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ID:38961092
大小:23.20 KB
页数:9页
时间:2019-06-22
《冲压模具毕业设计英文文献》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、附录附录1英文文献DveiopmentandmanufactureofDiesforCarBodyProductionAbstractThecostfordevelopmentandproductionofdrawdiesforcarouterpanelsextremelyhighandshouldbereduced.Furthermoreitisnecessarytoreducethefortimefordeveloping,designingandproducingthediesfortheproductionofparts.Thispap
2、erdiscussednewpresstechniques,diedesignsandmillingtechniques.ThetrendgoestosingleactingpresseswithCNCcontrolledmultipiontcushionsystemsintheoresstableandtospecialdesigneddies.Thesesystemsleadtoamorerobustandreproduableformingprocesswithimprovedproducedqualtly.Keywords:DeepDr
3、awing,CushionSysterm,BinderDesign1.IntroductionPressshoppeopleaskformorerobust,sheetmetalformingprocessesandhopethedesignerswillcomeupwithstampinggeometriesthatareeasiertoform.Wecancertainlyexpectthateffortswillbemadetodesignpartswitheasiertoformcontours.Nevertheless,theauto
4、motiveandstampingindustrieswillcontinuetoworktowardsachievingthefollowingobjectives:lIntroducingaluminumsheetmetallIncreasingtheuseofHSLA-steelwithhigheryieldStrengthlIncreasingtheuseofZanecoatesteellReducingthenumberofpartspercarlReducingthenumberofdiesperpartlProductionofp
5、artswithzerodefectslProductionofouterpanelswithexcellentsurface,sothatnohandworkisneededinthebodyinwhiteshooplReductionoftheproductioncostsIntheUSAasocalled“NearZeroStamping“-programisconductedforachievingprecisionandagilityinsheetmetalstamping.Thisprogramiscamedoutjointlyby
6、twenty-twoAutoBodyConsortiumcompaniesincooperationwithChrysler,FordandGeneralandfiveresearchinstitutions.Theobjectivesofthe‵NearZeroStamping′programistoimprovetheaccuracyofstampedsheetmetalpartsandtoreducethetimecurrentlyrequiredforsheetmetaldiedesign,tryoutandproduction.Thi
7、sisonlyanexamplethatshowstheneedforimprovementsinthepressshop.ThesegoalsarenotonlyimportantintheUSA,buttheyareimportantforeverypressshopintheworld.Furthermorewehavetorealizethatthetimeformdevelopinganddesigningthedietothefirstproductionofpartswillbereducedformabout18monthsto
8、12months.Wemustalsorememberthatstampingdiesneededtoproduceonepassengercarco
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