一种新型无级变速器的构想与运动仿真.pdf

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1、机床与液压Sep．2013HydromechatronicsEngineeringVo1．41No．18DOI：10．3969／j．issn．1001-3881．2013．18．006TheConceptionandKinematicSimulationofaCamMechanismContinuouslyVariableTransmissionZHANGJinxi，TANFen，CAIWeiChonqingUniversityofTechnology，Chonqing400054，ChinaAbstract：Thispaperputsforwardaconception

2、ofanewtypeofmechanicalsteplesstransmissionwithasimplestructure，whichcanrealizesteptessspeedchangethroughtheuseofspacialcon。calcammechanism，andsteplessspeedchangecouldbeachievedbythecontinuousaxialchan。gesofthecontactpositionofswinglinksandtheconicalcam．Diferentvariationspeedratioscanbeobt

3、ainedbychangingthelengthortaperoftheconicalcam．AdesireduniformrotationcanbeobtainedbyprocessingkinematicsimulationandanalysisforthemodelthroughsoftwareAD。AMS．Thisconceptionmayprovideanewthoughtforthelaterstudyofcontinuouslyvariabletransmission．Keywords：continuouslyvariabletransmission(C、厂

4、r)，conicalcam，variationspeedratio，kine。maticsimulation1．Introduction2．StructureContinuouslyVariableTransmission(CVT)isThestructureofthenewmechanicalsteplessoneofthemostpromisingresearchareainthefieldoftransmissiondesignedinthispaperisshowninFig．driveatpresent，itcanmakeenginesandtransmis-1

5、，itismainlycomposedofthreeparts-spacialconi—sionsworkinthebestmatchingcondition，andpro-calcammechanism．parallelogrammechanismando—longtheservicelifeofengineseffectively．Currently，verrunningclutch．Therearethreegroupsofthemechanicalsteplesstransmissionisthemostpopularmechanismwhichconsistso

6、fswinglink．splinetypeofCVT，includingfrictiontype，chaintype，shaft，parallelogrammechanismandoverrunningbelttypeandpulsingtype[1]．Thestudyofmechan。clutch，andtheyarearrangedevenlywithanangularicalsteplesstransmissioninforeigncountrieshasadistanceof120degreesaroundthecamshaft．longhistory．butst

7、artedrelatively1ateinChina，sothereisstillacertaingaponthekeytechnologybe-tweenChinaandforeigncountries[2]．Inthispa-per．anewstructureofmechanicalsteplesstransmis—sionispresented．anditcantheoreticallyobtainau—niformoutputmovement．Byprocessingkinematicsimulationthrough