基于六沟槽滚珠直线导轨副结构参数刚度优化方法研究  

Research on Optimization Method of Structural Parameter Stiffness of Six Grooves Ball Linear Guide Pair

作　　者：翟光钰 冯虎田[1] ZHAI Guangyu;FENG Hutian(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《组合机床与自动化加工技术》2025年第3期160-164,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金项目(51905274);中央高校基本科研业务专项项目(30923011011)。

摘　　要：刚度越来越成为评价高精密数控机床的重要指标,研究提高刚度的优化方法对提高机床性能非常重要,以具有高刚性的KUSE-35型号六沟槽滚珠直线导轨副为研究对象,在构建刚度模型的同时考虑了裙部变形因素的影响,通过对比传统刚度模型,基于不同预紧等级,对每排滚珠的接触特性作出了分析,验证了提出模型的意义和优化指标,并研究了导轨副的结构参数等因素对导轨副刚度的影响,改变结构参数影响了单个滚珠受力、初始预紧力、赫兹接触系数,从而改变最小刚度值和临界载荷值,对于六沟槽结构,增加滚道数可以提高刚性并改变刚性曲线变化趋势,为导轨副刚度的优化设计提供了支撑。Stiffness has increasingly become an important index for evaluating high-precision CNC machine tools.The slide block of guideway pair,which is used as a transmission component,is a semi-open element,so it will deform under external force,and the expansion deformation of its skirt has a serious impact on the determination of stiffness.This paper takes the model KUSE-35 six-groove ball linear guide pair as the research object.Firstly,the stiffness model considering the expansion deformation of the slide skirt is introduced.Compared with the traditional stiffness model,the force magnitude,contact Angle change and stiffness value of each row of balls are analyzed.Moreover,the influence of factors such as the preload grade and structural parameters of the guide pair on the stiffness of the guide pair is studied,which provides support for the optimal design of the guide pair stiffness.

关 键 词：刚度建模 扩张变形 优化分析 

分 类 号：TH16[机械工程—机械制造及自动化] TG66[金属学及工艺—金属切削加工及机床]