Wire high-frequency fatigue test device
A fatigue test, high-frequency technology, applied in the direction of measuring devices, testing dielectric strength, using applied repetitive force/pulsation force to test material strength, etc., can solve the problem of large differences in application conditions, accelerated fatigue test, and can not fully reflect fatigue performance and other problems to achieve the effect of reducing the risk of the test and working stably
Active Publication Date: 2013-06-26
NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
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Problems solved by technology
[0002] In linear high-frequency oscillating motors and servo motors, the wires of the motor are often in high-frequency and low-amplitude vibrations. The conventional bending resistance of the wires is tested by conducting a 90° bending test with a heavy object. This test method The device cannot fully reflect the fatigue performance under high frequency and low amplitude application conditions, and at the same time, it is quite different from the actual application conditions. The test data cannot evaluate the long-term reliability of the conductor under high frequency and low amplitude conditions. Conductor fatigue test under low-frequency and low-amplitude working conditions, and the amplitude and frequency can be adjusted according to actual usage conditions, and the same stress fatigue test or accelerated fatigue test can be performed on the conductor
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[0029] like figure 1 A wire high-frequency fatigue test device is shown, the device includes: installation tube 1, plate spring 1 2, plate spring 2 11, compression ring 1 3, compression ring 2 12, small clamping seat 1 6, Small wire holder 2 13, small wire holder connector 5, coupling frame 9, linear motor 10, transmission shaft 16, large wire holder 1 4, large wire holder 2 14, gasket 1 7, gasket 2 15;
[0030] Wherein the installation cylinder 1 is a hollow dumbbell-shaped structure, and the two ends and the middle part are cavities; the dumbbell cavity at the front of the installation cylinder 1 is provided with inner protrusions A, B, and C successively from the inside to the outside, and the dumbbell cavity at the rear of the installation cylinder 1 is hollow. The cavity is provided with inner protrusions D, A', B', C' sequentially from the inside to the outside;
[0031] The plate spring one 2 is installed on the front end of the installation cylinder 1, and the plate s...
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The invention relates to a wire high-frequency fatigue test device and belongs to the field of reliability evaluation. The device provided by the invention contains an installation cylinder, a first plate spring, a second plate spring, a first hold-down ring, a second hold-down ring, a first small thread jamming seat, a second small thread jamming seat, a combination rack, a linear motor, a transmission shaft, a first big thread jamming seat, a second big thread jamming seat, a first pad and a second pad. The device is driven by the linear motor and can simulate wire high-frequency low-amplitude motion status. The motion portion is supported by the plate springs, thus guaranteeing stable operation of a moving part. By the adoption of the device, the high-frequency fatigue test on 12 wirescan be simultaneously carried out and the test risk can be reduced. In the meanwhile, by the adoption of the adjustable hold-down rings and gaskets, the test device can be equipped with different linear motors. Frequency and vibration amplitude of the test can be adjusted with the variation of input voltage and frequency.
Description
technical field [0001] The invention relates to a high-frequency fatigue test device for wires, which belongs to the field of reliability evaluation. Background technique [0002] In linear high-frequency oscillating motors and servo motors, the wires of the motor are often in high-frequency and low-amplitude vibrations. The conventional bending resistance of the wires is tested by conducting a 90° bending test with a heavy object. This test method The device cannot fully reflect the fatigue performance under high frequency and low amplitude application conditions, and at the same time, it is quite different from the actual application conditions. The test data cannot evaluate the long-term reliability of the conductor under high frequency and low amplitude conditions. Conductor fatigue test under low-frequency and low-amplitude working conditions, and can adjust the amplitude and frequency according to the actual use, and conduct the same stress fatigue test or accelerated ...
Claims
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IPC IPC(8): G01N3/38G01R31/02G01R31/12
Inventor 霍英杰王田刚许国太
Owner NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH