1060铝板渐进成形外缘翻边壁厚分布与翻边高度的模拟研究  

Simulation research on wall thickness distribution of outer edge flanging and flanging height in incremental forming of 1060 aluminum sheet

作　　者：刘金杰 高锦张[1] Liu Jinjie;Gao Jinzhang(Jiangsu Key Laboratory of Advanced Metallic Materials,School of Materials Science and Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]东南大学材料科学与工程学院江苏省先进金属材料高技术研究重点实验室,江苏南京211189

出　　处：《锻压技术》2021年第10期56-61,共6页Forging & Stamping Technology

基　　金：先进数控技术江苏省高校重点建设实验室开放基金项目(KXJ05017)。

摘　　要：基于DYNAFORM软件,对1060铝板单道次渐进成形外缘翻边进行模拟研究。探究对于一定厚度的金属板料在渐进成形外缘翻边直径为d_(m)时,不同毛坯直径D对成形结果的影响。结果表明:对于翻边直径d_(m)一定的外缘翻边制件,随着毛坯直径D的增大,制件壁厚的分布状态依次呈现线性增厚、曲线增厚和中部减薄3种特征,当壁厚出现中部减薄时,制件的成形质量大大降低,无法满足使用需求,将成形时不出现中部减薄的最大毛坯直径称为该尺寸下的临界翻边直径d_(m临界)。同时,对于渐进成形外缘翻边高度的研究表明,翻边高度与毛坯直径的关系可以近似采用二次多项式来表达。Based on software DYNAFORM,the outer edge flanging of 1060 aluminum sheet in a single pass incremental forming was simulated and studied,and for a certain thickness of sheet metal,the influence of different blank diameters D on the forming result was investigated when the outer edge flange diameter was d_(m) in the incremental forming.The results show that for the outer edge flanged parts with a certain flanging diameter d_(m),with the increasing of the blank diameter D,the distribution state of the wall thickness for part sequentially presents three characteristics such as linear thickening,curve thickening and central thinning.When the wall thickness is reduced in the middle,the forming quality of part is greatly reduced and cannot meet the needs of use.The maximum blank diameter without middle thinning during forming is called the critical flanging diameter d_(m临界)under this size.At the same time,the research on the outer edge flanging height in the incremental forming shows that the relationship between the flanging height and the blank diameter can be approximated by a quadratic polynomial.

关 键 词：渐进成形 外缘翻边 单道次 翻边高度 翻边直径 

分 类 号：TG379.6[金属学及工艺—金属压力加工]