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1、ModelingCamsandSlotsinIntegratedMotionCams&SlotsIntroductionYoucancreatecamsandslotsinMotionandanalyzethedynamicsofacamandcam-follower,andaslotandslot-follower.Afteryouapplyconnectionsandmeasurestoyourmechanism,youcananalyzefordifferentinterests.Forexample,youcanseeifacam-followerstaysincon
2、tactwiththecam,aswellasanalyzeforcontactandfrictionforce.Motioncreatestwotypesofcams—rigidandcompliant.Forbothtypesyoucananalyzetheinteractionbetween,andmotionof,acamanditsfollower.•Rigidcamsalmostalwaysrunfasterthancompliantcams,andareusefulforlowfrictionslidingcontactbetweentwosurfacestha
3、tareforcedtoremaininconstantcontact.Rigidcamsdonotneedmaterialproperties.•Compliantcamsareusefulwhensurfaceslidingfrictionisimportant,whenfollowerlift-offmayoccur,orwhenmaterialdeformationplaysanimportantrole.Usecompliantcamstomodelmechanismsthathaveintermittentcontactbetweencam-likesurface
4、s.Therearetwowaystocreatecams.YoucaneitheruseexistingPro/ENGI-NEERgeometry,oryoucansynthesizeacamprofilefromwhichyoucancre-atethegeometry.Bothmethodsaredescribedinthefollowingexercises.CamsandSlots-1Youcanimportcamgeometryfromdatathatincludesadefinedcamshape.Or,ifyouknowthedesiredfollowermo
5、tion,youcanusethesamedatatosyn-thesizeacamprofile.WithMotionyoucanturnacurveintoaslotandaddaslot-followerconnec-tionthatallowsyoutosimulatethemotionofabodyinagroove.Thisprocessinvolvesaddingaslotdefinitiontoacurve,assigningaconnectionbetweenaslotandafollower,anddefiningmeasuresthatenableyou
6、tomeasurequanti-tiesofinterestforyourmechanism,suchascontactforce.ExerciseOverviewTherearetwodifferentstrategiesforcreatingcamsforyourmechanism.HowyoudevelopedyourmodelbeforeenteringMotiondeterminesthestrategyyouuse.IfyoucreatedgeometryforcamsusingPro/ENGINEERsketchingcapabili-ties,younowne
7、edtodefinethegeometryasacam.Ifyouarecreatingacom-pliantcam,youmustalsoassignmaterialproperties.Onceyoudothis,youcanthendefinethecam-followerconnectionandcreatemeasures.Ifyouhavenotyetcreatedgeometryforcams,theprocessofcreatingcamsinMotionisathree-steppro
