模具精各部件的英文名称13

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1、Undercutreferstotheconvexorconcaveareaofpart.Whenremovingthepartfromthemold,youneedsomedevicesothatthepartofthemoldwhichcontactstotheundercutcanbemovedtoremovethepartfromthemoldsincethepartwillnotberemovabledirectlywithoutthedevice.ThisprocessiscalledUndercutprocess.Undercutprocessusesdifferentmeth

2、odsdependinguponwhethertheundercutisoutsideorinsidethepart.Herearesomeexamplesofpartswithundercut.Push-pinGripofadriverGripofacupNow,let'slearnaboutexternalslidecoremethod,internalslidemethod,andhydrauliccylindermethodofundercutprocess.ExternalSlideCoreMethodTheexternalslidecoremethodisusuallyusedf

3、ortheprocessofouterundercut.Workingalongwiththeopen/closemovementofamold,thismethodslidestheslidecoretoprocesstheundercut.Thehydrauliccylindermethodisalsoavailable,whichwillbeexplainedindetaillaterSlideCoreBodyUnitTheportionwheretheundercutprocessisperformedlinkedalongwiththemovementofmoldopening.T

4、heamountofmovementoftheslidecoreandtheangleandthelengthoftheangularpinarekeyfactorstothisunit.Thelockingblockinstalledtothecavityplatereceivesthepressurefromtheinjectionwhenclosingthemold.Uponopeningofthemold,theslidecoremovesbackwardbytheforcefromtheangularpinandthespring,thusreleasingthepart.Asth

5、eholewillbemisalignedandtheangularpinwillnotbeinsertediftheslidecoremovestoofarbackward,acorestopblockneedstobeinstalled.Thiscorrelationisillustratedbelow.(Clickeachnameinthefiguretodisplaythedescription.)窗体顶部窗体底部Thereliefdistanceandthetiltangleoftheangularpinareasfollows:S:UndercutamountS1:Slidest

6、rokeamount:Tiltangleofslidecore:TiltangleofangularpinS1=S+5mmup=+(2-5)20Inordertopreventtheslidecoreandthelokingblockfrominterveningwitheachotherinmoldopeningandclosing,makethetiltangleoftheangularpinsmallerthanthatofthelockingblock.Also,agapof0.5mmisaddedtotheholeforangularpinforerrorsoccurringatp

7、rocessing.PushBackSpringThemasswhentheslidecoreisslidingvariesdependingonthedirectionofsliding.Supposeyouinstalla5kgslidecoreonthesideparalleltotheground.Howlongshouldthespringbe?Thestrokeis20mm.D: