摘要
利用轴向有限长雷诺方程推导了油膜承载能力表达式 ,结合行星轮的受力分析 ,建立了包含偏心率和半径间隙的力平衡方程。在分析各种误差的基础上 ,推导出综合当量误差和油膜变形量的位移平衡方程。利用上述两方程联立求解偏心率和半径间隙。同时 ,利用表面粗糙度概念建立最小油膜厚度判别式 ,为修正宽径比和选择合理的润滑油动力粘度提供依据。结合已知型号的NBF行星减速器作厚油膜均载设计计算 ,其结果符合工程实际要求。
The expression of load-bearing capacity of oil film was derived by the use of axial finite length Reynold's equation.Combining with force-bearing analysis of planet gears,the force equilibrium equation containing eccentricity and radius clearance was established.On the basis of analyzing various kinds of errors,the equilibrium equation of displacement for synthetical equivalent error and amount of oil film deformation was derived.The eccentricity and radius clearance were solved by the use of apposition of the above stated two equations.In the meantime,to set up the discriminant of minimum oil film thickness by utilizing the concept of surface roughness,thus provided basis for modifying the width-diameter ratio and selecting the reasonable dynamic viscosity of lubricant.Even loading design and calculation of thick oil film is made integrated with the known typed NBF planet reducer and its result conforms to the demamd of engineering practice.Therefore,this method is proved to be feasible.
出处
《机械设计》
CSCD
北大核心
2002年第9期19-22,共4页
Journal of Machine Design
关键词
行星齿轮
均载机构
偏心率
半径间隙
最小油膜厚度
Planet gear,Even loading mechanism,Eccentricity,Radius gap,Minimum oil film thickness
