基于加速退化试验的滚珠丝杠副统计分析

发布时间：2018-03-23 13:26

本文选题：滚珠丝杠副　切入点：加速退化试验　出处：《北京工业大学学报》2017年11期

【摘要】：为有效地获取滚珠丝杠副精度寿命特征,利用滚珠丝杠副磨损特征建立加速退化模型,并且根据设计的试验装置和试验过程的摩擦力矩值变化情况,采用参数估计方法进行退化数据的统计分析,获得不同应力水平下的滚珠丝杠副加速退化参数模型.同时,根据不同应力条件下实测的滚珠丝杠副摩擦力矩退化数据,计算出滚珠丝杠副定位反向变动量,为滚珠丝杠副的定位精度退化提供一种新的评价方法.建立的滚珠丝杠副加速退化模型针对其磨损进程极为缓慢的特性,利用该退化方法能较准确地推算出滚珠丝杠副精度寿命,能节约滚珠丝杠副试验费用、试验时间和指导滚珠丝杠副的设计.
[Abstract]:In order to obtain the precision life characteristics of the ball screw pair effectively, the accelerated degradation model is established by using the wear characteristics of the ball screw pair, and according to the change of the friction torque value of the designed test device and the test process, The parameter estimation method is used to analyze the degradation data, and the accelerated degradation parameter model of ball screw pair under different stress levels is obtained. At the same time, according to the degradation data of friction moment of ball screw pair measured under different stress conditions, In order to provide a new evaluation method for the degradation of the positioning accuracy of the ball screw pair, the reverse change of the ball screw pair is calculated. The accelerated degradation model of the ball screw pair is based on the characteristic that the wear process of the ball screw pair is extremely slow. By using this degenerative method, the precision life of the ball screw pair can be calculated more accurately, and the cost of the ball screw pair test, the test time and the design of the ball screw pair can be saved.
【作者单位】：北京工业大学先进制造技术北京市重点实验室;
【基金】：国家自然科学基金资助项目(51575014,51505012) 北京市自然科学基金资助项目(KZ201410005010,3154029)
【分类号】：TH132

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