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在齿轮传动中,轮齿折断是一种主要的失效形式,研究提高齿轮的抗弯强度,对于延长齿轮的使用寿命有着重要的意义。为了检验和改进轮齿的抗弯强度,就必须对齿轮传动进行轮齿弯曲强度方面的试验研究。轮齿弯曲强度试验装置可分为弯曲静强度试验装置,弯曲冲击强度试验装置和弯曲疲劳强度试验装置。由于运转的轮齿都是受变载荷作用,所以弯曲疲劳试验是最主要的。轮齿以受脉动循环变化应力即单向循环弯曲为最常见,所以在疲劳试验中又以单向的弯曲疲劳试
In the gear transmission, gear breakage is a major form of failure, research to improve the bending strength of the gear, to extend the service life of the gear is of great significance. In order to test and improve the flexural strength of gear teeth, it is necessary to test the gear transmission flexural strength. Teeth bending strength test device can be divided into bending static strength test device, bending impact strength test device and bending fatigue strength test device. Bending fatigue test is the most important because the running gear teeth are subject to varying load. Gear teeth to change by the pulsating cycle stress that is one-way loop bending is the most common, so in the fatigue test and unidirectional bending fatigue test