薄壁件多点柔性加工变形的有限元分析  

Finite element analysis of the thin-wall components’s deformation during the multi point flexible processing

作　　者：张晓峰[1] 周凯[2] 赵加清[3] 

机构地区：[1]河西学院机电工程系,甘肃张掖734000 [2]清华大学精密仪器及机械学系,北京100084 [3]清华大学机械工程系,北京100084

出　　处：《制造技术与机床》2009年第4期103-107,共5页Manufacturing Technology & Machine Tool

基　　金：国家高技术研究发展专项经费(863课题2006AA04Z145);国家自然科学基金(项目编号50775126)

摘　　要：针对开发薄壁件多点柔性工装系统的需求,研究了薄壁件多点柔性数控加工中的变形问题。通过建立工件加工的有限元模型,利用ANSYS对变形进行静态非线性分析,得到了不同受力、不同间距情况下最大变形量随工件厚度变化的规律,以及不同受力、不同工件厚度情况下最大变形量随支撑间距变化的规律,同时还得到了不同厚度、不同间距情况下最大变形量随切削力变化的规律。分析结果表明:工件厚度变化时,最大变形量近似呈指数规律变化;支撑距离和切削力变化时,最大变形量近似呈线性规律变化。研究结果为更有效解决柔性工装的优化设计和控制问题提供了必要依据。According to the requirement of developing multi-point flexible processing equipment of sheet thin-wall components, the deformation problem in the CNC machining of sheet skin with multi-point flexible processing equipment is studied. The law about maximum deformation under different skin thickness, supporting space and cutting force is obtained by establishing the finite element model of the thin-wall com ponents and conducting static nonlinear analysis for deformation with ANSYS. The result shows that the law of maximum deformation is exponential with skin thickness and linear with cutting force and supporting space approximately. The result provides essential guide for solving the optimizing design and effective control of flexible processing equipments.

关 键 词：薄壁件 柔性加工 有限元模型 变形分析 变形规律 

分 类 号：TG506[金属学及工艺—金属切削加工及机床] TG292