Apparatus for synchronizing cylinder position in a multiple cyli

Details Apparatus for synchronizing cylinder position in a multiple cyli Apparatus for synchronizing cylinder position in a multiple cyli

1986-11-18

1989-01-10

Ruggiero, Joseph

Boots, shoes, and leggings

72 21, 72389, 72702, 364476, G06F 1546, B21D 502

Patent

active

047978317

ABSTRACT:
An electronic control system for operating the hydraulic cylinders associated with a press brake wherein independent control of each of the hydraulic cylinders is achieved to insure that the cylinders track against a fixed reference to insure more accurate forming of the workpiece. The cylinder tracking is under computer control which also establishes a creep speed slower than the normal forming speed near the point of ram reversal. A plurality of press brake may be operated simultaneously from the same tracking reference.

REFERENCES:
patent: 4112493 (1978-09-01), Roch et al.
patent: 4148203 (1979-04-01), Farazandeh et al.
patent: 4408471 (1983-10-01), Gossard et al.
patent: 4511976 (1985-04-01), Graf
patent: 4640113 (1987-02-01), Dieperink et al.

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