DEVICE FOR SUPPORTING THE WORKING ROLL OF A SHEET BENDING OR LEVELLING MACHINE

摘要

1. A device for supporting the working roll (1) of a sheet metal bending or levelling machine, comprising backing rollers (2), which are distributed over the length of the working roll (1) and supported by a carrier (5) by means of positioning drives (4), each of which has associated with it a point of reference indicating the desired position of engagement of the backing rollers (2), characterized in that each positioning drive (4) has associated with it a measuring device (8) for measuring the deviation of the actual position of engagement of the associated backing roller (4) from the desired position of engagement when the carrier (5) is unloaded, which desired position of engagement is determined by the point of reference, which has a fixed three-dimensional relation to the position of engagement of the working roll (1), and the positioning drives (4) are adapted to be controlled by a controller (14) in dependence on the existing difference between the desired and actual values.