Method and device for measuring actual static frictional torque of rolling bearing

Abstract

The invention discloses a method and a device for measuring actual static frictional torque of a rolling bearing. The method is that a transmission shaft is mounted into an inner ring hole in the measured rolling bearing, and the measured rolling bearing is synchronously fixed into a bearing hole in a supporting seat; a counterweight plate and a rotating plate are respectively fixed to two ends of the transmission shaft, wherein the radius of the outer circle of the rotating plate is R; a lifting line coils the rotating plate; a supporting plate is suspended at one end of the lifting line; the acting torque of the supporting plate applied to the rotating plate through the lifting line is less than the actual static frictional torque M of the measured rolling bearing, so that the rotating plate is static, and fine iron sand is gradually added to the supporting plate; when the rotating plate starts to rotate, the fine iron sand is stopped adding, the sum of the weight of the supporting plate and the added fine iron sand is W, and thus the actual static frictional torque M of the measured rolling bearing is M=W*R. The method and the device have the advantages of being simple in structure, small in cost, convenient to operate, relatively high in measurement precision, and particularly suitable for large, medium and small scale enterprises and labs.

Description

technical field [0001] The invention relates to a method and a device for measuring the actual static friction torque of a rolling bearing, and belongs to the technical field of static friction torque measurement of rolling bearings. Background technique [0002] At present, hand-pulled spring scales or special rolling bearing static friction force measuring instruments are commonly used to measure the static friction torque of rolling bearings. When using a hand-pulled spring scale to measure the static friction torque of rolling bearings, the force angle and pulling force of the rolling bearing to be tested are difficult to control, and the measurement results have large errors; Using special instruments to measure rolling bearing static friction torque, although the measurement accuracy can be guaranteed, but the special rolling bearing static friction torque measuring instrument must be equipped with automatic data acquisition system, advanced data processing system, mea...

AI Technical Summary

Problems solved by technology

[0002] At present, hand-pulled spring scales or special rolling bearing static friction force measuring instruments are commonly used to measure the static friction torque of rolling bearings. When using a hand-pulled spring scale to measure the static friction torque of rolling bearings, the force angle and pulling force of the rolling bearing to be tested are difficult to control, and the measurement results have large errors; Using special instruments to measure rolling bearing static friction torque, although the measurement accuracy can be guaranteed, but the special rolling bearing static friction torque measuring instrument must be equipped with automatic data acquisition system, advanced data processing system, measurement result display system and output function equipment, due to this special rolling bearing The production cost and usage cost of the static friction torque measuring instrument are relatively high, so it is not suitable for use by small and medium-sized enterprises, especially when the special rolling bearing static friction torque measuring instrument is used, the operator is required to have a high level of operation, which greatly limits this. Popularization and Application of a Measuring Instrument

Therefore, the existing measurement methods for the actual static friction torque of rolling bearings are still not ideal enough to meet the needs of actual production.

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