龙门式机床横梁结构有限元模态分析  

The FEM- based Vibration Mode Analysis of the Beam for Gantry Machine Tool

作　　者：张东生[1] 宁玮[1] 宋春明[1] 张政武[1] 余清华[2] 

机构地区：[1]陕西理工学院机械工程学院,陕西汉中723003 [2]汉川机床集团有限公司,陕西汉中723003

出　　处：《机械设计与制造工程》2014年第5期21-23,共3页Machine Design and Manufacturing Engineering

基　　金：陕西省科技统筹创新工程计划项目(2012JTDZ);陕西省教育厅专项计划项目(12JK0667)

摘　　要：龙门式机床横梁的动刚度是影响机床加工精度的重要因素。针对某企业的研发产品,通过建立龙门式机床横梁的三维实体模型和有限元模型,对横梁进行了有限元模态分析,得出了横梁前四阶模态的固有频率和振型。数值结果表明该产品具有良好的动态刚度特性,为后续的优化设计提供了理论依据。The dynamic stiffness of the beam for gantry machine tool is one of the important factors on the working accuracy. Aiming at the products development,it establishes the 3D model and FEM model of the beam for gantry machine tool,analyzes the modal behaviors and obtains the natural frequencies and modes. The numerical results show that the gantry machine tool has good dynamical characteristics. These provide a theoretical basis for the subsequent optimization design.

关 键 词：龙门式机床 横梁 有限元 模态分析 

分 类 号：TH213.6[机械工程—机械制造及自动化]