辅助工艺孔参数对板材渐进成形性能影响研究  

Research into Effects of Auxiliary Process Hole Parameters on Sheet Incremental Forming Properties

作　　者：闫飞宇 查光成[1,2] 黄奕 张晨 查威 YAN Fei-yu;ZHA Guang-cheng;HUANG Yi;ZHANG Chen;ZHA Wei(School of Materials Science and Engineering,Nanjing Institute of Technology,Nanjing 211167,China;Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology,Nanjing,211167,China)

机构地区：[1]南京工程学院材料科学与工程学院,江苏南京211167 [2]江苏省先进结构材料与应用技术重点实验室,江苏南京211167

出　　处：《南京工程学院学报（自然科学版）》2022年第3期61-66,共6页Journal of Nanjing Institute of Technology(Natural Science Edition)

摘　　要：金属板材在渐进成形过程中,当成形角超过板材的极限成形角时,零件壁厚会出现过度减薄并导致破裂,直接影响零件的成形质量及使用性能.为了控制大成形角制件壁厚过度减薄,提高金属板材的渐进成形性能,提出一种在工艺辅助面区域开设工艺孔的渐进成形工艺方案,通过数值模拟和试验加工,发现设置合理工艺孔的辅助面能够实现对成形区域进行动态补料,有效提高板材的渐进成形性能,改善成形件的壁厚分布.In the incremental forming process of a metal sheet,when the forming angle exceeds the limit forming angle of the sheet,the wall thickness of parts will be excessively thinned,resulting in fracture,which will have a direct bearing on the forming quality and service properties of the parts.An incremental forming process scheme of opening process holes in the process auxiliary surface area is proposedto improve the excessive thinning of wall thickness of parts with large forming angle and the incremental forming properties of metal sheets.Numerical simulation and experimental processing show that forming areas are supplemented,incremental forming properties of sheet metal are upgraded and wall thickness distribution of formed parts are improved by means of reasonable process hole parameters.

关 键 词：渐进成形 过度减薄 工艺孔 成形性能 

分 类 号：TG306[金属学及工艺—金属压力加工]