A method for automatic calibration and accuracy verification of the roll gap of the coiler auxiliary roll

Abstract

The invention discloses a coiling machine wrapper roller roll-gap automatic calibration and precision verification method which comprises the following calibration steps in specific: (1) selecting a to-be-calibrated wrapper roller on an OPU operation panel; (2) turning on a wrapper roller calibration picture to switch the working mode of the coiling machine wrapper roller to the calibration operation mode (CAL); (3) switching the state of a coiling block to the pre-rising state on the OPU operation panel; and (4) clicking calibration START on the calibration picture, wherein the selected calibrated wrapper roller gradually presses and leans against the coiling block from 10.0 mm roll-gap state, and when the speed feedback of the wrapper roller reaches 0.8 m / s, a system identifies that the roll-gap of the wrapper roller at the moment is 0 mm and transmits the information to a control system through a position sensor. With adoption of the coiling machine wrapper roller roll-gap automatic calibration and precision verification method, unsafe factors during the calibration process are eliminated, the operation is convenient, limitation from the onsite working environment is prevented, the situation that the wrapper roller roll-gap is sequentially measured manually through a feeler gauge is avoided, error caused by manual measurement is eliminated, and the precision is greatly improved.

Description

technical field [0001] The invention relates to a calibration method, in particular to a method for automatic calibration and accuracy verification of roll gaps of winding-aid rolls of a coiler. Background technique [0002] The hot-rolled strip coiler includes important equipment such as side guides, pinch rolls, roll rolls, mandrels, and movable supports. Each coiler has 3 roll rolls, namely 1# roll roll (WR1) , 2# help roll (WR2), 3# help roll (WR3), encircling around the reel in turn, such as figure 1 shown. [0003] The winding aid roller has the following operation modes: manual operation mode (MAN), semi-automatic operation mode (SMI), automatic operation mode (AUTO), calibration operation mode (CAL). The roll gap of the auxiliary roller refers to the distance between the auxiliary roller and the reel (the reel position is divided into three states, tightening, pre-expansion, and full-expansion. At this time, the reel is in the pre-expansion state). The action proc...

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Problems solved by technology

[0005] However, the realization of the above functions depends on precise control of the roll gap accuracy of the roll roll. The traditional roll gap calibration method has been using manual calibration of the roll roll gap, that is, when calibrating the roll gap, manually enter the coiler , drive the winding-assisting roller to the smaller roll gap, use a feeler gauge to measure the gap between the winding-assisting roller and the reel, and use the measured value as the roll gap of the winding-assisting roller to read and calibrate in the calibration screen

There are large errors in manual measurement, and it is dangerous to manually enter the coiler to measure the roll gap of the auxiliary roll. It takes a long time to calibrate the three auxiliary rolls of a coiler, and the accuracy is not high, which restricts the normal production and operation of the site; With the exploration of on-site experience, it is proposed to use the closed-loop pressure system of the roll roll to automatically calibrate the roll gap of the roll roll: even if the pressure of 2.5 tons is used as the calibration pressure to automatically calibrate the roll gap of the roll roll, but in practice, the roll roll roll is not The pressure fluctuates greatly, it is difficult to ensure that it is within the range of 2.5 tons, and it is still impossible to realize the automatic calibration of the roll gap

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