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首页 cad三维建模命令(CAD 3D modeling command)

cad三维建模命令(CAD 3D modeling command).doc

cad三维建模命令(CAD 3D modeling comma…

童话诉说你我de结局
2019-01-09 0人阅读 举报 0 0 暂无简介

简介:本文档为《cad三维建模命令(CAD 3D modeling command)doc》,可适用于社会民生领域

cad三维建模命令(CADDmodelingcommand)cad三维建模命令(CADDmodelingcommand)Includingtools:layer,Dproduction,visualstyle,lightsource,material,renderingandthreedimensionalnavigation,etcYoucancreateentitymodels,wireframemodels,andmeshmodelsACADprovidestwocoordinatesystems:thefixedcoordinatesystemoftheworldcoordinatesystem(WCS,WorldCoordinateSystem),andausercoordinatesystem(UCS),ThemovablecoordinatesystemofUserCoordinateSystemBydefault,thesetwocoordinatesystemscoincideBothUCSandWCSarethreedimensionalCartesiancoordinates,whichconformtotherighthandrule,whereUCSisremovable,andWCSisfixedUCS'sXYplaneisthedefaultdrawingTheplaneiscalledtheworkingplaneAandcoordinateinputThreedimensionalCartesiancoordinateformssuchasX,y,Zorx,y,Z,theformeristheabsolutecoordinatevaluerelativetothecurrentUCSorigin,andthelatterisrelativetothepreviousinputpointCoordinatevalueCylindricalcoordinates,similartothetwodimensionalpolarcoordinates,increasethedistancefromthedeterminedpointtotheXYplaneThatistosay,thecylindricalcoordinatesoftheDpointcanbepassedthroughthepointandtheoriginoftheUCSTheprojectionlengthofthelineontheXYplaneisdeterminedbytheanglebetweentheprojectionandtheaxisoftheXandtheZvalueofthepointperpendiculartotheXYplaneForexample,<,meansthepointandTheprojectionlengthofthelineoforiginontheXYplaneisunitsTheanglebetweentheprojectionandtheXaxisisdegrees,andtheZcoordinateis,Therelativeformofcylindricalcoordinatesis<,,whichrepresentstheprojectionofunitsofthelongtailontheXYplaneofapointandtheupperinputpoint,andtheprojectionisinthepositivedirectionoftheXaxisTheincludedangleisreadings,andtheZcoordinatedifferenceisunitsWhenthesphericalcoordinatesaresimilartothepolarcoordinatesofthetwodimensions,whenthepointisdetermined,thedistancebetweenthepointandtheoriginofthecurrentcoordinatesystemisspecified,andtheprojectionandXoftheconnectinglineontheXYplaneareknownTheangleoftheaxis,andtheanglebetweenthetwolinesandtheXYplaneForexample,<<,representingadistancefromtheoriginofthecurrentUCS,isunits,intheXYplaneTheanglebetweentheprojectionandtheXaxisisdegreesTheanglebetweenthepointandtheoriginandtheplaneoftheXYisdegreesUcscoordinatedatabydefaultinthedrawingareaofthelowerleftcorneroftheviewportRepresentsthedirectionandoriginofthecurrentUCScoordinateaxisUcsiconUCScommandOpen:displaycoordinatesystemiconThecoordinatesystemiconsinthedrawingspaceandthemodelspacearenotthesameInthetwospace,whenWhentheiconisplacedonthecurrentUCSorigin,aplussignappearsatthebottomoftheiconForDUCSicons,ifthecurrentUCSSimilartotheworldcoordinatesystemWCS,theYpartoftheiconwilldisplaytheletterW,fortheDUCSicon,ifUCSisthesameasWCS,ArectangleisdisplayedattheoriginoftheXYplaneGuan:UCSiconisnotdisplayedAll:modifytheapplicationicontoalloftheactiveviewport,otherwise,theucsiconcommandwillonlyaffectthecurrentviewportNonorigin:nomatterwheretheoriginofthecurrentUCS,UCSicononlyappearsonthelowerleftcorneroftheviewportOrigin:thepositionoftheUCSiconmoveswiththemovementofthecurrentUCSorigin,thatis,theUCSiconisdisplayedattheoriginatanymomentIforiginNotonthescreen,oriconintheviewportborderwithoutclippingandcannotbeplacedattheorigin,iconwillappearintheleftviewportLowercornerFeatures:displaystheUCSicondialogbox,whichcontrolsthestyle,size,andcoloroftheUCSiconNoticethebeginningofthedialogboxThevalueisthedefaultvalueofthesystem,andgenerallydoesnotneedtobemodifiedTheucsmanUCSmanagementcommandisnamedandorthogonal(selectingoneofthepredefinedsixorthogonalcoordinates,ie,theorthographicprojectiondirectiononeofthecurrentUCS)SettingstabUCSUCScommand,OptionsandToolsmenu>thepromptinthenewUCSmenuinthecorrespondingSpecifytheoriginoftheUCS,ortheface(F)name(NA)object(OB)thelast(P)view(V)World(W)XYZZaxis(ZA)>world>:TheUCSismovedbyspecifyinganeworiginposition,andthepurposeistomovetheUCSworkingplane(thatis,theXYplane,thatis,coordinateindication)TotherequiredpositionNote:youneedtosetthedisplaypropertyoftheUCSiconforopenanddisplayontheorigin,theUCSIconWillautomaticallyfollowtheneworiginandmoveTheoriginofthemovingUCSdoesnotchangethedirectionoftheUCSaxisTheUCSisdefinedbythespecifiedZaxisvector,whichisdesignedtomovetheUCSworkingplane(ie,theXYplane)tothedesiredlocationThatistheZaxisOptionsThethreepointmethoddefinesUCS:byspecifyingtheorigin,theXaxisforwardandtheYaxisforwardtodefinethenewUCS,whichisthemostconsistentintheDmodelingThenewUCScommandisoftenusedtolocatetheUCSworkingplaneonanyspatialplaneSpecifythreepointsdirectlyNewUCSbasedontheselectedsurface:aligntheUCSworkingplane(XYplane)withtheselectedsurfaceoftheDentity,andcreateanewUCSwantWhenyouselectaface,clickontheedgeorinsidetheedgeofthesurface,theselectedsurfacewillbebright,andtheXaxisofUCSwillbefoundinthefirstTheclosestedgealignmentonafaceThe"face"optionNewUCSbasedontheselectedobject:thenewUCSstretchingdirection(thatis,theZaxisinthepositivedirection)isthesameastheselectedobjectinthestretchingdirectionThatisObjectcommandAftertheobjectisselected,theoriginofthenewUCSislocatedatthenearestvertexoftheselectedobject,andtheXaxisandoneedgeAlignmentortangencyForaflatobject,theXYplaneofUCSisalignedwiththeplaneinwhichtheobjectislocatedNewUCSwithviewdirection:newUCSforviewdirection,UCSworkingplane(XYplane)willbeparalleltoscreen,ZaxisverticalfingerTowardstheoutsideofthescreenwithoutchangingtheoriginoftheUCSViewoptionsThisoptionautomaticallytakestheviewdirectionofthenewUCSandendsthecommandRotatetheaxisofthenewUCS:thecurrentUCSrevolvesaroundtheXaxis,theYaxis,ortheZaxis,rotatingacertainangle,thusforminganewUCSAroundTherotationoftheXaxisortheYaxiswillchangetheUCSworkingplaneandtheZaxisdirectionTherotationoftheZaxisdoesnotchangetheUCSworkingplane,butchangestheXaxisandtheYaxisDirectionThatisthe"XYZ"optionYoucaninputpositiveornegativeanglevaluesFromtheXaxisforward(arrow)tothecoordinateorigindirectionObservethepositiveanglesothattheUCSrotatescounterclockwisearoundtheXaxis,andthenegativeanglemakestheUCSrotateclockwisearoundtheXaxisUCSotheroperationsrestoreUCStoWCS:"world"optionRollback:restorethepreviousUCSThe"last"optionAftertheinstructionisexecuted,thelastUCS(ifany)isrestoredSetittothecurrentUCSThelastcoordinatescreatedinthemodelspacewillbeautomaticallysavedandcreatedinthedrawingspaceThelastcoordinatesystemsRepeatthisoptiontograduallyreturntothepreviouscoordinatesystemApplicationofUCSinotherviewports:thecurrentUCSdefaultsettingsapplyonlytothecurrentviewport,canalsoapplythesettingofcurrentUCSTootheractiveviewportYouneedtoinputapplyaftertheUCScommandThecurrentUCSsettingswillbeappliedtothespecifiedviewportorallActiveviewportVviewopenviewmanagerorthographicviewsandisometricviewscanbefoundinthepresetviewWhenuserslocatetheUCSworkingplane(XYplane)throughthenewUCScommand,itisnecessarytodrawnewgraphicsintheUCSworkingplaneObject,ifyoucanadjusttheUCSworkingplanetoparalleltothedrawingscreen,andtheUCSofXisaxialright,Yaxial,willbeDrawingoperationbringsgreatconveniencePlanstartstheplaneviewcommandCurrentUCS:generatingaflatviewwiththecurrentUCSworkingplaneThisisequivalenttotheViewmenuchooseView>>threedimensionalplaneviewThecurrent>UCScommandSetthefrontviewUCS:selectaUCSfromthepreviouslysavednamedUCStogenerateaplaneviewwiththeworkingplaneoftheUCSWorld:generatingplanarviewsintheworkplaneoftheworldcoordinatesystem(WCS)Vpddvpointviewsettingcommand(foundintheDviewoptions)RelativetotheWCS:settheviewingdirectionrelativetotheworldcoordinatesystem(WCS)Circularangledisplaybox:displayandsettheangleofviewintheXYplaneprojectionandXaxisforwardangleBlackneedleindicatingnewangle,GrayneedleindicatesthecurrentangleRelativetoUCS:settheviewingdirectionrelativetothecurrentUCSFanangledisplaybox:displayandsettheanglebetweentheviewdirectionandtheXYplaneSelf:settheviewingangleXaxis:theanglebetweentheprojectionofthenewviewdirectionintheXYplaneandtheforwarddirectionoftheXaxisXYplane:theanglebetweenthenewviewpointandtheXYplaneSettoplaneviewVpointviewcommand:currentviewdirection:CIEWDIT=x,y,ZThespecifiedpointofvieworrotation(R)<displaycoordinateballandthreeshaftframe:Thespecifiedpointofview:directinputthenewX,Y,ZthreeabsolutecoordinatesAccordingtothenewviewpointtocoordinatedirectiongenerationNewobservationdirectionRotation:anewviewpointisformedafterrotatinganangleofthecurrentviewpointNeed:Displaycoordinateballandthreeaxisframe:setupanewviewpointdirectlywithcoordinateballandthreeaxisframeEffect:thecoordinateballisacompass,equivalenttothetopviewofasphere,andthecrosscursorrepresentsthepositionoftheviewpointdragamouseThecursormovesinthecompassrangeThecursorisinthesmallcircle,indicatingtheviewpointisinthepositivedirectionoftheZaxis,andthecursorislocatedinsideandoutsideBetweentherings,thepointofviewislocatedinthenegativedirectionoftheZaxisMovingcursor,thethreeaxisframecoordinatesdisplaytheobservationpointoftheviewpointinrealtimeYoucansettheviewpointbyclickingthemouseACADhastwodrawingspaces:modelspace(model)anddrawingspace(layout)Inthemodelspace,accordingtotheestablishedmodel,theusercanmodelthemodelaccordingtoacertainsizeAtthesametime,themodelcanberepresentedbymultipleviewsaccordingtotherequirementNecessarydimensioningandtextInthedrawingspace,thesameworkisallowedAtthesametime,thenumberandlocationofwindowsareunrestricted,anduserscanmovewindowsasobjectsofACAD,CopyandothereditingoperationsThetwodrawingspaceisswitchedatthebottomofthedrawingareaBydefaultthedrawingareaasaviewportMayalsoberequiredtoleavethedrawingareadividedintoapluralityofviewport,differentvisualsettingsinallviewportsPointsorviewsareusedtoobservethedifferentsidesoftheDmodelfromdifferentdirectionsSetmultipleviewports,Dmodelingoreditinginoneviewport,TheoperationresultcanalsoappearinotherviewportCreatedinthemodelspaceviewportcalledmodelspaceviewportcreatedinthedrawingspaceintheviewportiscalledtheviewportlayoutFourviewportsettings:,four>View>viewportviewportviewalsocanusetheVcommandtoopentheviewportsettingswindow,selecttheupperleftviewportView>Dview>mainview,selecttheleftundertheviewportView>Dview>view,selectedtherightviewportview>Dview>leftview,selectedtherightviewportview>Dview>SWisometric,keeptherightviewportastheactiveviewport,selecttheViewmenu>>visualstyleconceptofcommand,inthelowerrightviewportDcolormodelDifferentviewportscansetdifferentUCSThroughthedialogboxvportsviewportsviewportsettingscanbequicklysetupaviewportformatNote:startinginmodelspacevportscommandsetisamodelspaceviewportIsusedtospecifynewtwodimensionalorthreedimensionalviewportsettings,ifyouchooseatwodimensionalnewviewportwillinheritallviewportswhenTocreatethefrontviewsettings,ifyouchooseasetofstandardorthogonalthreedimensional,threedimensionalviewwillbeappliedtotheviewportvportscommandsetviewportSavethecurrentviewportconfigurationwiththespecifiednamepreservationRecoverywillbesavedfortherecoveryofthecurrentviewportviewportnameDeletethesavednameviewportWiththetwoadjacentviewportintoaviewportThesingledrawingareaissettoaviewport(theAcadrestoredefaultsettings)todisplayalloftheviewportnamedand,thedrawingareaissplitinto,,standardviewportWhenexecutingthisoption,AcadWillprompttheusertochoosetheviewportconfigurationstyle,withthesamestandardintheviewportviewportdialogboxThreedimensionaldynamicobservationInDview,youcanusezoomtoolsandtranslationtoolstoadjustviewstoview,draw,oreditgraphicalobjectsInDview,zoomtoolsandtranslationtoolscanalsobeusedAtthesametime,threedimensionaldynamicobservationtoolscanbeusedtoallowusersinDenvironmentsatanyangleandObservationofDmodelonarbitrarydistanceWhenyoumovetheworkspacetoDmodeling,youcanfindtheDnavigationareaontherightpaneldynamicobservationcanbefoundbytoolbarorundertheViewmenu,andcanalsobefoundintheDnavigationareaDynamicobservationmeansthatinthreedimensionalspace,theviewpointmovesaroundthetarget,anditisobservedfromdifferentanglesWhentheviewpointmoves,thetargetwillremainstationaryTargetpointisThecentreoftheviewport,andnotlookingatthecenteroftheobjectIftheentityisselectedandthenobserved,onlytheselectedentitycanbeobserved,andtherestwillbehiddenConstraineddynamicobservationofdorbitUsedtointeractivelyobserveobjectsinDspaceTheUCSiconinthedrawingareawillbeturnedintoaDcoloricon,andthecursorstylewillbecomeadynamicallyrotatediconPressandholdthemouseinthedrawingareaLeftanddrag,theDmodelmovesdynamicallywiththecursor(infact,theviewpointmovesaroundthetarget),attherightpointofviewIfyoureleasetheleftmousebuttonfromtheangle,youcanadjusttheobjecttothedesiredobservationpositiondforbitfreedynamicobservationItisusedtointeractivelyobserveobjectsinthreedimensionalspace,buttherotationdirectionisdeterminedbytheappearanceandpositionofthecursorTheUCSiconinthedrawingareawillbechangedintoaDcoloriconThecursorstylebecomesadynamicrotationicon,andnavigationoccursinthedrawingareaTheBall。Whenthecursorislocatedinsidethegreatcircleofthenavigationball,thedraggingoperationisexactlythesameastheconstraineddynamicobservationWhencursorInthesmallcircleofthenavigationball,thedraggingoperationcanonlyrotatetheobjectaroundthehorizontalaxisorverticalaxisWhenthecursorisinthenavigationballWhentheoutercircleislarge,thedraggingoperationcanonlyrotatetheobjectaroundtheaxisperpendiculartothescreenplane,thatis,intheplaneofthescreenContinuousdynamicobservationofdcorbitItisusedtointeractivelyobserveobjectsinthreedimensionalspaceandsetobjectstorotatecontinuouslyDraggingthecursorinthedrawingarea,theDobjectwillrotatealongthedirectionofthedragcontinuously,andclicktheleftkeytorotateTurnstopThethreedynamicobservationmodescanswitcheachotherwhenthecommandrunsWhenyoustartanydynamicobservationcommand,clicktherightmousebuttontodisplaytheshortcutmenustayInothernavigationmodes,adynamicobservationmodecanbeswitchedinthesubmenuVisualstyle(thatis,theoldversionofthecoloringfunctionisusedtosettheedgesandfacesoftheDmodel)Inviewof>visualstylemenuandtoolbarvisualstyleVscurrentvisualstyleWhentheDwireframeappliestheDwireframevisualmodeltotheDmodel,theboundariesofthemodelarerepresentedbylinesandcurves,andallofthemcanbeseenwithoutfadingHiddenorcoloredTwodimensionalwireframeisthedefaultvisualstyleofAcad,andtheDmodeloperationisusuallyinthetwodimensionalwireframevisualstyleCarriedoutThiscommandisonlyontheactiveviewportRasterandOLEobjects,lineshapesandlinewidthsarevisibleEvensystemvariablesTheCOMPASSissettoopen,andthecoordinateballisnotdisplayedintheDwireframeGenerallyusethiscommandtorecoverfromothervisualstylesVisualstyletoDwireframeWhentheDwireframeappliesDwireframevisionpatterntotheDmodel,theboundaryofthemodelisrepresentedbylinesandcurves,andallofthemcanbeseenandnotdisappearHiddenorcoloring,displayacoloreddviewporticonUCSThemethodofusingDwireframevisualstyleissimilartotheDlineframeYoucansettheCOMPASSsystemvariabletoViewcoordinateballThreedimensionalhiddenDmodelisappliedtotheDhiddenvisualstyle,andtheDwireframeisusedtorepresenttheDmodelandhidethebackfaceedge,DisplayacoloreddviewporticonUCSThemethodofDhidingvisualstyleandDlineframeBesimilar。DhiddencommandandimplicitcommandfunctionisthesameWhentherealmodelisappliedtotheDmodel,thesurfaceandedgesoftheDmodelarecoloredandtheedgeoftheobjectissmoothSlide,displayacoloreddviewporticonUCSMethodofapplyingrealvisualstyleandDlineframesimilarityWhentheconceptisappliedtotheDmodel,thesurfaceandedgesoftheDmodelarecoloredandtheedgesoftheobjectarecoloredSlide,displayacoloreddviewporticonUCSMethodsofapplyingvisualconceptsandDlinesframesimilarityVisualStylesvisualstylemanagercommandTheavailablevisualstylesinthediagramselectavisualstyleinthelist(theselectedvisualstyleiswrappedinayellowboxSurround,theparameterareawilldisplaytherelevantparametersofthestyle,clickthelistbelowtheselectedvisualstyleappliedtoFrontviewportbutton,canbeappliedtothestyleofthecurrentviewportIntheparameterarea,youcanmodifythesurfacesettingsoftheselectedvisualstyle,settingsandedgesettingsandotherrelatedparametersNumber,therebymodifyingthevisualstyleInwhich,theedgepatternisspecifiedas"no",andthefastcontouredgeissetThe"visible"isspecifiedas"no",andtheshaderpatternisthesameastheoldversionofacad,createanewvisualstyleDeletevisualstylesSubtractdifferencesetUnionUnionErasedeleteUCSwUCSresetWedgewedgeConeconeSpheresphereCylindercylinderTorustorusPyramidpyramidBoxcuboidExtDstretching,thecommanddefaultstoperpendiculartothedirectionofthetwodimensionalgraphicsplanestretched,theinputtensileheight,thedefaultcreationBuildingacolumnwithoutshrinkageangleTwodimensionalgraphicsaregenerallylocatedintheUCSworkingplane,andthestretchingdirectionisalongtheZaxisDrawingheightPositivevalueThetensileheightisnegativeandnegativelytensilealongtheZaxisIfthetwoobjectisclosed,thestretchedbodyisathreedimensionalentity,andifthetwodimensionalobjectisnotclosed,thestretchedbodyisagridbodyThestretchingcommanddoesnotstretchtheobjectscontainedintheblock,norstretchthepolylinewithintersectingorselfcrossingsegmentsIfselectedThefixedpolylinehasawidththatignoresthewidthanddrawsthepolylinefromthecenterofthepolylineIftheselectedobjecthasThicknesswillignorethickness)accordingtothespecifiedheight

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