第48卷第3期Vol.48No.3FORGING&STAMPINGTECHNOLOGY2023年3月Mar.20231060铝板两道次渐进成形外缘翻边路径优化刘金杰1,高锦张1,金志浩1,郑璐恺2(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)摘要:运用数值模拟与实体实验相结合的研究方法,设计并优化出一种两道次渐进成形外缘翻边路径,相较于单道次成形,该路径适用的加工范围更广。研究结果表明,使用圆弧直线两道次渐进成形外缘翻边路径,可以加工单道次无法成形的毛坯直径较大的翻边制件,提升制件的壁厚分布状态,在将第1道次的加工直径设置为dm+(D-dm)/4时制件的成形质量最好。根据有限元模拟实验,分析制件的壁厚分布曲线和平均壁厚值,拟合出扩孔两道次渐进成形圆孔翻边高度的表达式,并通过实体实验验证,实现了对两道次渐进成形外缘翻边高度的预测。关键词:渐进成形;外缘翻边;成形路径;翻边高度;壁厚分布DOI:10.13330/j.issn.1000-3940.2023.03.011中图分类号:TG379.6文献标志码:A文章编号:1000-3940(2023)03-0080-08Optimizationonouteredgeflangingpathfor1060aluminumsheetintwo-passincrementalformingLiuJinjie1,GaoJinzhang1,JinZhihao1,ZhengLukai2(1.JiangsuKeyLaboratoryofAdvancedMetallicMaterials,SchoolofMaterialsScienceandEngineering,SoutheastUniversity,Nanjing211189,China;2.CollegeofMechanicalEngineering,NanjingInstituteofTechnology,Nanjing211189,China)Abstract:Atwo-passincrementalformingouteredgeflangingpathwasdesignedandoptimizedbyusingtheresearchmethodcombiningnumericalsimulationandphysicalexperiment,andcomparedwiththesingle-passforming,itwasapplicabletoawiderprocessingrange.Theresearchresultsshowthattheuseoftheouteredgeflangingpathwithcirculararcandstraightlineintwo-passincrementalformingcanprocesstheflangingpartswithlargerblankdiametersthatcannotbeformedinasinglepassandimprovethewallthicknessdistributionofworkpiece,andtheformingqualityisthebestwhentheprocessingdiameterofthefirstpassissettodm+(D-dm)/4.Accordingtothefi-niteelementsimulationexperiment,thewallthicknessdistributioncurveandtheaveragewallthicknessvalueofworkpiecewereanalyzed,andtheexpressionoftheroundholeflangingheightforthetwo-passincremental...
