CATIA V5 R18官方培训资料Lesson03.docx
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CATIA V5 R18官方培训资料Lesson03.docx
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CATIAV5R18官方培训资料Lesson03
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
BasicFeatures
InthislessonyouwilllearnhowtocreatebasicCATIAfeatures.
StudentNotes:
LessonContents:
CaseStudy:
BasicFeatures
DesignIntent
StagesintheProcess
DetermineaSuitableBaseFeature
CreatePadandPocketFeatures
CreateHoles
CreateFilletsandChamfers
Duration:
Approximately0.33day
CopyrightDASSAULTSYSTEMES3-1
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
BasicFeaturesinPartDesign
StudentNotes:
Partdesignincludesmanyfeaturesthathelptheusertocreateamodel.Themostcommon
featureswillbeintroducedinthislesson:
A.Pad
B.PocketA
C.Hole
D.FilletB
C
E.ChamferE
D
CopyrightDASSAULTSYSTEMES3-2
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
CaseStudy:
BasicFeatures
StudentNotes:
Thecasestudyforthislessonistheenginesupportusedinthedrillsupportassemblyas
isshownbelow.TheenginesupportispartoftheBlockEnginesub-assembly.Thefocus
ofthiscasestudyisthecreationofafeaturethatincorporatethedesignintentforthepart.Theenginesupportwillconsistofapad,pockets,ahole,fillets,andachamfer,andall
thesecanbeaccessedusingthePartDesignWorkbench.
CopyrightDASSAULTSYSTEMES3-3
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
DesignIntent
StudentNotes:
Theenginesupportmustmeetthefollowing
designintentrequirements:
VInternalloopsmustnotbecreatedinasketch.
•Eachelementonthismodelmustbecreatedasaseparatefeature.Thismakesiteasytomakemodificationsinthefuture.
VThefourcenterholesmustbecreatedasonefeature.
•Atfirst,oneholeiscreatedandthenitispatternedtocreatetheotherthreeholes.Sincetherequirementistohavethemcreatedasonefeature,apocketmustbeused.
VThefilletsandthechamfermayneedtoberemovedindownstreamapplications.
•Thefilletsandthechamfercannotbecreatedwithinthesketchedprofile;theymustbecreatedasseparatefeatures
CopyrightDASSAULTSYSTEMES3-4
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
StagesintheProcess
StudentNotes:
Usethefollowingstepstocreatetheenginesupport:
1.Determineasuitablebasefeature.
2.Createthepadandpocketfeatures.
3.Createholes.
4.Createfilletsandchamfers.
CopyrightDASSAULTSYSTEMES3-5
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
DetermineaSuitableBaseFeature
Inthissectionyouwilllearnhowtocreatethebasefeatureinamodel.
StudentNotes:
Usethefollowingsteps:
1.Determineasuitablebasefeature.
2.Createpadandpocketfeatures.
3.Createholes.
4.Createfilletsandchamfers.
CopyrightDASSAULTSYSTEMES3-6
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
PartDesignTerminology
StudentNotes:
Term
A.Part
B.PartBody
C.Feature
D.Pad
E.Pocket
F.Hole
G.Fillet
Description
Thedocumentcontainingthemodel.TheA
documentcanconsistofoneormorefeaturesandbodies.
AdefaultcontainercontainingthefeaturesB
thatmakeupapart.D
Elementsthatmakeupapart.TheycanbeE
basedonsketches(sketch-based)orfeatures
thatbuildonexistingelements(dress-upandF
transformation).Theycanalsobegeneratedfromsurfaces(surface-based).
Asolidfeaturecreatedbyextrudinga
G
sketchedprofile.
AfeaturethatremovesmaterialbyextrudingaC
H
sketchedprofile.
Afeaturethatremovesmaterialthroughtheextrusionofacircularprofile.
Acurvedsurfaceofaconstantorvariableradiusthatistangentto,andthatjoinstwosurfaces.Together,thesethreesurfacesformaninsidecorneroroutsidecorner.
H.Chamfer
Acutthroughthethicknessofthefeatureat
anangle,givingaslopingedge.
CopyrightDASSAULTSYSTEMES3-7
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
CreatingaBaseFeature
StudentNotes:
Itisimportanttobeginwithastrongbase
feature.Typically,thisfeaturerepresentstheprimaryshapeorthefoundationfromwhichothergeometriescanbeadded/removed.
Thebasefeatureusuallystartsfromasketchorasurfaceelement.Thislessondescribeshowtocreatethebasefeaturefromasketch.
CopyrightDASSAULTSYSTEMES3-8
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
SelectingaBaseFeature
StudentNotes:
Whenselectingabasefeature,itisrecommendedtoselectthebasicelementsthatconvey
theprimaryshapeorfunctionofthepart.Thisdoesnotmeanthelevelofdetailforabasefeaturemustbecompletelydefined.Forexample,fillets,holes,pockets,orotherfeaturesneednotbecreatedasapartofthebasefeaturesketch;thesecanbecreatedlaterasseparatefeatures..
