四L悬浮导向分开支承型直线进给单元模态分析  

Modal Analysis of The Four-L Separately Suspended and Oriented Type Linear Feed Unit

作　　者：肖龙雪[1] 吴树谦 朱维南[3] 吴国庆[4] 

机构地区：[1]南通大学工程训练中心,江苏南通226019 [2]School of Mechanical Engineering,Technical University of Darmstadt [3]南通大学机械工程学院,江苏南通226019 [4]南通大学研究生部,江苏南通226019

出　　处：《机械设计与制造》2014年第5期186-188,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(60974049);国家自然科学基金项目(61273151);国家自然科学基金青年科学基金项目(61004053);南通大学教学研究项目(13050902)

摘　　要：介绍了一种自行设计的四L悬浮导向分开支承型直线进给单元的机械结构和工作原理,研究了单自由度磁悬浮支承系统的数学模型,建立了五自由度磁悬浮直线进给单元的振动模型。借助ANSYS软件对四L悬浮导向分开支承型直线进给单元进行模态分析,计算出该直线进给单元的多阶固有频率和振型,并分析了电磁铁的磁悬浮支承的刚度和阻尼对四L悬浮导向分开支承型直线进给单元固有频率的影响。计算分析可用于指导机床用磁悬浮直线进给单元结构的优化设计。It presents the structural and working principle of the four-L separately suspended and oriented type linear feed unit which was designed by ourselves. After the mathematical model of single degree of freedom magnetic suspension bearing system was analyzed, the vibration model of five degrees of freedom maglev linear feed unit was established. Its modal analysis was made and inherent frequeney was calculated with its strikeouts with the help of ANSYS software. The influence on the inherent frequency of electro--tic levitation unit caused by stiffness and damping coefficients of electromagnetic levitation bearing were analyzed respectively. The calculation and analysis presented could help us to design the structure of the maglev linear feed unit for CNC machine tools.

关 键 词：磁悬浮 直线进给 模态分析 固有频率 刚度 阻尼 

分 类 号：TH16[机械工程—机械制造及自动化]