多轴承支承主轴系统轴承磨损研究  

BEARING WEAR ANALYSIS IN MULTI-BEARING SPINDLE SYSTEM

作　　者：张宇 付雪艳 李爽 李颂华[1,3] ZHANG Yu;FU XueYan;LI Shuang;LI SongHua(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Wafangdian Bearing Group Special Precision Bearing Co.,Ltd.,Dalian 116399,China;National-Local Joint Engineering Laboratory of NC Machining Equipment and Technology of High-Grade Stone,Shenyang 110168,China)

机构地区：[1]沈阳建筑大学机械工程学院,沈阳110168 [2]瓦房店轴承集团特种精密轴承有限责任公司,大连116399 [3]沈阳建筑大学高档石材数控加工装备与技术国家地方联合工程实验室,沈阳110168

出　　处：《机械强度》2021年第6期1393-1401,共9页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(51975388,51675353);辽宁省自然科学基金项目(20170540739,2019-MS-266)资助。

摘　　要：为了明晰不同工况参数对主轴系统中轴承磨损的影响规律,定量各参数对轴承磨损的影响程度,开展了多轴承支承的主轴系统轴承磨损研究。首先介绍了考虑润滑状态的磨损系数计算方法,推导了角接触球轴承磨损深度计算模型,其次,基于系统模型获得的轴承滚动体的运动参数与接触参数计算了轴承内外滚道的磨损深度,最后,讨论了主轴转速、轴承安装角偏移、外载荷和轴承表面粗糙度对轴承磨损的影响。结果表明,主轴转速对轴承磨损影响显著,转速改变导致了轴承磨损规律的较大差异,轴承不存在安装角偏移时,主轴系统中各轴承内外滚道磨损深度之和最小,外载荷的变化对轴承磨损影响微弱,表面粗糙度的增大能够显著增大轴承的磨损深度。In order to clarify the effects of different working condition parameters and quantify their influence degree on bearing wear in the spindle system, the bearing wear in the spindle system supported by multi-bearing was carried out. Firstly, the calculation method of wear coefficient considering the lubrication state is introduced, and the wear depth model of the angular contact ball bearing is deduced. Second, the wear depth of the inner and outer raceways of the bearing is calculated based on the motion parameters and contact parameters of the bearing rolling elements obtained from the system model. The influences of spindle speed, bearing angular misalignment caused by mounting error, external loads and bearing surface roughness on bearing wear are discussed. The results show that the spindle speed has a significant impact on bearing wear, and the change of spindle speed leads to a great difference of bearing wear law. Without bearing angular misalignment, the sum of the wear depth of the inner and outer raceways of each bearing in the spindle system is the smallest. The change of external loads has little effect on bearing wear, but the increase in surface roughness can significantly increase the wear depth of the bearing.

关 键 词：主轴系统 角接触球轴承 磨损系数 磨损深度 角偏移 

分 类 号：TH133[机械工程—机械制造及自动化]