Working head multiple press for sheet metal punching machine with numerical control.

摘要

Workhead Multipress numerical control of a punching machine sheet metal, comprising a plurality of hydraulic presses (1), close to each other and each is formed by a hydraulic cylinder (2) in which slides a corresponding piston (3), and a plurality of punches (6) driven by respective pistons (3) of said hydraulic presses (1) said pistons (3) operatively connected with said punches (6) so being that said punches (6) are rigidly movement of said pistons punch (3) and yet have a stroke elastically controlled return independently of the position of said pistons (3), wherein: a) said pistons (3) they are grouped forming sets of pistons associated with a single position transducer corresponding (20) with unidirectional mechanical connection so that the transducer (20) follows the Stroke nto punching any of said pistons (3) while the other pistons (3) remain stationary; and that b) at least one of said pistons (3) is coupled to several punches (6) through a selector (22) so as to control at any time the punching movement of the punch selected one of said punches (6 ).