中国机械工程2023，Vol.34Issue(24)：2952-2962,11.DOI:10.3969/j.issn.1004-132X.2023.24.007
考虑尺寸误差与径向载荷的双螺母滚珠丝杠静刚度分析
Static Stiffness Analysis of Double-nut Ball Screws Considering Dimensional Errors and Radial Loads
摘要
Abstract
A calculation model of the axial static stiffness for a preloaded double-nut ball screw was improved by considering both the dimensional errors and radial loads.Firstly,based on Hertz theory,the ball load distribution and axial static stiffness model were improved considering the di-mensional errors in the manufacturing processes and the radial loads caused by factors such as improp-er assembly.Secondly,the Newton-Raphson iterative method was used to calculate the axial static stiffnesses of the double-nut ball screws,and the loading deformation tests were carried out on the self-developed test bench to verify the correctness of the model.Finally,the influences of axial loads,radial loads and ball dimensional errors on the axial static stiffnesses of double-nut ball screws were studied by simulation analysis.The results show that the static stiffness model established has a good effect on describing the axial deformation displacements and axial static stiffnesses,which has a good reference significance for guiding the bearing capacity evaluation and precision design of the preloaded double-nut ball screw under static or low-speed conditions.关键词
滚珠丝杠/轴向静刚度/径向载荷/载荷分布Key words
ball screw/axial static stiffness/radial load/load distribution分类
机械制造引用本文复制引用
陈光宇,翁直威,张松..考虑尺寸误差与径向载荷的双螺母滚珠丝杠静刚度分析[J].中国机械工程,2023,34(24):2952-2962,11.基金项目
济南市高校院所创新团队项目(2020GXRC025) （2020GXRC025）
山东省重点研发计划(2021SFGC0902) （2021SFGC0902）
山东省泰山学者工程专项(ts201712002) （ts201712002）
