螺旋锥齿轮动态互研的机理与试验

Lapping Mechanism and Experiments of Hypoid Gears

揭示了螺旋锥齿轮动态互研、误差均化的机理。建立了螺旋锥齿轮研齿过程的动力学模型,求出了动态研磨力的大小。动态研磨力在螺旋锥齿轮研磨中起着切削与均化误差的作用,研齿材料移除首先发生在齿面尖点、高点与齿对转换点,从而使齿面光滑滚动特性得到改善,齿对转换趋于平稳。对齿轮副研磨前后轮齿精度与动态啮合性能进行了对比试验,结果表明,研磨后轮齿齿形与齿距精度有所提高,动态性能明显改善。

The dynamic mechanism of tooth surfaces corrected mutually and error average in lapping operation of hypoid gears were firstly proposed and investigated. The dynamic model of the lapping was setup, and the dynamic lapping force was calculated. The dynamic lapping force takes an important role of removing materials and eliminating errors in lapping operation of the gears. The removal of material takes firstly place at the instant of impact of the peak point of surface and the changeover point between teeth during lapping, thus the rolling, the sliding and changeover between teeth tend to smoothness. The experimental comparison of the tooth precision and the dynamic mesh performance before and after lapping had been carried out. The results show that the lapping operation may reduce the tooth shape and pitch variation to some extent and improve the dynamic mesh performance of gears greatly.