第48卷第6期Vol.48No.6FORGING&STAMPINGTECHNOLOGY2023年6月Jun.2023基于Dynaform的新能源地库车顶盖冲压拉深内、外拉延筋间距的数字化设计技术鲜小红1,杨柳2,刘欢2,陈英3(1.四川职业技术学院智能制造学院,四川遂宁629000;2.四川江淮汽车有限公司,四川安居629006;3.乐山职业技术学院智能制造学院,四川乐山614000)摘要:采用非线性有限元软件Dynaform,在相同的冲压工艺条件下,对不同内、外拉延筋间距时新能源地库车D6176顶盖的冲压拉深过程进行了数值模拟,并通过对成形极限图、厚薄变化云图、“光斑”大小及分布的研究,最终确定该地库车顶盖冲压拉深的内、外拉延筋间距的合理范围为20~40mm,其中40mm为相对最优间距,并通过了生产验证。同时研究发现,在内、外拉延筋间距为20~30mm时,“光斑”随间距的增大而增多;内、外拉延筋间距为30~40mm时,“光斑”随间距的增大而减少。在20~40mm范围内,最大“斑点”随内、外拉延筋间距的增大呈下降趋势,且在20~30mm范围内下降速率较大,在30~40mm范围内下降速率较小。关键词:新能源地库车;驾驶室顶盖;冲压成形;拉延筋;光斑DOI:10.13330/j.issn.1000-3940.2023.06.008中图分类号:TG386.3+2文献标志码:A文章编号:1000-3940(2023)06-0050-11DigitaldesigntechnologyforinnerandouterdrawbeadspacinginstampinganddrawingforroofcoverofnewenergyundergroundparkinggaragevehiclebasedonDynaformXianXiaohong1,YangLiu2,LiuHuan2,ChenYing3(1.SchoolofIntelligentManufacturing,SichuanVocationalandTechnicalCollege,Suining629000,China;2.SichuanJianghuaiAutomobileCo.,Ltd.,Anju629006,China;3.SchoolofIntelligentManufacturing,LeshanVocationalandTechnicalCollege,Leshan614000,China)Abstract:UsingnonlinearfiniteelementsoftwareDynaform,underthesamestampingprocessconditions,thestampinganddrawingprocessofroofcoverfornewenergyundergroundparkinggaragevehicleD6176wasnumericallysimulatedwithdifferentinnerandouterdrawbeadspacing,andthroughthestudyofforminglimitdiagram,clouddiagramofthicknesschange,andsizeanddistributionof“lightspots”,itwasfinallydeterminedthatthereasonablerangeofinnerandouterdrawbeadspacinginthestampinganddrawingfortheroofcoverofundergroundparkinggaragevehiclewas20-40mm,ofwhich40mmwastherelativelyoptimalspacing.Then,theproductionverificationwas...
