欢迎来到天天文库
浏览记录
ID:804326
大小:118.04 KB
页数:18页
时间:2017-09-05
《冲压成型--把手连接件级进模设计外文翻译毕业论文》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、毕业设计外文文献翻译题目(中文)冲压成型(英文)Stampingbecomestyp学生姓名张皓目录1.冲压成型作者:STEPHENS2.材料特性作者:MARKJAFEStampingbecomestypTheconfidencelevelinsuccessfullyformingasheetmetalstampingincreasesasthesimplicityofthepart’stopographyincreases.Thegoalofformingwithstampingtechnologiesist
2、oproducestampingswithcomplexgeometricsurfacesthataredimensionallyaccurateandrepeatablewithacertainstraindistribution,yetfreefromwrinklesandsplits.Stampingshaveoneormoreformingmodesthatcreatethedesiredgeometries.Thesemodesarebending,stretchforminganddrawing.S
3、tretchingthesheetmetalformsdepressionsorembossments.Drawingcompressesmaterialcircumferentiallytocreatestampingssuchasbeercans.Asthesurfacesofthestampingbecomemorecomplex,morethanonemodeofformingwillberequired.Infact,manystampingshavebend,stretchanddrawfeatur
4、esproducedintheformdie.Thecommontypesofdiesthatshapematerialaresolidform,stretchformanddraw.SolidFormThemostbasictypeofdieusedtoshapematerialisthesolidformdie.Thistoolsimplydisplacesmaterialviaasolidpunch“crashing”thematerialintoasoliddiesteelonthepressdowns
5、troke.Theresultisastampingwithuncontrolledmaterialflowintermsofstraindistribution.Since“loosemetal”ispresentonthestamping,causedbyuncontrolledmaterialflow,theparttendstobedimensionallyandstructurallyunstable.StretchFormFormingoperationsthatprovideformaterial
6、flowcontroldosowithablankholder.Theblankholderisapressurizeddevicethatisguidedandretainedwithinthedieset.Stampingsformedwithablankholdermaybedescribedashavingthreeparts,showninFig.1.Theyaretheproductsurface(showninred),blankholdersurface(flatareashowninblue)
7、andawallthatbridgesthetwotogether.Thetheoreticalcorneronthewallatthepunchiscalledthepunchbreak.Thepunchopeningisthetheoreticalintersectionatthebottomofthedrawwallwiththeblankholder.Themalepunchishousedinsidethepunchopening,whereastheblankholderislocatedaroun
8、dthepunchoutsidethepunchopening.Thesetoolshaveaone-pieceuppermemberthatcontactsboththeblankholderandpunchsurfaces.Ablankorstripofmaterialisfedontotheblankholderandintolocationgauges.Onthepressdo
此文档下载收益归作者所有