blankintoacavityoftherequiredshape,andatthesametimetoconfinethemetalbetweenthedrawingsurfaceswhichisforcedtochangeitsformfromaflatblanktothedesiredshape.Thisprocessisdependentonthethicknessofthemetal,depthofthedraw,andheightoftheflangetobeformed.Specificationofthedieforaparticularapplicationmustbegovernedbytheengineerwhohassufficientexperienceandknowledgeabouttheoperationandconstructionofthevariousdieshapes.Inthedesigningprocessofdrawdies,thedesignerexamineswhetherthepanelgeometrydatahasdefectsornot.Ifthereisadefect,itshouldberearranged.Afterthisprocess,thedesignerpointsoutthepunchprofileandblankcurveamongthesurfacesandcurveswhichconsiststhegeometryofthepanel.Thefirststepistodeterminedieface,offsetline,designofwearplate,blocklifterandgauge.Nextimportantstepistodeterminethesizeandlayoutofdieset.[]Finally,severalcomponentssuchasbalanceblo量,而且能通过精确管理几何数据来提高设计精确度。
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