Oil compression compensation system

Details Oil compression compensation system Oil compression compensation system

1988-01-26

1990-03-20

Bray, W. Donald

Metal deforming

By use of roller or roller-like tool-element

With carrier for roller-couple or tool-couple

91361, 91459, 72 8, 72 11, 72 20, B21B 3122

Patent

active

049090607

ABSTRACT:
A pre-set fluid actuator for setting the roll gap of a rolling mill having a transducer for detecting actuator movement and an electrohydraulic servovalve for controlling its position, a control system for compensating for the compressibility of the actuator fluid caused by the rolling force in a manner that requires no operation of the servovalve by creating a pre-set anticipating compression compensation signal and reducing the output of this signal by the output of a signal representing the actual fluid compression caused by the actual rolling force.

REFERENCES:
patent: 3427839 (1969-02-01), Neumann
patent: 3686907 (1972-08-01), Sokolov et al.
patent: 3766761 (1973-10-01), Adair et al.
patent: 4102171 (1978-07-01), Petry et al.
patent: 4537077 (1985-08-01), Clark et al.
patent: 4813256 (1989-03-01), Engel

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