Method for testing service life of rolling bearings

Abstract

The invention discloses a method for testing the service life of rolling bearings, which comprises: mounting two rolling bearings to be tested on one optic axis and rotationally supporting the optic axis by using a bearing block on which a supporting bearing is arranged; driving the optic axis to rotate at a constant rotation speed by using a power transmission device; applying a pair of loads which are the same in size and opposite in direction along the radial direction of the optic axis to the bearings to be tested; and recording the failure time of the rolling bearings to be tested and calculating the service life under normal stress level of the tested bearings. According to the technical scheme, the service life of the rolling bearings is tested by applying the loads which are the same in size and opposite in direction along the radial direction of the optic axis to the bearings to be tested, the external forces born by the optic axis in a testing system in the whole test process are almost kept balance, the optic axis hardly bears forces applied by the internal parts of the system, and thus, the operation reliability and service life of the whole test system are improved.

Description

technical field [0001] The invention relates to the field of rolling bearing aging test, which is mainly applicable to the strengthening test and rapid evaluation of rolling bearing life and reliability. Background technique [0002] Life test is one of the important ways of rolling bearing failure mechanism research, life theory research and life and reliability evaluation. As early as the 1940s, countries began to use single-factor environmental simulation development tests and appraisal tests for the design of rolling bearings to test the quality and reliability of bearing design. In the 1970s, comprehensive environmental simulation reliability tests, task profile tests and acceptance simulation tests were adopted. For a long time thereafter, these test methods became the main means to ensure the reliability of rolling bearings. However, due to the complexity of the coupling effect of environmental simulation, the high cost and the hysteresis of the test results, this k...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art that the test system is damaged due to unbalanced local force during the rolling bearing life test and the test process is complicated, and to provide a test system with balanced force during the rolling bearing life test. Simple test method for process safety

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