基于ANSYS数控车床静压气体轴承主轴的模态分析.PDFVIP

现代科学仪器 第1期2014年2月 46 Modern Scientific Instruments No.1 Feb. 2014 基于ANSYS数控车床静压气体轴承主轴的模态分析 李树森　田倩　陈素平　高景洲　张秋实 (东北林业大学机电工程学院　哈尔滨　150040） 摘　要　针对气体静压轴承支撑的精密数控车床主轴系统工作高精度的要求，在机床工作过程中，主轴高速旋转，静压 气体轴承的支撑刚度随着转速动态变化。为了了解主轴工作过程中的动态特性，应用 Pro/E 软件对主轴进行三维建模，并用 ANSYS 对其进行模态分析，得到各阶固有频率和振型。掌握数控车床主轴各阶振动模态的特点，有利于气体轴承支持下的数控 车床主轴结构设计，为机床的进一步研究及优化提供理论依据。 关键字　数控车床主轴；静压气体轴承；模态分析；固有频率；振型 中图分类号　TH113.2 文献标识码：A 库 Modal Analysis of Aerostatic Bearing Spindle on CNC Lathe Based on ANSYS Li Shusen,Tian Qian,Chen Suping,Gao Jingzhou,Zhang Qiushi 例 (School of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin,150040) Abstract Spindle system on Precision CNC lathe supported by aerostatic bearing is high precision.In the process of 案 machine working,spindle rotates in high speeds,and the supporting stiffness of aerostatic bearing changes dynamically with E A the change of rotation speed of spindle.In order to understand the dynamic characteristics of the spindle system,Pro/E is used to establish 3D finite element model of spindle,and the natural frequencies and mode shapes are obtained by utilizing C ANSYS.It is very essential to research the characteristics of CNC lathe,which is good for CNC lathe spindle structure 模 design with the sport of gas bearing.This article provides important basis for further study and optimal design. Key words CNC lathe spindle;Aerostatic bearing;Modal analysis;Natural frequency;Vibration type 凯 O 在计算机技术高速发展下，国内外对静压气体 动力学分析的起点和重点是模态分析，模态分