High-precision rolling bearing friction torque testing device and method

Abstract

The invention relates to a high-precision rolling bearing friction torque testing device and method. The invention aims to solve the technical problems that in the prior art, the rolling testing errorof extremely small friction torque is large, the testing stability of the same point is poor, and it is difficult to achieve friction torque testing of multiple points evenly distributed on a rollingbearing, and provides a high-precision rolling bearing friction torque testing device and method. A motor of a power assembly of the device is installed on a rack; a driving wheel is mounted on the motor; the diameter of a driven wheel of a testing assembly is greater than that of the driving wheel; the driven wheel is arranged on the rack and is meshed with the driving wheel; a scale compass isgreater than a fixing ring in diameter; the scale compass is arranged in front of the driven wheel in parallel and is fixed on the rack; the scale compass is provided with a plurality of scale lines and a plurality of fixing ring positioning holes; scale marks are also arranged on the fixing ring; a radial through hole and an axial through hole are formed in the fixing ring. The method is carriedout by using the device.

Description

technical field [0001] The invention relates to a friction torque testing device and method, in particular to a high-precision rolling bearing friction torque testing device and method. Background technique [0002] Rolling bearings are widely used in various mechanical transmission mechanisms, especially in the fields of aviation and aerospace. Among them, the friction torque test of rolling bearings has always been one of the key technologies for precision instrument measurement, especially for micro-small special bearings, which require accurate measurement of the friction torque values ​​of 8 points uniformly distributed in the circumferential direction of rolling bearings, which is very important for the resolution of the friction torque test device. and high stability requirements. [0003] The existing rolling bearing friction torque test system has a huge test error for the rolling test with extremely small friction torque, and sometimes it is even difficult to test...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing rolling bearing friction torque test system has a very small rolling test error for the extremely small friction torque, which is even difficult to test, the system is unstable, the test stability of the same point is poor, and it is difficult to achieve uniform distribution on the rolling bearing The multi-point friction torque test will eventually lead to technical problems that the test results are far from the expected test requirements, and a high-precision rolling bearing friction torque test device and method are provided.

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