Error measuring device of weldless pipe continuous rolling mill roller and detecting method thereof

Abstract

The invention relates to a detection device and method for deviations in rolls of seamless pipe tandem mill. A lifting hydraulic cylinder and an impelling hydraulic cylinder which are respectively equipped with a displacement sensor and fixed on a detection frame body are connected with a computer through a cable, and are also communicated with a hydraulic pump. A roller and a bearing box are arranged on the detection frame body, the impelling hydraulic cylinder presses the roll ring of the roller onto a slide; the displacement sensor respectively inputs the detected values into the computer for conversion and sorting, then the actual deviations of the top nest work surface of the bearing box from the centre line of the roller is obtained. The lifting hydraulic cylinder makes the pass template to adhere to the pass of the roller, the displacement sensor inputs the detected values into the computer for sorting out, and the actual deviations of the cushion work surface of the bearing box from the pass centre of the roller can be obtained. The invention eliminates various mechanical clearances, excludes any artificial error and removes any hidden danger, improves the measurement accuracy by 2 to 3 times than the artificial measuring way, and the detection time can be shortened by 5 hours.

Description

technical field [0001] The invention belongs to the technical field of roll detection technology of a seamless steel pipe rolling mill, and in particular relates to a deviation measuring device and a deviation measuring method for a roll centering positioning system of a seamless steel pipe continuous rolling mill. Background technique [0002] Continuous rolling mills for seamless tubes, including five-stand two-roller continuous rolling mills for seamless tubes, are relatively advanced production equipment for seamless tubes in the world today. The precision of the equipment is high, the rolling speed is fast, especially the continuous rolling method, and the requirements for the line speed of each rolling mill and the metal flow rate per second are also very precise. Any error may cause steel stacking or drawing accidents. cause irreparable loss. Therefore, it is particularly important to accurately measure the deviations of the roll alignment system, that is, the rolls....

AI Technical Summary

Problems solved by technology

[0003] However, the current domestic method of measuring the deviation of the roll stack alignment system of the continuous rolling mill for seamless tubes still uses the manual measurement method using a flat ruler and a micrometer.

The main problems in this method are: first, the measurement work is cumbersome, the measurement preparation and measurement time are long, and the production is delayed; second, there are many influencing factors, and the gaps between the parts and components cannot be eliminated, so that the measured value and the actual deviation exist. The large gap requires artificial adjustment based on experience; the third is that the human factor is large, and it is difficult to guarantee the measurement accuracy by the operator using simple tools to measure the accurate deviation value

In particular, it is impossible to manually measure the deviation value of the installation face of the bearing box pad from the center of the roll pass.

In addition, there are still various unsafe factors and other defects, so the method of manual measurement can no longer meet the actual production and higher quality requirements

[0004] After searching and consulting relevant literature, no effective method and related reports have been found to solve this problem

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