人字齿轮对称度的检测分析

摘要

A double-helical gear is a kind of special gear which can be used on large power transmission devices. It can work perfectly in the overload and high speed transmission system. But the special structure requirements of teeth make the machining process difficult. Especially there is a strict requirement on the symmetry between the teeth and the central shaft, and it is difficult to be tested. Based on the analysis of sym-metry for double-helical gears, the main measurement factor was found, and a new test method on CMM was put forward in this article.%人字齿轮是在大型动力传动装置上广泛使用的一种特殊齿轮，十分适合高速、重载传动。但是人字齿轮特殊的结构导致其加工困难，对于两侧齿的要求较高，尤其是对于两侧齿轮齿面与中心截面的对称度要求十分严格，检测难度大。本文通过对人字齿轮的对称度误差要求进行分析，找到了此项误差的主要测量要素，并提出了其在三坐标测量机上的检测新方法。