Hydraulically operated press brake

Details Hydraulically operated press brake Hydraulically operated press brake

1992-11-04

1994-03-15

Le, Mark T.

Brakes

Plastic deformation or breakage of retarder element

72389, B21D 501

Patent

active

052939723

ABSTRACT:
The invention provides a hydraulically operated press brake with a vertically displaceable upper pressure ram member. The pressing force is induced in the region of the two lateral ends thereof. A cooperating stationary ram member is arranged opposite to the movable ram member and is freely suspended in the region of its two lateral ends. The upper movable ram member is subdivided into two portions, whereby the two portions rest on each other at a centrally located contact area. From this contact area, two gaps extend approximately horizontally, both having increasing width from the contact area to the lateral ends of the ram member. The pressing power is induced into the upper ram member portion. Thus, it can be achieved that the upper ram member and the lower ram member are deflected in the same sense under load such that the deflection lines run essentially parallel to each other.

REFERENCES:
patent: 4045995 (1977-09-01), Sparks
patent: 4426873 (1984-01-01), Pearson et al.
patent: 4449389 (1984-05-01), Cros
patent: 4580434 (1986-04-01), Graf
patent: 5067340 (1991-11-01), MacGregor
patent: 5193452 (1993-03-01), Dieperink

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