基于弹流润滑理论的斜齿圆柱齿轮油膜厚度影响参数分析

The Influence of Helical Gear Parameters on the Minimum Film Thickness Based on the Elastohydrodynamic Lubrication Theory

基于弹流润滑理论,利用计算机仿真计算方法,分析了斜齿圆柱齿轮齿间最小油膜厚度沿啮合区间的变化规律,分别在传动比变化和不变2种情况下研究了齿轮参数对齿间节点处油膜厚度的影响规律。结果表明,当传动比变化时,油膜厚度随齿轮传动法向模数的增加而增加,随有效齿宽、螺旋角和法向压力角等齿轮参数的增加而减小;当传动比不变时,随齿轮参数的增加,油膜厚度增加。

Based on elastohydrodynamic lubrication theory （EHL）, the variety rule of the oil-film thickness of the helical cylindrical gear in meshing process was analyzed by using the computer simulation calculated method. The influence of the parameters of gears on the node oil-film thickness between gears was studied. The results indicate that the oil-film thickness increases with the increase of normal modulus and it decreases with the increase of gear width, helix angle and normal pressure angle while the transmission ratio changes. The oil-film thickness increases with the increase of normal modulus, gear width, helix angle and normal pressure angle while the transmission ratio is fixed.