单螺母滚珠丝杠副轴向刚度的分析研究  

Analysis & Study on the Axial Stiffness of Single-nut Ball Screw Pairs

作　　者：许向荣[1,2] 宋现春[2] 姜洪奎[2] 张承瑞[1] 

机构地区：[1]山东大学机械工程学院,济南250061 [2]山东建筑大学机电工程学院,济南250101

出　　处：《武汉理工大学学报》2009年第24期54-57,共4页Journal of Wuhan University of Technology

基　　金：国家自然基金(50675124);国家973基础研究资助项目(2009CB724406);山东省科技攻关计划资助项目(2008GG10004009)

摘　　要：滚珠丝杠螺母副的轴向刚度对数控机床进给系统的定位精度有着很大的影响。根据Hertz理论,推导了单螺母滚珠丝杠螺母副的轴向刚度计算公式,分析了其影响因素,并运用Matlab仿真软件进行了仿真,得出了其关系曲线。结果表明,增大滚珠丝杠轴向载荷、滚珠数目及螺旋升角,减小接触角和曲率比,都可以提高单螺母滚珠丝杠副的轴向刚度。The axial stiffness of the ball screw pairs has important influence on positioning accuracy of feeding system for NC machine tool. On the basis of the Hertz theory, it derives the axial stiffness equation of single-nut ball screw pairs, analyses influence factors, and simulation analysis is carried on with the simulation software Matlab, at last, the relationship curve is obtained. The result shows that the axial stiffness of single-nut ball screw pair increases with axial load, ball numbers and lead angle, and decreases with contact angle and curvature ratio.

关 键 词：滚珠丝杠副 轴向刚度 影响因素 关系曲线 

分 类 号：TH132.1[机械工程—机械制造及自动化]