Device and method for testing friction torque of a bearing under actual working conditions
A technology of friction torque and actual working conditions, which is applied in the field of testing devices for testing friction torque under actual working conditions of bearings, can solve problems such as insufficient simulation of bearing friction torque, and achieve reliable test results, high precision, and high degree of automation Effect
Inactive Publication Date: 2015-12-30
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0005] In order to solve the technical problem that the existing bearing friction torque testing instrument cannot fully simulate the friction torque of the bearing in the actual working condition, the present invention provides a test device and method for the friction torque of the bearing in the actual working condition
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[0030] like figure 1 As shown, a test device for friction torque under actual working conditions of bearings, including a force measuring system, a pre-tightening force applying device, a timing device, a speed measuring system, a test platform, a data acquisition system and a processing device,
[0031] The test platform includes an air flotation platform 4 and a rotating device fixedly connected to the air flotation platform 4. The speed measuring system and the timing device 13 are located on the air flotation platform 4, and the pre-tightening force applying device is fixed on the air flotation platform. The bearing is installed in the pre-tightening force applying device, the test end of the force measuring system acts on the pre-tightening force applying device, and the test result output end of the force measuring system is connected with the data acquisition system and the processing device.
[0032] The force measuring system includes a column and a piezoelectric sens...
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The invention relates to a device and a method for testing friction torque of a bearing under actual working conditions. The testing device comprises a force measuring system, a pretightening force applying device, a timing system device, a velocity measuring system, a test platform, a data acquisition system and a processing device, wherein the test platform comprises a flotation platform and a rotating device which is fixedly connected with the flotation platform; the velocity measuring system and the timing system device are both located on the flotation platform surface; the pretightening force applying device is fixed on the flotation platform surface; the tested bearing is installed in the pretightening force applying device; a test end of the force measuring system acts on the pretightening force applying device; a test result output end of the force measuring system is connected with the data acquisition system and the processing device. The device and the method for the testing friction torque solve the technical problem that the conventional bearing friction torque test instrument cannot sufficiently simulate the friction torque of the bearing under the actual working conditions. By virtue of the characteristics of the micro friction torque of the flotation platform, the friction torque of the bearing under the actual working conditions (different pretightening forces) can be tested.
Description
technical field [0001] The invention relates to a testing device and method for testing the friction torque of a bearing under actual working conditions. Background technique [0002] Generally, the friction torque of the bearing includes viscous torque, hysteresis torque and variable torque. The viscous moment is caused by the elasticity of the material and the viscosity of the lubricant; the hysteresis moment is caused by the elastic hysteresis of the material; the variable moment is affected by various factors (such as load, speed, process error, lubrication and service conditions, etc.). Since the friction torque is affected by many factors, it is almost impossible to obtain the calculation formula of the friction torque through theoretical derivation. Only by testing and measuring the friction torque of bearings under different conditions can an empirical formula of friction torque be established for precise tracking. The control provides an effective error compensatio...
Claims
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IPC IPC(8): G01L5/00
Inventor 黄静刘朝晖谢友金李治国王振宇
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI