Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1987-08-05
1989-02-21
Spruill, Robert L.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 11, 72 16, 72 20, 72234, 72243, 72245, 364472, B21B 122, B21B 3700
Patent
active
048054925
ABSTRACT:
In rolling mill equipment provided with a roll bending mechanism for removing an unacceptable shape of a plate in width direction of the plate and a crown of a plate in the form of an uneven configuration at both edges with respect to a center line of the plate, there is disclosed a method for controlling a shape of a plate in an attempt to avoid producing abnormal shape in said width direction. The method comprises sequentially finding preset values of a roll bending force from preceding to succeeding stage of feed so as to fulfill both restriction of plate shape and restriction of roll beinding force by a set of stands provided in plural at suitable places in a direction of feeding plates, each strand comprising a pair of work rolls, a pair of backup rolls, a roll bending force setting unit, using the thus obtained roll bending force, the maximum and minimum crowns at the final stand and an target crown determined by a thickness, tension and the like of a plate to be rolled to decide a preset value of the roll bending force in each stand, whereby providing a control so that the width shape caused by rolling is improved in profile regularity.
REFERENCES:
patent: 4633692 (1987-01-01), Watanabe
patent: 4633693 (1987-01-01), Tahara et al.
patent: 4683744 (1987-08-01), Ginzburg et al.
patent: 4711109 (1987-12-01), Rohde et al.
patent: 4715209 (1987-12-01), Oshima
Katz Steven B.
Mitsubishi Denki & Kabushiki Kaisha
Spruill Robert L.
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