圆柱滚子轴承V形兜孔形面的磨损性能

Wear performance of geometric parameters of V-shape pocket of cylindrical roller bearing

为研究高速轻载工况下兜孔形面几何参数对V形兜孔圆柱滚子轴承保持架磨损性能的影响,建立了考虑兜孔处润滑影响的轴承动力学模型。以基于Masjedi磨损模型的时间平均磨损率作为磨损性能的评价标准,研究了兜孔形面几何参数对V形兜孔保持架磨损性能的影响规律,分析了在不同转速下兜孔壁倾角均为15°的V形兜孔保持架的磨损性能及打滑特性。结果表明:兜孔形面几何参数对保持架的磨损性能影响显著,通过对其优化可有效提升保持架的磨损性能;保持架的时间平均磨损率随内圈转速的增加而上升;在内圈转速的范围为5000~20000 r/min时,兜孔壁倾角均为15°的V形兜孔保持架的时间平均磨损率和打滑率均低于普通直兜孔轴承。

To study the influence of geometrical parameters of pocket on the wear performance of Vshaped pocket cage of cylindrical roller bearing under high rotational speed and light load conditions,a bearing dynamic model considering the influence of lubrication at pocket was established.Based on the time-averaged wear rate of Masjedi wear model,the influence of geometric parameters of pocket on the wear performance of V-shaped pocket cage was studied.In addition,the wear and slip performances of Vshaped pocket cage with 15°inclination angle at different rotational speeds were analyzed.The results showed that the geometrical parameters of the pocket had remarkable effect on the wear performance of the cage,and the wear performance of the cage can be effectively raised by optimizing the geometrical parameters of the pocket.The time-averaged wear rate of cage increased with the inner ring rotational speed.When the inner ring rotational speed ranged from 5000 r/min to 20000 r/min,the time-averaged wear rate and slip rate of V-shaped pocket cage with 15°inclination angle were lower than those of ordinary straight pocket bearings.