摘要
对两种常用滚珠丝杠支承系统的滚珠丝杠-轴承进行分析,采用三折线逼近法推导出滚珠丝杠支承系统滚珠丝杠-轴承综合轴向变形量随位置和负载变化的双变量函数关系式,综合轴向变形量随位置的变化形态近似呈开口向下的非对称弧线形,推导出最大综合轴向变形量及其位置坐标的计算式。分析和试验结果表明,随着滚珠丝杠、轴承两者最大变形量之比逐渐减小,滚珠丝杠-轴承综合轴向变形量变化形态趋于平缓,出现最大变形量的位置坐标逐渐沿负载方向离开两支承跨距的中心。
The ball screw-bearing of two kinds of common ball screw support units were analyzed.Using three-broken-line approximation method,the bivariate function of comprehensive axial deformations of ball screw-bearing in ball screw support units was derived with the change of position and load.The comprehensive axial deformations with the change of position was approximately asymmetric arc with the opening downward,and the calculation formula of maximum comprehensive axial deformations and the position coordinate were derived.Analysis and experimental results show that the change form of the comprehensive axial deformations of ball screw-bearing tends to flat while the ratio of maximum deformation between ball screw and bearing decreasing gradually,and the position coordinates of maximum deformation move away gradually from the center of the two supporting spans along the load direction.
作者
徐晓华
蒋桂平
韩兴国
张政泼
XU Xiaohua;JIANG Guiping;HAN Xingguo;ZHANG Zhengpo(College of Mechanical and Electrical Engineering,Guilin University of Aerospace Technology,Guilin,Guangxi,541004;Guilin Guanglu Measuring Instrument Co.,Ltd.,Guilin,Guangxi,541213)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2023年第7期830-837,共8页
China Mechanical Engineering
基金
国家自然科学基金(51965014,62241304)
广西高校中青年教师科研基础能力提升项目(2022KY0797)。
关键词
滚珠丝杠支承系统
轴向负载
综合轴向变形
位置坐标
ball screw support unit
axial load
comprehensive axial deformation
position coordinate
