring relative to each other.