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模具设计与制造专业外文翻译--冲压成形与板材冲压.pdf

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模具设计与制造专业外文翻译--冲压成形与板材冲压 外文原文 CharacteristicsandSheetMetalForming 1.Thearticleoverview Stampingisakindofplasticformingprocessinwhichapartis producedbymeansoftheplasticformingthematerialundertheaction ofadie.Stampingisusuallycarriedoutundercoldstate,soitis alsocalledstamping.Heatstampingisusedonlywhentheblank thicknessisgreaterthan8-100mm.Theblankmaterialforstampingis usuallyintheformofsheetorstrip,andthereforeitisalsocalled sheetmetalforming.Somenon-metalsheets(suchasplywood,micasheet, asbestos,leather)canalsobeformedbystamping. Stampingiswidelyusedinvariousfieldsofthemetalworking industry,anditplaysacrucialroleintheindustriesfor manufacturingautomobiles,instruments,militarypartsandhousehold electricalappliances,etc. Theprocess,equipmentanddiearethethreefoundationalproblems thatneededtobestudiedinstamping. Thecharacteristicsofthesheetmetalformingareasfollows: (1)Highmaterialutilization (2)Capacitytoproducethin-walledpartsofcomplexshape. (3)Goodinterchangeabilitybetweenstampingpartsduetoprecision inshapeanddimension. (4)Partswithlightweight,high-strengthandfinerigiditycanbe obtained.(5)Highproductivity,easytooperateandtorealize mechanizationandautomatization. Themanufactureofthestampingdieiscostly,andthereforeitonly fitstomassproduction.Forthemanufactureofproductsinsmallbatch andrichvariety,thesimplestampingdieandthenewequipmentsuchas astampingmachiningcenter,areusuallyadoptedtomeetthemarket demands. Thematerialsforsheetmetalstampingincludemildsteel,copper, aluminum,magnesiumalloyandhigh-plasticityalloy-steel,etc. Stampingequipmentincludesplateshearpunchingpress.Theformer shearsplateintostripswithadefinitewidth,whichwouldbepressed later.Thelatercanbeusedbothinshearingandforming. 2(Characteristicsofstampingforming Therearevariousprocessesofstampingformingwithdifferent workingpatternsandnames.Buttheseprocessesaresimilartoeach otherinplasticdeformation.Therearefollowingconspicuous characteristicsinstamping: ,1,(Theforceperunitare