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在齿轮传动中,为了获得较大的承载能力和较好的齿面耐磨性,齿轮一般经过渗炭淬火,使其齿面硬度达到Rc60左右;同时还要保证齿轮有足够的精度。但是,很难避免淬硬齿轮的热处理变形和在热处理后重新加工基面带来的误差。这些误差就是齿轮的齿向、齿形、周节等发生扭曲和偏移。所以齿轮在渗炭淬火后,为了提高淬硬齿轮的精度,还必须进行精加工。通常对7级或8级精度淬硬齿轮的精加工方法是磨齿,但磨齿效率低、成本高、经济效益差。近年来,成都工具研究所参考了国外技术
In the gear transmission, in order to obtain a larger bearing capacity and better wear resistance of the tooth surface, the gear is generally carburized and hardened to a tooth surface hardness of Rc60 or so, and at the same time, the gear should be of sufficient precision. However, it is difficult to avoid the heat treatment distortion of the hardened gear and the error caused by reworking the base surface after the heat treatment. These errors are the gear tooth, tooth shape, perimeter, etc. twist and offset. Therefore, the gear hardening charcoal, in order to improve the accuracy of hardened gears, but also must be finishing. Usually on the 7 or 8 precision hardened gear finishing method is grinding, but grinding low efficiency, high cost, poor economic efficiency. In recent years, Chengdu Tool Research Institute reference to foreign technology