Double-torsion-spring fatigue test device and test method thereof

Abstract

The invention discloses a double-torsion-spring fatigue test device and a test method thereof. The double-torsion-spring fatigue test device comprises a test bed, a first torsion unit, a second torsion unit, a double-torsion-spring test piece, a test piece support, a first fixing pin, a second fixing pin and a third fixing pin, wherein the double-torsion-spring test piece comprises first to third connecting rings and first to second torsion springs; the first torsion unit and the second torsion unit each comprise a servo motor, a planetary reducer, a reducer connector, a torsion sensor, a torsion spring connector, a motor support and a photoelectric sensor. During working, a total test period and a time-varying curve of a torsion angle of a double-torsion-spring test piece in a single period are set for the servo motors of the first torsion unit and the second torsion unit, then a test is carried out, and after the test is completed, a time-varying curve of a rotation angle and a torque of two ends of the double-torsion spring is exported. The fatigue condition of the double torsion springs under the action of the periodic load is simulated in a laboratory.

Description

technical field [0001] The invention relates to the technical field of spring fatigue tests, in particular to a double torsion spring fatigue test device and a test method thereof. Background technique [0002] Torsion spring, referred to as torsion spring, is a mechanical part that uses elasticity to work. It can control the movement of parts and play the role of energy storage and buffering. It is widely used in home appliances, instruments, automobile manufacturing and aerospace industries. Since the torsion spring is subject to random loads during use, it may fail under long-term alternating loads. The failure of torsion springs is generally caused by fatigue, so it is particularly important to perform fatigue tests on torsion springs. [0003] At present, domestic research on double torsion spring fatigue test device is relatively small, and foreign research content is more extensive, but the public content is less. Therefore, further experimental simulation studies ...

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Problems solved by technology

[0003] At present, domestic research on double torsion spring fatigue test equipment is relativ

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