Usethefollowingstepstoselectabasefeature:
1.Identifythepartfeatures.
2.Selectonefeaturetorepresentthebaseelement.
3.IdentifytheCATIAtools(features)neededtocreateit.
4.Createthefeature.
Whatwouldbethebasefeatureforthispart?
CopyrightDASSAULTSYSTEMES3-9
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
SelectingaBaseFeature-Exercise
StudentNotes:
Whatwouldbethebasefeatureforthefollowingparts?
CopyrightDASSAULTSYSTEMES3-10
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
SelectingaBaseFeature-Answers
StudentNotes:
Herearesomepossiblebasefeatures:
CopyrightDASSAULTSYSTEMES3-11
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
FeaturesthatAddorRemoveMaterial(1/2)
StudentNotes:
Oncethebasefeatureisselected,itneedsto
bedefinedbyaddingorremovingmaterialtocompletethedesign.Thefollowingisalistoffeaturesthataddmaterial:
•Pad(materialaddedbyextrudingasketch)
•Shaft(materialaddedbyrevolvingasketch)
•Rib
•Multi-sectionsSolid
•Stiffener
Pad
Shaft
CopyrightDASSAULTSYSTEMES3-12
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
FeaturesthatAddorRemoveMaterial(2/2)
StudentNotes:
Thefollowingisalistoffeaturesthatremovematerial:
•
Hole
•
Pocket(materialremovedbyextrudingasketch)
•
Groove(materialremovedbyrotatingasketch)
•
Slot
•
RemovedMulti-sectionsSolid
Hole
Groove
CopyrightDASSAULTSYSTEMES3-13
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
CreatePadandPocketFeatures
Inthissection,youwilllearnhowtocreatesimplepadsandpocketsfroma2Dprofile
(orsketch).
StudentNotes:
Usethefollowingsteps:
1.Determineasuitablebasefeature.
2.Createpadandpocketfeatures.
3.Createholes.
4.Createfilletsandchamfers.
CopyrightDASSAULTSYSTEMES3-14
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
CreatingPads
Apadisasketched-basedfeaturethatadds1
materialtoamodel.
Usethefollowingstepstocreateapadfeature:
1.Selecttheprofilesketch.2
2.ClickthePadicon.
3.Modifythepaddefinition.
4.ClickOKtocompletethefeature.Thepad3
featureisaddedtothespecificationtree.
Theprofilesketchismovedunderthepadinthetree.
StudentNotes:
54
CopyrightDASSAULTSYSTEMES3-15
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
CreatingaSimplePocket
StudentNotes:
Apocketisasketched-basedfeaturethat
removesmaterialfromamodel.Usethefollowingstepstocreateapocketfeature:
1.Selecttheprofilesketch.1
2.ClickthePocketicon.
3.Modifythepocketdefinition.
4.ClickOKtocompletethefeature.Thepocketfeatureisaddedtothespecificationtree.Theprofilesketchismovedunderthepocketinthetree.
23
5
4
CopyrightDASSAULTSYSTEMES3-16
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
PadandPocketLimits
StudentNotes:
Thelengthofapadorpocketcanbedefined
bydimensionsorwithrespecttoexisting3Dlimitingelements.Ifthepad/pocketfeatureisdefinedbyalimitingelement,itbecomesassociativetothatelement.
Thefollowingaretypesofdepthoptions:
A.DimensionB.UptoNextC.UptoLastD.UptoPlane
E.UptoSurface
Example
ABCDE
D
CopyrightDASSAULTSYSTEMES3-17
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
RestrictionsforPad/PocketProfileSketches
StudentNotes:
Ingeneral,theprofilesketchshouldconsistofconnectingentitiesthatformaclosedloop.
OpenloopprofilesketchescanbeusedonlywiththeThickoption.
ValidSketch
InvalidSketch
Notes
Multipleprofilesareacceptable,buttheycannotintersectunlesstheThickoptionisused.
Closed
Profile
OpenMultiple
ProfileOpen
Profile
Openprofilescannotbeusedasthebasefeatureofapart,unlesstheThickoptionisused.
CopyrightDASSAULTSYSTEMES3-18
CATIAV5Fundamentals-Lesson3:
BasicFeatures
STUDENTGUIDE
OpenProfiles
Openprofile
StudentNotes:
Openprofilescanbeusedtocreatepads,
pockets,orgroovefeatures.Considerusinganopenprofilewhentheexistinggeometryisavailabletolimitthenewfeature.
Usingtheexistinggeometrytore-limitafeatureeliminatestheneedtocreateandconstraintheadditionalsketchedgeometry.Alwaysensurethatthere-limitingfeatureisstable.Majormodificationsorremovalofthe
re-limitingfeaturewillcausetheprofiletofai
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