Method for adjusting working clearances of antifriction bearings of rolling device of seamless steel tube cold rolling mill

Abstract

The invention provides a method for adjusting working clearances of antifriction bearings of a rolling device of a seamless steel tube cold rolling mill. According to the method, a standard plate, a 90-degree angle square, a bottom gasket, a top weight, a vernier caliper, a gauge and a filler gauge are adopted to form measurement tools. The standard plate serves as the measuring basis, the 90-degree angle square serves as a vertical check tool, the bottom gasket is used for supporting the end face of a lower side outer ring of a lower side bearing, and the top weight is pressed on the end face of an upper side outer ring. Three axial distances of the bearings are measured one by one from bottom to top through the vernier caliper or the gauge, the antifriction bearings are arranged upside down, and then distances between the bearing outer rings are measured one by one from bottom to top again. Measurement errors can be corrected through four measuring points and two times of measurement, the thickness of a spacer can be determined through computation, and the working clearances can be adjusted quickly and accurately.

Description

technical field [0001] The present invention relates to cold-rolling production equipment for producing seamless steel pipes, in particular to a method for adjusting the working clearance of rolling bearings in roll devices of seamless steel pipe cold-rolling mills, and is especially suitable for adjusting the working clearance of 4-row tapered roller bearings used in roll devices Fine adjustment. Background technique [0002] Rolling bearings are common mechanical parts. Bearing clearance refers to the amount of movement when the inner or outer ring of the bearing is fixed when it is not installed on the shaft or the bearing housing, and then the unfixed side moves radially or axially; according to its The state can be divided into four categories: theoretical clearance, working clearance, installation clearance, and effective clearance; among them, the working clearance is the clearance when the bearing is installed on the machine and subjected to a certain load, that is,...

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Problems solved by technology

[0009] 3. Long working time: The weight of 4-row tapered roller bearings for rolls is generally above 30KG, and the height of the detection platform is generally 1.2 meters. With the addition of special calibration plates and sleeve tools, the height is generally 1.5 meters. Due to the sleeve The type tool is a semi-closed structure. It is inconvenient to manually carry the 4-row tapered roller bearings into the sleeve type tool. There are certain safety hazards. It is also inconvenient to use measuring tools. The operation time is long and the efficiency is low. Two people are required to work together;

[0010] 4. Heavy workload for repeated calibration: After the 4-row tapered roller bearing adjustment ring is ground, it is necessary to check whether the working clearance meets the testing requirements, and each set of 4-row tapered roller bearings needs to be re-placed on the sleeve In the type tool, after the adjustment ring (spacer) is placed to detect the actual clearance value, it needs to be reciprocated and disassembled three times, and the labor intensity of repeated operations is high;

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