对称弧形齿线圆柱齿轮的真实齿面接触分析研究

针对传统的齿面接触分析(TCA)方法在分析宽度较大的重载齿轮时误差较大的缺点,提出了一种基于全齿面整个啮合过程的真实齿面接触分析新方法.通过建立检验真实齿面的干涉判据,利用一系列连续变化的柱面去截取啮合齿面,得到一族瞬时接触线,从而可对整个啮合过程的齿面接触情况进行分析.用此法对弧形齿线圆柱齿轮进行了实例分析,分析结果表明此方法是正确可行的.与传统的TCA方法相比,该方法不仅能更确切地反映真实齿面的实际接触斑点,还能直观地判断是否发生齿面干涉.

Real Tooth Contact Analysis of the Cylindrical Gears with Symmetrical Arcuate Tooth Trace

The traditional tooth contact analysis (TCA) method can not exactly reflect the actual tooth contact conditions, especially for heavy duty gears with a wide width. To solve the problem, a new real tooth contact analysis (RTCA) method is presented, which is based on the whole tooth surface analyzing in the meshing process. An interference criterion identifying actual tooth surface is founded. Then a set of instantaneous contact curves are calculated via intersecting the messing tooth surfaces by a series of varying cylindrical surfaces, so the actual contact status of messing tooth surfaces can be analyzed. The contact tooth surface of the cylindrical gear with symmetrical arcuate tooth trace is analyzed with this method, and the results are compared with those got with the traditional TCA method. This method can exactly reflect the actual contact field of messing tooth surfaces, and intuitively identify if there is the interference or not.