对角修形窄斜齿轮的弹流数值计算和膜厚测试

The Calculation of EHL of Diagonal Modified Narrow Helical Gears and Film Thickness Measurement

本文从弹流角度分析了修形前后线载荷分布及最大压力沿接触线的变化规律。本文应用Ｎｅｗｔｏｎ—Ｒａｐｈｓｏｎ方法与Ｎｅｗｔｏｎ下山法相结合的办法，在假定刚体中心膜厚相等的前提下，首先求出了修形前斜齿轮某一时刻全接触线上的弹流润滑解。进而求解出修形后斜齿轮某时刻全部接触线各点的载荷分配、压力分布和油膜形状。在文献［４］的基础上，研制了一套微机数据采集和处理系统，测量了斜齿轮的中心油膜厚度，测量结果与计算结果基本一致。

In this paper, the varying rules of the linear load distribution and the largest stress along the contacting lines are analyzed based on the EHL theory. Applying the method of Newton-Raphson and Newton dowm-hill together, under the assumption of the equal rigid central film thickness, the numerical resolutions along all contacting lines at a time are gained about the helical gears before modification. Based on this, the load and pressure distribution and film thickness of each point along all the contacting lines at a time about the modified belical gears are calculated.On the basis of the laser transmission thohnology used in the reference[4], a sst of data collecting and processing system with a computer was researched. The central film thickness of the helical gears were measured. The measuring results are basically identical to the calculating ones. These show the reasonability and the reliability of the numerical analyzing model established.