A Method to Eliminate Zero Position Error

Abstract

The invention provides a method for eliminating a zero error. The method comprises the steps that the zero position calibrated mechanically is recorded; the relative position between a magnetic ring and a magnetic ruler of each channeling roll cylinder is set to be zero; first moving blocks on an operation side are controlled by the channeling roll cylinders to move to the zero position; the first moving blocks are controlled by the channeling roll cylinders to move towards the operation side from the zero position by a preset distance; the first moving blocks are controlled to move towards a drive side to the zero position; and by means of the preset distance, it is ensured that the first moving blocks precisely move to the zero position. Thus, the zero error caused by accumulated gap values of all components can be eliminated, it is ensured that the first moving blocks and second moving blocks can precisely move to the zero position, it is ensured that clamping plate cylinders are in an opened state, a work roll can be replaced safely, rapidly and automatically, and then the roll replacement time is shortened, the work efficiency is improved, and manual operation accidents are avoided.

Description

technical field [0001] The invention belongs to the technical field of hot-rolled steel strips, and in particular relates to a method for eliminating zero error. Background technique [0002] In the production process of hot-rolled strip steel, it is often necessary to replace work rolls. In order to quickly and safely replace work rolls, it is necessary to calibrate the zero position. [0003] In the prior art, the calibration method for the zero position of the roll shifting system of the finishing mill is as follows: firstly, use a jack to move the four moving blocks on the transmission side to the zero position before loading the rolls; secondly, manually move the roll shifting cylinder to move the four moving blocks on the operating side The moving block moves to the zero position in turn; then record the zero value of mechanical calibration on the automatic roll changing program of the host computer, perform zero marking on the program, install work rolls, start the ma...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a method for eliminating the zero position error, which is used to solve the problem that in the prior art, when the work roll is replaced, the moving block cannot be accurate due to the increased zero position error of the roll shifting system. Moved to the zero position, causing the clamping cylinder to be closed, and the technical problem that the work roll cannot be replaced automatically

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