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

Abstract

The invention relates to a seamless pipe tandem rolling machine rolling roller bias test device and the test method, a lifting hydraulic pressure cylinder and an impelling hydraulic pressure cylinder of the displacement sensor are fixed on the test frame, which are connected with a computer by cable and are communicated with a hydraulic pressure pump. A rolling roller and a bearing box are arranged on the test frame, the impelling hydraulic pressure cylinder presses the rolling roller loop against to a return board; the displacement sensor inputs the tested numerical value to the computer to converse and sort out, then get the practical bias value of the top nest work surface of the bearing box from the centre line of the rolling roller. The lifting hydraulic pressure cylinder makes the pore-typed sample stick to the roller roll pore, the displacement sensor inputs the tested numerical value to the computer to sort out, then achieve the practical bias value of the cushion block working surface of the bearing box from the centre of the rolling roller pore. The invention overcomes the gap among the machines, excludes artificial error and removes safety danger, which makes the measurement accuracy is increased into 2 to 3 times than the artificial measurement value, the test time can be shorten for 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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