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:
Feb. 10, 2004
Filed:
Mar. 04, 2002
Applicant:
Inventors:
Tadashi Hiura, Hiroshima, JP;
Youichi Hangai, Hiroshima, JP;
Shigefumi Katsura, Chiba, JP;
Yoshitake Kohiro, Chiba, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21B 3/118 ;
U.S. Cl.
CPC ...
B21B 3/118 ;
Abstract
A roll shifting cylinder is driven to pivot a lever arm , thereby shifting a work roll via a thrust bearing . A control unit performs auto-positioning control, based on a shift amount performance value of the thrust bearing detected by a shift amount detection sensor , so as to obtain a target roll shift position. A constant clearance amount is maintained between an end surface of the work roll and the thrust bearing during a rolling operation, and a chockless mill is effectively used as a work roll shift mill.