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综合考虑了轮齿接触几何、啮合点法向载荷、齿向参数、真实表面粗糙度、润滑剂流变特性等因素,建立了滤波减速器轮齿混合润滑数值分析模型,采用复合迭代法和快速傅里叶变换(FFT)方法分别求解Reynolds方程和弹性变形方程,获得了轮齿接触表面混合润滑分析完全数值解,得到了滤波减速器在啮入点、节点和啮出点的压力与平均油膜厚度,以及转速对轮齿接触表面平均油膜厚度和接触比的影响.结果表明:在啮入点、啮出点及节点处,沿齿宽方向的压力分布不相等,两侧压力较大,而在啮入点处的两侧压力突变相对较小,且平均油膜厚度最大;对于粗糙轮齿接触表面,随着滤波减速器转速逐渐降低,啮入点、节点及啮出点的平均油膜厚度随之减小,接触比增加,润滑效果变差,并且在同一工况下粗糙轮齿接触表面的啮合点平均油膜厚度小于光滑轮齿表面的平均油膜厚度.
Considering the contact geometry of gear tooth, the normal load of meshing point, the tooth orientation parameter, the real surface roughness and the rheological properties of lubricant, the numerical analysis model of gear-teeth lubrication of filter reducer was established. The compound iteration method and fast Fourier transform (FFT) method were used to solve the Reynolds equation and the elastic deformation equation separately. The complete numerical solution of the mixed lubrication analysis of gear contact surfaces was obtained. The pressure drop of the filter reducer at the meshing point, Thickness and rotation speed on the contact surface of gear teeth.The results show that the pressure distribution along the tooth width direction is not equal and the pressures on both sides are greater at the point of insertion, The pressure drop on both sides of the meshing point is relatively small, and the average film thickness is the largest. For the contact surface of the coarse gear teeth, the average oil film thickness at the meshing point, node and out-point decreases with the decreasing speed of the filter retarder The contact ratio increases, the lubrication effect becomes worse, and the average oil film thickness at the contact point of the rough gear tooth contact surface under the same working condition is smaller than the average oil film thickness on the smooth gear tooth surface.