月基二维转台轴承预紧力和系统刚度计算  

Computation of the relationship between bearing preload of lunar-based two-dimensional turntable and system stiffness

作　　者：王智[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033

出　　处：《吉林大学学报（工学版）》2015年第6期1831-1835,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(61108066)

摘　　要：为了研究在转台结构形式确定的情况下,轴承预紧力与系统刚度的关系,分析了轴承预紧力、轴承刚度和轴系刚度之间的关系,推导了轴承预紧力与轴系固有频率之间的计算公式,并通过有限元分析的方法获得了轴承预紧力与系统固有频率的关系曲线。通过对二维转台固有频率的测试,验证了该方法的正确性,同时为轴承最佳预紧力的确定提供了一个有效的方法。The relationship between bearing preload and system stiffness was investigated under the condition that the structure turntable was fixed.The relationships among bearing preload,bearing stiffness and shafting stiffness were analyzed.The computation formula between bearing preload and shafting natural frequency was deduced.Using finite element analysis the relationship curve between bearing preload and system natural frequency was obtained.Natural frequency tests of a twodimensional turntable verified the validity of the proposed method,and an effective method was provided to determine the optimum bearing preload.

关 键 词：机械设计 极紫外相机 二维转台 轴承 预紧力 刚度 

分 类 号：TH133.3[机械工程—机械制造及自动化]