Friction compensation in a rolling mill having automatic gage co

Details Friction compensation in a rolling mill having automatic gage co Friction compensation in a rolling mill having automatic gage co

1983-06-30

1984-12-11

Larson, Lowell A.

Metal deforming

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

Metal deforming by use of roller or roller-like tool element

72 20, 364472, B21B 3712

Patent

active

044870442

ABSTRACT:
A rolling mill stand which includes roller elements for reducing the thickness of a workpiece which is passed therebetween further includes an adjusting mechanism for adjusting the gap between the roller elements and a sensor for sensing the roll separation force occasioned by passing the workpiece between the roll elements. The stand also includes a sensor for sensing the roller elements position and an automatic gage control device for controlling the gap adjustment mechanism as a function of the roll separation force. Associated with the rolling mill stand is a method of compensating for friction forces within the rolling mill stand occuring as a result of movement of the roller elements so as to improve the accuracy and stability of the automatic gage control.

REFERENCES:
patent: 3081652 (1963-03-01), Wright et al.
patent: 3613419 (1971-10-01), Silva
patent: 3704609 (1972-12-01), Sterret, Jr.
patent: 3787667 (1974-01-01), King et al.
"Mill Modulus Variation and Hysteresis--Their Effect on Hot Strip Mill AGC", by G. E. Wood et al., Iron and Steel Engineer Yearbook, 1977--pp. 33-39.
"Force Sensing in Rolling Mills", by A. Zeltkalns et al., Iron and Steel Engineer Yearbook, 1977--pp. 40-46.

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