渐开线圆柱齿轮出现节点外啮合的研究

Study of involutes cylinclrical gear-pair's emerging node external gearing

首先分析了节点外啮合出现的原因;其次根据节点外啮合的条件,推出了变位齿轮节点外啮合时各参数之间的关系;最后分析了标准齿轮外啮合传动不存在节点外啮合,总结了节点外啮合对齿轮强度的影响。

First, this paper analyses the engagement field of involutes transmission, pointing out the cause of node external gearing. Based on the judged conditions about node external gearing, it calculates the connection with kind＇s parameter when gears with addendum modification appear node external gearing. It an- alyses that standard gear external gearing do not have node external gearing, and that standard gear internal gearing all have it. Finally the paper sums up the influence on gear＇s intension as node external gearing.