Fatigue life evaluating device for flexible gears

Abstract

The invention discloses a fatigue life evaluating device for flexible gears. The fatigue life evaluating device comprises a mechanism bottom plate and a transmission shaft arranged horizontally and used for mounting a tested flexible gear. A fixing support, a loading device, a driving device, a magnetic powder brake, a torque sensor and a speed increaser are mounted on the mechanism bottom plate, the fixing support is used for fixing the flexible gear and mounting the transmission shaft, the loading device is fittingly installed with the fixing support and is used for loading the tested flexible gear, components of the driving device are sequentially and fittingly connected to the tested flexible gear, and the magnetic powder brake, the torque sensor and the speed increaser are installed according to the preset requirement on coaxiality and are sequentially and fittingly connected to the tested flexible gear. The driving device and the loading device are fittingly installed according to the preset requirement on coaxiality, and the loading device and the speed increaser are fittingly installed according to the preset requirement on parallelism and the preset requirement on a meshing clearance of gears. The fatigue life evaluating device for flexible gears can overcome shortcomings that an operation process is complicated, time and labor are wasted, cost is high, testing effects are unsatisfactory, and the like in the prior art. Besides, the fatigue life evaluating device has the advantages of simplicity and convenience in operation process, capability of saving time and labor, low cost and perfect testing effect.

Description

Technical field [0001] The invention relates to the technical field of test evaluation equipment for a general-purpose harmonic reducer, and in particular to a flexspline fatigue life evaluation device. Background technique [0002] Harmonic reducer is widely used in aviation and aerospace vehicle mechanical products. Its main failure modes are the fatigue fracture of the flexible wheel and the wear failure of the transmission components of the harmonic reducer. [0003] The traditional flexspline fatigue life evaluation technology needs to be carried out by loading and running-in the entire harmonic reducer. The failure result is often that the harmonic reducer bearings and other moving parts have been damaged before the flexspline fatigue fracture. Testing the fatigue life of the flexspline consumes a lot of resources and energy. Therefore, it is of great significance to design a separate device for evaluating the fatigue life of the flexspline. [0004] In the process of implemen...

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Problems solved by technology

[0003] The traditional flexspline fatigue life evaluation technology needs to be carried out by loading and running the entire harmonic reducer. The failure result is often that the moving parts of the harmonic reducer have been damaged before the flexspline fatigue fractures, and it is impossible to separately It takes a lot of resources and energy to test the fatigue life of flexsplines. Therefore, it is of great significance to design a device for evaluating the fatigue life of flexsplines alone.

[0004] In the process of realizing the present invention, the inventor found that there are at least defects such as complicated operation process, time-consuming and laborious, high cost and unsatisfactory test results in the prior art

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