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....

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