Installation error is one of the most prominent factors affecting the lubrication of face gear. To analyze the lubrication performance of the face gear with installation errors, the installation error model of the orthogonal face gear transmission system is established. Then, the contact path, equivalent curvature radius, load distribution and entrainment velocity are studied using the face gear loaded tooth contact analysis (LTCA). On this basis, the lubrication governing equations of the face gear are established according to the elastohydrodynamic lubrication (EHL) theory. In addition, the oil film thickness, oil film pressure and coefficient of friction in the process of face gear drives are calculated using the method of progressive mesh densification (PMD). Finally, the effects of axis intersection angle error, axis intersection error and axial displacement error on lubrication characteristics are analyzed. The results reveal that when the axial intersection angle error and axial displacement error are negative and the axial intersection error is positive, the minimum oil film thickness of the face gear tooth surface is less than that without error. When the error values are the same, the minimum oil film thickness and coefficient of friction have larger changes with the axial displacement error than with the axis intersection error, and the contact path has a bigger movement range.

中文翻译：

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具有安装误差的正交端面齿轮弹流润滑建模与分析

安装误差是影响端面齿轮润滑的最突出因素之一。为了分析具有安装误差的端面齿轮的润滑性能，建立了正交端面齿轮传动系统的安装误差模型。然后，使用端面齿轮加载齿接触分析（LTCA）研究接触路径、等效曲率半径、载荷分布和夹带速度。在此基础上，根据弹流润滑（EHL）理论建立了端面齿轮的润滑控制方程。此外，采用渐进网格致密化（PMD）方法计算了端面齿轮传动过程中的油膜厚度、油膜压力和摩擦系数。最后分析了轴线交叉角误差、轴线交叉误差和轴向位移误差对润滑特性的影响。结果表明，当轴向交叉角误差和轴向位移误差为负值、轴向交叉误差为正值时，端面齿轮齿面最小油膜厚度小于无误差时。当误差值相同时，最小油膜厚度和摩擦系数随轴向位移误差的变化大于随轴线相交误差的变化，接触路径具有更大的运动范围。