基于NewSpilad的高速电主轴静动态特性分析与研究  

Analysis and research on static and dynamic characteristics of highspeed motorized spindle based on NewSpilad

作　　者：戴玉红 侯亚茹 任慧玲 朱晓峰 DAI Yuhong;HOU Yaru;REN Huiling;ZHU Xiaofeng(Beijing Precision&Engineering Research Co.,Ltd.,Beijing 101312,CHN)

机构地区：[1]北京工研精机股份有限公司,北京101312

出　　处：《制造技术与机床》2024年第3期115-119,共5页Manufacturing Technology & Machine Tool

摘　　要：文章通过NewSpilad软件对电主轴进行静态和模态分析,探究轴承预紧力和主轴悬伸量对主轴刚度及固有频率影响。结果表明:调整轴承的预紧力对主轴径向刚度影响很小,变化量在20%以下;轴向刚度影响较大,变化量在50%以上;对主轴的固有频率影响较小,最大变化量为24%;增加悬伸量对主轴轴向刚度影响较小,变化量在5%以下;对径向刚度影响较大,变化量在13%左右;一阶固有频率有提升趋势。并通过主轴静动态特性测试试验验证,对比发现有限元分析结果与实际测试结果误差在10%以下。该研究结果为主轴静动态特性分析提供理论基础,进一步提升了主轴设计开发能力。The static and modal analyses of the motorized spindle were carried out by NewSpilad software to explore the influence of bearing preload and spindle extended length on the stiffness and natural frequency of the spindle.The results show that adjusting the bearing preload has little effect on the radial stiffness of the spindle,with a change of less than 20%.The axial stiffness has a large influence,and the change amount is more than 50%.The effect on the intrinsic frequency of the spindle is small,and the maximum change is 24%.Increasing the overhang has a small effect on the axial stiffness of the spindle,with a change of 5% or less.The effect on radial stiffness is larger,and the change amount is about 13%.The first-order intrinsic frequency has a tendency to increase.And verified by the spindle static and dynamic accuracy test.Comparison found that the error between the finite element analysis results and the actual test results is within 10%.The results of this study provide a theoretical basis for the spindle static and dynamic characteristics analysis,and further enhance the spindle design and development capabilities.

关 键 词：电主轴 静态特性 动态特性 轴承预紧力 主轴悬伸量 

分 类 号：TH122[机械工程—机械设计及理论]