摘要
以滚珠直线导轨为研究对象,在实际测试的基础上提出了导轨系统中滚道表面波纹度数学模型,建立了滚珠与滚道因波纹度引起的接触量变化的解析模型.基于赫兹接触理论分析了滚珠与滚道之间接触量与接触力的关系,将滑块简化为一个刚体,建立滑块的动力学方程;在一定速度条件下对该方程进行求解,并与试验测试的结果进行对比,验证了所建立的导轨系统动力学模型的有效性.数值计算结果表明:在导轨系统振动的研究中滚道波纹度是不可忽略的因素.
The surface waviness model of races in linear motion ball guide was developed on the basis of the test,and the analytical model of contact amount changes caused by the surface waviness was established.Based on the Hertz contact theory,the relationship between the contact amount and contact force between the ball and the race was studied.The slider was simplified as a rigid body,and the dynamic equations of slider were established.The equations were solved under a certain speed of slider, and after the comparison with the experimental results,the validity of the dynamic model was verified.The results of numerical calculation show that the surface waviness of races should not be ignored in the vibration study of guide system.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第6期1-5,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家科技支撑计划资助项目(2012BAF08B01)
关键词
滚珠直线导轨
波纹度
动力学建模
数值计算
动态测试
linear motion ball guide
surface waviness
dynamic modeling
numerical calculation
dynamic testing
