方盒形件多道次凸模支撑渐进成形  

Multi-pass incremental forming with punch support of square box-shaped parts

作　　者：施文强 高锦张[1] 金志浩 郑璐恺 SHI Wen-qiang;GAO Jin-zhang;JIN Zhi-hao;ZHENG Lu-kai(Jiangsu Key Laboratory of Advanced Metallic Materials,School of Materials Science and Engineering,Southeast University,Nanjing 211189,China;College of Mechanical Engineering,Nanjing Institute of Technology,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 [2]南京工程学院机械工程学院,江苏南京211189

出　　处：《塑性工程学报》2022年第5期53-60,共8页Journal of Plasticity Engineering

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

摘　　要：以高宽比H/B=1.0、宽径比B/r=4.0的方盒形件为研究对象,提出了3种多道次成形路径,分别为等高平行直线成形路径、变角度直线成形路径和等高变角度成形路径。基于数值模拟和物理实验相结合的方式,以壁厚减薄率标准偏差为判断依据,探究了成形H/B=1.0、B/r=4.0方盒形件的最佳成形路径。结果表明,等高变角度成形路径最佳。探究了成形H/B=1.0、B/r=4.0方盒形件的最佳道次数目,结果表明7道次成形出的目标方盒形件壁厚分布均匀性最高。依据最佳成形路径和最佳道次数目,进一步探究了可成形B=60 mm的H/B=1.0、B/r=4.0方盒形件原始板料厚度和所对应的壁厚分布情况,证实了最佳成形路径和最佳道次数目选择的可行性和准确性。Taking the square box-shaped parts with height-to-width ratio H/B=1.0 and width-to-diameter ratio B/r=4.0 as the research object,three kinds of multi-pass forming paths were proposed,which were the forming path with the same height and parallel straight,forming path with the variable angle straight and forming path with equal height and variable angle.Based on the combination of numerical simulation and physical experiments,the best forming path of square box-shaped parts with H/B=1.0 and B/r=4.0 was explored based on the standard deviation of wall thinning rate.The results show that the optimal forming path is the equal height and variable angle.The optimal number of passes of square box-shaped parts with H/B=1.0 and B/r=4.0 was investigated,and the results show that the wall thickness distribution uniformity of the target square box-shaped parts formed by 7 passes is the highest.According to the optimal forming path and the optimal number of passes,the original panel thickness and the corresponding wall thickness distribution of the formable square box-shaped parts with B=60 mm and H/B=1.0,B/r=4.0 were further studied,which confirmed the feasibility and accuracy of the optimal forming path and the optimal number of passes.

关 键 词：方盒形件 渐近成形 多道次成形路径 凸模支撑 

分 类 号：TG379.6[金属学及工艺—金属压力加工]