High capacity hydraulic leveller

Details High capacity hydraulic leveller High capacity hydraulic leveller

1993-12-09

1995-10-31

Crane, Daniel C.

Metal deforming

With use of control means energized in response to activator...

Sensing tool or tool-linked part

72165, B21D 102

Patent

active

054618959

ABSTRACT:
An improved plate leveller comprising a housing, a rigid top beam and a bottom beam mounted on the housing, a flexible beam disposed between the upper rigid beam and the bottom beam and connected at the ends thereof to secondary bending cylinders mounted on the rigid top beam, upper back-up roll assemblies mounted on the flexible beam, lower back-up roll assemblies mounted on the lower beam, upper and lower work rolls disposed between the back-up roll assemblies, and a primary bending cylinder mounted on the rigid top beam and bearing on an upper surface of the flexible beam and, with the secondary bending cylinders, bending the flexible beam to counteract deflection of the bottom beam under load, thereby to maintain the upper and lower work rolls in parallel relationship to each other and providing uniform dimensions of plate passed therebetween.

REFERENCES:
patent: 3596489 (1971-08-01), Ball
patent: 3877270 (1975-04-01), Marten
patent: 4454738 (1984-06-01), Buta
patent: 4676085 (1987-06-01), Ellis
patent: 4730472 (1988-03-01), Ellis
patent: 4811586 (1989-03-01), Benz
patent: 5038591 (1991-08-01), Tajima

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