高速液压夹头结构的优化设计  

Optimization Design of High Speed Hydraulic Chuck Structure

作　　者：陶德飞 李朱峰 陈建[1] 王贵成[1,2] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013 [2]南通理工学院机电工程学院,江苏南通226000

出　　处：《机械设计与制造》2015年第7期236-239,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(51075192);国家重大科技专项(ZX201304009031)

摘　　要：高速夹头是高速加工工具系统的重要组成部分,被广泛用于中轻加工载荷的高速加工,其性能直接影响高档数控机床的性能及加工质量。通过高速液压夹头/刀具模型有限元分析发现:夹头/刀具接触应力分布不均,夹头油腔转角过渡区域应力集中。本研究对油腔转角区域采用单元弧过渡形线,基于结构优化设计理论和优化方法,利用Ansys优化分析模块对夹头/刀具模型进行优化。结果表明:结构优化改善了夹头/刀具接触应力分布,降低了夹头液压腔转角过渡区域应力集中和减小了接触压力峰值,提高了高速液压夹头的可靠性和稳定性。As an important part of high speed machining tooling system,high speed chuck is widely applied to high speed machining of various loads but heavy,and the performance of which directly affects the property and processing quality of advanced computer numerical control machine tools. It is found from the analysis of hydraulic chuck/tool FEM model that there are some problems,such as uneven hydraulic chuck/tool contact pressure distribution,stress concentration in chuck cavity corner transition region. Based on structural optimization theory and methods,applies transition arcs to hydraulic chuck oil cavity corners and utilizes Ansys optimization analysis module to optimize chuck/tool model. The results show that structural optimization improves chuck/tool contact stress distribution and decreases the concentrated stress in hydraulic chuck cavity corner transition region and contact pressure peak. In addition,it also improves the reliability and stability of high speed hydraulic chuck.

关 键 词：高速加工 液压夹头 结构优化 可靠性 有限元法 

分 类 号：TH16[机械工程—机械制造及自动化]