Piston-glide shoe combination in a variable-crown roll

Details Piston-glide shoe combination in a variable-crown roll Piston-glide shoe combination in a variable-crown roll

1987-05-29

1988-10-11

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291131, 291162, 100162B, B21B 2700

Patent

active

047760699

ABSTRACT:
A piston-glide shoe combination for use in a zone-adjustable variable-crown roll comprising a stationary central axle and a cylindrical roll mantle rotatably mounted on the central axle, the glide shoes of the combinations being loaded by hydraulic fluid pressure against the inner surface of the roll mantle so as to control the distribution of nip pressure in a nip formed by the variable-crown roll and a counter-roll. The piston-glide shoe combination includes an auxiliary chamber arrangement into which the pressure fluid is passed from the lubrication chambers and/or glide surface regions of the glide shoe through ducts so that when the pressure in the lubrication chambers and/or on the glide surface regions of the glide shoe is reduced, the reduced pressure is transmitted through the duct to a particular auxiliary chamber or chambers so that a torque tending to stabilize the play at the glide surface of the glide shoe that causes the reduced pressure.

REFERENCES:
patent: 3802044 (1974-04-01), Spillmann et al.
patent: 3846883 (1974-11-01), Biondetti
patent: 4186472 (1980-02-01), Biondetti
patent: 4373238 (1983-02-01), Guttinger
patent: 4661206 (1987-04-01), Heitmann et al.
patent: 4705602 (1987-11-01), Dahl

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