catia基础教学讲解内容手册14.ppt

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1、ChapterFourADVANCEDDRESS-UPFEATURES39OnceOKhasbeenselected,yourpartwillappearwiththefilletedareahighlightedbyorangelinesattheboundaries.ClickanywhereOFFtheparttogetridofthelinesandseeyourpart40ACHAMFERisusedthesamewayasthefilletcommand.ImportantchangesthatyoucanmakeintheChamferdefinitionbo

2、xincludechangingthelengthandangleofthechamfer.chamfer41JustlikeFILLET,theCHAMFERisshownwithanorangeborderuntilyouclickoffofthepartinthebluearea.42Thisiswhatyourpartlookslikeonceithasbeenproperlychamfered.NotethatbothEdgeFilletandChamferareshownonthepartstreeintheirorderofoperations.43Anoth

3、erthingthatbecomesimportant,especiallyduringthemanufacturingprocess,isDRAFTANGLE.Thisistheanglethatyoubuildintoyourpartsothatitcaneasilybeextractedfromamoldduringthecastingprocessdraft44Thefacesthatyoupicktodraftaretheonesthatturnred,andtheNeutralElementfacepickedbecomesblue.Thearrowdeterm

4、ineswhichwaytheanglewilloccur.Don’tforgetto‘click’ontheneutralelementselectionboxbeforeclickingonthechosenface.DirectionarrowandanglerelationThereisadirectrelationbetweenthedirectionarrowandtheangleshown.Closerinspectionshowsthatasyouswitchthedirectionofthearrow,youalsoswitchthedirectionof

5、thedraft.CLICKHERE45Nowyourparthasafivedegreedraftanglethatyouhavedesignedintoit.Thisdraftangleinnowaychangesthewaythatyourpartwillactinrelationtootherpartsinanassembly.46AnotherhandyDress-UpFeatureisSHELL.Thisisusedfor‘hollowingout’yourpartwhenasolidpartisnotneeded.Shellisdefaultedto.079i

6、n(ifyouareusinginchunits)butyoumaychangetheinsideandoutsidedimensions,alongwiththefacestoremove,intheShellDefinitionBox.shell.079indefaultshownonchosenface47Nowyourpartisshelledandawaitinganyotherdressupfeaturesthatyoumaywishtodo.48ThelastmajordressupfeaturethatyoucanutilizeistheTHICKNESSu

7、tility.Thisallowsyoutoincreasethethicknessofjusttheareaofthepartthatyouhavechosen.Herewehavechosentomaketheonesideofthebox.039inthick.thickness49Thepartisnowthickerontheedgethatyouchose,andwillremainhighlighteduntilyouclickoffofit.50Hereisyourfinalpart,withit’