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建立了渐开线斜齿轮啮合的弹流润滑计算模型,将斜齿圆柱齿轮啮合的齿面接触等效为有限长线接触的弹流润滑问题.考虑斜齿轮啮合的实际因素,将斜齿轮啮合过程中的等效曲率半径和齿面载荷的变化反映到弹流润滑计算模型中,应用统一Reynolds方程方法求得轮齿在1个完整啮合周期内的瞬时弹流润滑数值解.结果表明:斜齿轮啮合线上各点处的膜厚、压力均有较大不同,各接触点处的油膜厚度受综合曲率半径的影响较大;斜齿轮传动非稳态效应相对较弱;小齿轮齿根附近和节点位置处润滑状态较差;适当增大压力角可以改善齿轮的润滑.
The calculation model of involute helical gear meshing is established, and the tooth surface contact of helical cylindrical gear is equivalent to the problem of the elastohydrodynamic lubrication of finite long-line contact.Considering the actual factors of helical gear meshing, The equivalent radius of curvature and the change of tooth surface load are reflected in the model of the elastohydrodynamic lubrication, and the numerical solution of the instantaneous elastohydrodynamic lubrication of the tooth during a complete meshing cycle is obtained by using the uniform Reynolds equation. The results show that the helical gear The film thicknesses and pressures are different at each point on the meshing line, the thickness of the oil film at each contact point is greatly affected by the integrated radius of curvature; the unsteady effect of bevel gear transmission is relatively weak; Lubrication at the node location is poor; appropriately increasing the pressure angle can improve gear lubrication.