The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 1985
Filed:
Feb. 15, 1983
Keiichi Miura, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A thickness control device and method for maintaining the thickness of the rolled material which is passed between the rollers of a rolling mill, in which the rollers above and below the rolling material are rotated at different speeds V.sub.H and V.sub.L. A variation in rolling material thickness is detected and expressed in terms of a change in rolling load WF. ##EQU1## is also detected. The change in rolling load .DELTA.F and the differential peripheral speed rate X are used to derive the change in differential speed rate .DELTA.X which would cancel out the variation in rolling material thickness. This correcting differential peripheral speed rate .DELTA.X is then utilized to change the velocities V.sub.H and V.sub.L of the upper and lower rollers, respectively, such that the thickness variation is eliminated without changing the speed of the rolled material.