Patent ID: 6212929
Filing Date: 2001-04-10
Classification: B21C

Abstract:
Apparatus for the forming, in particular for the cold-forming or cold extrusion, of an elongated workpiece having a longitudinal direction, which has a die (3) and a feeding device (5), by means of which a relative motion in a direction of feed (P) between the workpiece (2) and the die (3) is realized, said direction of feed (P) coinciding with the longitudinal direction of the workpiece (2) characterized in that the apparatus (1; 1') has a frequency generating device (10) which works together with the feeding device (5) and by means of which the relative motion between workpiece (2) and die (3), produced by the feeding device (5), is modulated in such a way that after a forward stroke, in which at least one of the workpiece (2) and the die (3) is moved a first stroke length in the direction of feed (P), in a subsequent reverse stroke, a movement of at least one of the die (3) and the workpiece (2) by a second stroke length is carried out in a direction contrary to the direction of feed (P).