JPS5564922A - Controller for rolling work for sheet material with thickness varying in longitudinal direction - Google Patents

Abstract

PURPOSE: To improve the accuracy of product with thickness varying in the longitudinal direction, and to reduce the installation cost, by arranging the pretreatment computer for obtaining the width-direction function and the thickness-direction function which is corrected with the predicted influence of the roll diameter and the roll deflection, and the roll gap computer for controlling the width and thickness, etc.

CONSTITUTION: The rolled material 1 is sent in the arrowed direction A and is rolled by the width-direction rolling mill 2 and the thickness-direction rolling mill 5. The movement of the material 1 is inputted from the detector 12 to the width controlling computer 8a; the computer 8a operates the roll gap corresponding to the longitudinal position from above inputted material movement and the previously set width-direction function 53; the computer 8a produces the result as the output. This output is inputted to the servo-amplifiers 14a, 14b, through the D/A converters 13a, 13b; the position of the width-direction rolling rolls 2a, 2b, is changed through the servo- valves 18, 19, so as to make this input to coincide with the input from the roll position measuring device 17. The controller for the thickness-direction rolling mill 5 is approximately similarly constituted, and the gap of rolls 5a, 5b, is controlled by the thickness-direction function computer 8b for predicting and correcting at least one influence of the roll diameter and the roll deflection.

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