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1. (WO1979000805) PROCESS AND DEVICE FOR ADJUSTING THE DEPTH OF PENETRATION OF A PUNCH IN A FOLDING PRESS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000805 International Application No.: PCT/CH1979/000044
Publication Date: 18.10.1979 International Filing Date: 20.03.1979
IPC:
B21D 5/02 (2006.01) ,B30B 15/18 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING
5
Bending sheet metal along straight lines, e.g. to form simple curves
02
on press brakes without making use of clamping means
B PERFORMING OPERATIONS; TRANSPORTING
30
PRESSES
B
PRESSES IN GENERAL; PRESSES NOT OTHERWISE PROVIDED FOR
15
Details of, or accessories for, presses; Auxiliary measures in connection with pressing
16
Control arrangements for fluid-driven presses
18
controlling the reciprocating motion of the ram
Applicants:
Inventors:
Priority Data:
3056/7821.03.1978CH
Title (EN) PROCESS AND DEVICE FOR ADJUSTING THE DEPTH OF PENETRATION OF A PUNCH IN A FOLDING PRESS
(FR) PROCEDE ET DISPOSITIF POUR REGLER LA PROFONDEUR DE PENETRATION DU POINCON D"UNE PRESSE A PLIER
Abstract:
(EN) Process and device used for adjusting the depth of penetration of a hydraulic folding press. They allow to adjust the depth stop (3) of the pressure bed (4), without being necessary to lift the pressure bed from the workpiece. The depth stops (3) are relieved temporarily by a pressure in the cylinders acting in the opposite direction of the pressure bed (4), for example in double-acting cylinders (2) without any pressure drop on the workpiece. It allows a precision adjustment of the penetration depth in one operation. The process can be applied to folding presses having a mechanical or hydraulic travel limiting device.
(FR) Le procede et le dispositif servent a regler la profondeur de penetration d"une presse a plier hydraulique. Ils permettent un ajustage des butees de profondeur (3) du sommier de pression (4), sans qu"on ait besoin de lever le sommier de pression de la piece a travailler. Les butees de profondeur (3) sont soulagees temporairement par une pression dans les cylindres agissant en sens inverse du sommier de pression (4), par exemple dans des cylindres a double effet, (2) sans que la pression sur la piece a travailler ne soit diminuee. Cela permet un reglage precis de la profondeur de penetration en une seule operation. Le procede est applicable sur des presses a plier possedant un limiteur de course mecanique ou hydraulique.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)