精密轴系低温动态摩擦力矩波动分析及优化策略  

Analysis and Optimization Strategy for Dynamic Friction Torque Fluctuation of Precision Shafting Under Low Temperature

作　　者：高飞[1,2] 杨宜鑫 谢鹏飞 夏玉磊[1,2] 张志鹏 GAO Fei;YANG Yixin;XIE Pengfei;XIA Yulei;ZHANG Zhipeng(Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China;Henan Engineering Technology Research Center of Machine Tool Spindle,Luoyang 471039,China)

机构地区：[1]洛阳轴承研究所有限公司,河南洛阳471039 [2]河南省机床主轴工程技术研究中心,河南洛阳471039

出　　处：《轴承》2024年第2期60-65,共6页Bearing

摘　　要：精密轴系作为机械设备旋转支承核心,其动态摩擦力矩及平稳性直接影响整机功耗及运转精度,尤其在低温环境下,由于温度对润滑油黏度、零件尺寸和配合关系的影响,精密轴系更易出现动态摩擦力矩异常波动。针对某精密轴系低温环境下批次性动态摩擦力矩异常波动现象进行了主因素分析,通过ADAMS平台建立仿真模型,分析了引导间隙、兜孔间隙对保持架动态特性的影响。结合拆解数据,指出兜孔间隙不合理引发的兜孔磨损是造成精密轴系动态摩擦力矩异常波动的原因,通过数理统计对保持架参数进行优化,兜孔间隙与引导间隙之比为0.70~0.85时,该精密轴系低温下运转稳定。As the core of rotating support of mechanical equipment,the dynamic friction torque and stability of precision shafting directly affect the power consumption and operating accuracy of whole machine,especially under low temperature environment,due to influence of temperature on viscosity of lubricating oil,size of parts and fit relationship,the dynamic friction torque of the shafting is more likely to fluctuate abnormally.The main factors are analyzed for abnormal fluctuation of batch dynamic friction torque of the shafting under low temperature environment.A simulation model is established by ADAMS,and the influence of guide clearance and pocket clearance on dynamic characteristics of cages is analyzed.Combining with disassembly data,it is pointed out that the pocket wear caused by unreasonable pocket clearance is the reason for abnormal fluctuation of dynamic friction torque of the shafting.The parameters of cages are optimized through mathematical statistics,when the ratio between pocket clearance to guide clearance is 0.70~0.85,the shafting operates stably under low temperature.

关 键 词：滚动轴承 角接触球轴承 保持架 轴系 低温 摩擦力矩 动态性能 

分 类 号：TH133.331[机械工程—机械制造及自动化]