This paper presents a study to investigate the effects of the shape of rollers in high precision enveloping speed reducer on the reducer’s lubrication performance. Theoretical models for the precision speed reducer with cylindrical and conical rollers as its transmission components were constructed at first based on the meshing theory. Next, numerical analysis was conducted investigate the lubrication status of the speed reducers with different types of rollers at four rotation speeds using ParticleWorks. The moving particle semi-implicit method embedded in that software was used to model the reducers and the inside lubricant flow. A sequence of tests was performed to inspect the transmission efficiency of the reducers at four different rotation speeds. Experimental data were compared to the simulation predictions. Comparisons showed that the data measured from the experiments matched the simulation results very well. Both experimental and computational results confirmed that the lubrication performance of the enveloping speed reducer with conical rollers is better than that of the speed reducer with cylindrical rollers. It has also been proven that the method of using the churning power losses to assess the effects of the shape of the rollers on the roller enveloping speed reducer’s lubrication behavior is highly reliable.

本文提出了一项研究，以研究高精度包络减速器中辊子的形状对减速器润滑性能的影响。首先基于啮合理论，建立了以圆柱滚子和圆锥滚子为传动部件的精密减速机的理论模型。接下来，使用ParticleWorks对在四种转速下不同类型的辊子的减速器的润滑状况进行了数值分析。该软件中嵌入的移动粒子半隐式方法用于对减速器和内部润滑剂流进行建模。进行了一系列测试以检查减速器在四种不同转速下的传动效率。实验数据与模拟预测进行了比较。比较表明，从实验中测得的数据与模拟结果非常吻合。实验和计算结果均证实，圆锥滚子式减速器的润滑性能优于圆柱滚子式减速器的润滑性能。还已经证明，使用搅动功率损失来评估辊的形状对辊包络减速器的润滑性能的影响的方法是高度可靠的。