EP 1445042 A1 20040811 - Multipress operating head for sheet metal punching machine with numerical control
Title (en)
Multipress operating head for sheet metal punching machine with numerical control
Title (de)
Mehr-Stösselbearbeitungskopf für eine numerische gesteuerte Maschine zum Stanzen von Blechen
Title (fr)
Tête de travail à poinçons multiples pour une machine à poinçonner des tôles à commande numérique
Publication
Application
Priority
IT MI20030218 A 20030207
Abstract (en)
A multipress operating head for sheet metal punching machine with numerical control is described comprising a plurality of hydraulic presses (1), close to each other and each one made up of a hydraulic cylinder (2) in which a respective piston (3) slides, and a plurality of punches (6) set into action by respective pistons (3). The pistons (3) are grouped into sets of pistons associated with a respective single position transducer (20) with unidirectional mechanical connection so that the transducer (20) follows the punching movement of any one of said pistons (3) while the other pistons (3) remain at rest. At least one of said pistons (3) is coupled to several punches (6) through a selector (22) so as to control each time the punching movement of a selected one of said punches (6). Said pistons (3) are operatingly connected with said punches (6) so that said punches (6) rigidly follow the movement of said punching pistons (3) and have instead back strokes elastically controlled in a way independent from the position of said pistons (3). <IMAGE>
IPC 1-7
IPC 8 full level
B21D 28/24 (2006.01); B21D 28/26 (2006.01)
CPC (source: EP)
B21D 28/246 (2013.01); B21D 28/26 (2013.01)
Citation (search report)
- [A] EP 0140373 A2 19850508 - DIETZ NC WERKZEUGSYSTEME [DE]
- [A] EP 0183298 A2 19860604 - SALVAGNINI TRANSFERICA SPA [IT]
- [A] US 4391123 A 19830705 - SALVAGNINI GUIDO [IT]
- [A] US 5301585 A 19940412 - HOSAKA MAKOTO [JP]
- [A] US 4700441 A 19871020 - IKEDA HIDEKATSU [JP], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1445042 A1 20040811; EP 1445042 B1 20060426; EP 1445042 B8 20060816; AT E324200 T1 20060515; DE 602004000696 D1 20060601; DE 602004000696 T2 20060921; DK 1445042 T3 20060821; ES 2262086 T3 20061116; IT MI20030218 A1 20040808
DOCDB simple family (application)
EP 04075317 A 20040203; AT 04075317 T 20040203; DE 602004000696 T 20040203; DK 04075317 T 20040203; ES 04075317 T 20040203; IT MI20030218 A 20030207