精密滚珠丝杠副精度失效机理及加工工艺特性研究

项目名称： 精密滚珠丝杠副精度失效机理及加工工艺特性研究

项目编号： No.51275244

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 陶卫军

作者单位： 南京理工大学

项目金额： 80万元

中文摘要： 针对国产精密滚珠丝杠副急需解决的精度保持性这一共性技术问题，开展精度失效机理及加工工艺特性的基础研究。研究滚珠丝杠副传动过程中滚珠与滚道的相对运动特性与力学作用机制，考虑润滑状况与滚道加工误差的影响建立系统完整的精密滚珠丝杠副运动学与系统动力学模型；结合实验和微-细观分析方法，探索精密滚珠丝杠副在使用过程中的精度失效机理，建立滚珠与滚道接触变形、摩擦磨损和表面点蚀的数学模型，研究不同工作条件（包括载荷大小、预紧力大小、润滑条件与进给速度）下其精度退化的规律，提出面向精密滚珠丝杠副的精度保持性预测方法；分别研究滚珠丝杠副加工工艺对滚道表面特性、滚道表面特性对精度保持性的影响规律，建立滚珠丝杠副加工工艺与精度保持性的关系模型，开发精密滚珠丝杠副加工工艺优化数据库。项目成果能为精密滚珠丝杠副精度保持性主动设计、材料与加工工艺优化提供理论支撑，对解决国产精密滚珠丝杠副精度保持性问题具有重要价值。

中文关键词： 精密滚珠丝杠副；精度保持性；精度损失模型；精度保持性试验；预测方法

英文摘要： Aiming at the common problem of precision retaining ability for domestic precision ball screw pair, the fundamental researches on the precision failure mechanism and processing technology characteristics of precision ball screw pair are developed. The relative movement characteristic and the mechanical mechanism between the balls and grooves will be studied and the kinematics and system dynamics of precision ball screw pair considering the influence of lubrication conditions and the grooves' machining error. Combining the experiments with the micro-mesoscopic analytical method, we will explore the precision failure mechanism of precision ball screw pair in use by establishing the mathematical models of elastic contact deformation，friction-wear and surface pitting and studying the precision degradation law under the different operating conditions such as the load, lubrication conditions, preload and feed velocity, and propose a forecast method for the precision retaining ability of precision ball screw pair. Moreover, we will investigate the influence of the processing technology of ball screw pair on the groove surface characteristics and the groove surface characteristics on the precision retaining ability of precision ball screw pair, built the relational model of the processing technology and precision retain

英文关键词： Precision ball screw pair；Precision preserve；Precision loss model；Precision preserve test；prediction method