Method for operating a roll straightening machine, and roll straightening machine

Abstract

A method for operating a roll straightening machine having a number of forming tools, the forming tools including at least one set of upper and lower straightening rollers, a flat metal material to be straightened being conveyed between the upper and lower straightening rollers in a conveying direction. In order to achieve high straightening quality even as wear occurs, the method includes the following steps: a) determining the wear state of at least one of the forming tools; b) determining a correction value and/or a compensation value for the operation of the forming tool on the basis of the determined wear state of said forming tool; c) adapting an operating parameter, in particular an adjustment parameter or setting value, for the forming tool on the basis of the determined correction value and/or compensation value.

1 - 14 . (canceled) 
     
     
         15 . A method for operating a roll straightening machine that has a number of forming took, wherein the forming took comprise at least one set of upper and lower straightening rollers, wherein a metallic flat material to be straightened is conveyed in a conveying direction between the upper and the lower straightening rollers, wherein the method comprises the steps of:
 a) determining a state of wear of at least one of the forming tools;   b) determining a correction value and/or an equalization value for operating the forming tool by virtue of the determined state of wear of said forming tool; and   c) adapting an operating parameter for the forming tool while basing said operating parameter on the determined correction value and/or equalization value,   wherein the straightening rollers are individually driven and individually actuatable and wherein the adapting of an operating parameter according to step c) includes adapting rotating speed of a straightening roller and/or an actuated position of the straightening roller and/or a modification of an applied bending moment for a bending compensation.   
     
     
         16 . The method according to  claim 15 , wherein the operating parameter is an actuation parameter or setting valve. 
     
     
         17 . The method according to  claim 15 , wherein the at least one forming tool is a straightening roller, a support roll, and/or an actuating system for the straightening roller. 
     
     
         18 . The method according to  claim 15 , wherein the determining of the state of wear of at least one of the forming tools according to step a) includes manually measuring wear of the forming tool with subsequent inputting of a measured value into a machine controller. 
     
     
         19 . The method according to  claim 15 , wherein the determining of the state of wear of at least one of the forming tools according to step a) includes an automatically carried out measuring procedure and an automated comparison with a nominal value. 
     
     
         20 . The method according to  claim 15 , wherein the determining of the state of wear of at least one of the forming tools according to step a) includes determining the wear by virtue of a predefined empirical wear behavior of the forming tool. 
     
     
         21 . The method according to  claim 15 , wherein the determining of the state of wear of at least one of the forming tools according to step a) is performed by a calibrating procedure of the roll straightening machine, wherein data determined during the calibrating are compared with data of a calibrating procedure carried out earlier and a conclusion pertaining to intervening wear is drawn on account thereof. 
     
     
         22 . The method according to  claim 15 , wherein the determining of a correction value and/or an equalization value for the operating of the forming tool according to step b) is performed by virtue of a simulation calculation that is based on a simulation model of the roll straightening machine. 
     
     
         23 . The method according to  claim 15 , wherein the determining of a correction value and/or an equalization value for the operating of the forming tool according to step b) is performed by virtue of a predefined characteristic line that predefines the state of wear over time. 
     
     
         24 . A roll straightening machine, comprising:
 a number of forming tools, wherein the forming tools comprise at least one set of upper and lower straightening rollers, wherein a metallic flat material to be straightened is conveyable in a conveying direction between the upper and the lower straightening rollers;   means for identifying wear of at least one of the forming tools;   means for compensating the identified wear on the forming tools; and   means for individually driving and individually actuating the straightening rollers as well as for adapting rotating speed of a straightening roller and/or an actuated position of the straightening roller and/or for modifying an applied bending moment for a bending compensation.   
     
     
         25 . The roll straightening machine according to  claim 24 , further comprising a machine controller for controlling the means for compensating the identified wear on the forming tools. 
     
     
         26 . The roll straightening machine according to  claim 24 , wherein the means for identifying wear include measuring means for detecting force, pressure, drive torque, and/or travel. 
     
     
         27 . The roll straightening machine according to  claim 24 , wherein the means for compensating the identified wear include a bending system for the straightening rollers and/or an actuating system for the straightening rollers. 
     
     
         28 . The roll straightening machine according to dam  24 , wherein the means for compensating the determined wear includes a technological mod& of the roll straightening machine.