DEVICE FOR COMPENSATING ECCENTRICITY OF SLEEVE OF SLEEVE TYPE DIVIDED BACK-UP ROLL

摘要

PURPOSE:To roll a rolled stock without thickness fluctuation by compensating the eccentricity of sleeve even when this eccentricity is generated. CONSTITUTION:In a rolling mill provided with a dividing type back-up roll 59, a rolling force fluctuation conversion signal PS which is obtained by converting screw-down position deviation signal S with which the screw-down position deviation in a screw-down position is indicated is subtracted from rolling force fluctuation signal P with which rolling force fluctuation due to the eccentricity of sleeve is indicated. Whenever a striker 2 approaches proximity switches 1a-1d, a compensation signal B is determined by inputting a signal P-PS into a computer 11. Further, by controlling the screw-down device in accordance with the difference between a screw-down position correction signal C which is converted from the compensation signal B and the screw-down position deviation signal S, thickness fluctuation is eliminated.