基于ABAQUS的数控成形铣齿铣床床身结构的动态优化设计  

Dynamic Optimization Design of CNC Milling Machine Tools Bed Structures Based on ABAQUS

作　　者：刘梅[1] 洪荣晶[1] 袁鸿[1] 丁文政[2] 

机构地区：[1]南京工业大学机械与动力工程学院,南京210009 [2]南京工程学院先进数控技术江苏省重点实验室,南京211167

出　　处：《机械设计与制造》2012年第8期176-178,共3页Machinery Design & Manufacture

基　　金：江苏省工业装备数字制造及控制技术重点实验室高技术项目(BM2007201);国家自然基金(51175242);科技部科技型中小企业创新基金(10c26213211097)

摘　　要：床身是数控机床的重要基础部件,其结构设计是否合理将直接影响整个机床的动态特性。文中运用ABAQUS对某型数控铣齿机床床身进行模态分析,对比分析了圆形和方形两种不同的出砂孔形状对床身固有频率的影响,同时对床身内部横向、纵向筋板厚度以及床身壁厚的变化对床身动态特性的影响进行了分析,并以此结果为依据,在避免数控机床发生共振的前提下,以减轻床身的重量为优化目标,对原有机床进行结构优化,最终使得床身重量减轻了1.68t,满足优化目标,也为后续机床结构设计提供参考依据。As the important foundation of numerical control machine parts,whether the structure design of bed is reasonable will directly influence the dynamic characteristics of the machine tool.In this paper,modal analysis of milling machine tools bed is researched based on ABAQUS,and the effects of the two different form sand holes that is round and square respectively on the natural frequency are compared.At the same time,the influence of the changes of the thickness of horizontal and longitudinal internal reinforcement plate and the wall thickness on the dynamic characteristics of the bed is analyzed.Based on the analyzed results and at the premise of avoiding resonance occurrence and reducing the weight of the bed as optimal objective,the structure of original machine is optimized,which eventually make the weight of the bed light by 1.68 t,and meet the optimized objectives,besides the results provide the reference for the follow-up machine structure design.

关 键 词：铣床 有限元分析 模态分析 结构优化 

分 类 号：TH16[机械工程—机械制造及自动化] TH17