外文翻譯畢業(yè)設計題目：橢圓齒輪行星系大株距植苗機構的設計原文1：正齒行星輪分插機構橢圓齒輪的計算機輔助設計譯文1:ComputerAidedDesignofOvalGearofSeparatingplantingMechanismwithPlanetaryGearsofNon-eccentricity原文2：缽苗移栽機橢圓齒輪行星系植苗機構運動學建模與分析譯文2：KinematicsmodelingandanalysisoftransplantingmechanismwithplanetaryellipticgearsforpotseedlingtransplanterComputerAidedDesignofOvalGearofSeparatingplantingMechanismwithPlanetaryGearsofNon-eccentricityAbstract：SeparatingPlantingMechanismwithPlanetaryGearsofNon-EccentricityisanewtypemechanismThemechanismisconstitutedbythreepartstheyareovalgeartransmissiondivision，planetarygeartransmissiondivisionandplantthearmBasicthoughtofdesigningisadoptingovalgeartransmission，choicethefitconstructionparametertoensureAsymmetrytransmissionratioandscrewtheanglerelationoftherequestoftransplantriceseedlingThethesiswillexpatiatehowtocomputergeometricparemeterofovalgear，analysistransmissioncharacterofovalgear，andensuretransmissionratioandAngleofpressureintheperiodofEngagementofovalgear.Keywords：agriculturalengineering；separating-plantingmechanismwithplanetarygearsofnon-eccentricity；design；ovalgear；computeraideddesign1.TransplantingMechanismwithPlanetaryGearsworksAsshowninFigure1,thediagramofThePlanetaryGearsricetransplantertransplantingmechanismmakeupwithfourcongruenttheZhengyuangearand3congruentovalgear.3rotationcenteroftheovalgearareinthefocusoftheovalear,Theyhavesameinitialphase.Thecenterovalgear(3)(alsocalledsunwheel)fixed.Gearbox(equivalentcarrier)isdrivedbythecentralaxis,theequivalentofaprimemoverpiecesrotatearoundtherotationcenter0ofthesunwheel.Sincethetwoovalgears(3)and(4)engagesthatcausedthechangeofthetransmissionratio,sothetwoplanetscirclegearthatsymmetricalarrangementareswingingbackandforth,seedlingclawmoveattherequiredposture(Angulardisplacementandtrajectory).Thebasicideaofthedesignisusethenon-uniformdriveofovalgearpairandselecttheappropriatestructuralparameterstofindtheworktrajectory,thetakeseedlingsangleandtheplantinganglethatmeetplantingrequirements.1.Planetarycirculargear2.Intermediatecirculargear3Centralovalgear4.Intermediateovalgear5.SeedlingneedleFigure1aschematicdiagramofplanetarygearsTransplantingMechanism2.OvalgearrotationrelationshipFigures2and3asapairofcongruentovalgearmeshingrelationshipdiagramFigure2istheinitialpositionoftheellipticalgeardrivecapstandouniformmotion,whentheonepairofcongruentovalgear,therotationalspeedofthewheelfrommovingperiodicallychanges.Thus,thegeometriccharacteristicsoftheovalgearonlywitheccentricityandfixedaxisrotationrelationshipofthegeartrainandapairoflargereccentricitytheovalgearVicecornerrelationsarequite.Therefore,appropriatelychangingtheeccentricityoftheellipticalgearscanmeettherequirementsoftransplantingangularrelationship.EllipticalgeardrivetransmissionnaturehaslaidatheoreticalfoundationforthisarticleTransplantingMechanismovalgeardesignofplanetarygears.Figure2startingpositionFigure3rotatedposition3.Ovalgeardesign3.1OvalgearpitchcurvearclengthcalculationTheoriginofthepolarcoordinateistakenattheovallowerfocus0,tothegeometriccenteroftheellipseO,asthecoordinateoriginforaCartesiancoordinatesystemOxyaxisintheminoraxisdirection,Yaxisinthelongaxis.ThatOcenter,themajoraxisoftheellipseradiusfortwocirclesradiusaandminorradiusb.Figure4showsthetodiameterOiandthex-axisisy,itistheintersectionofthesetwocircles,respectivelybyi,iandjforthelineparalleltothexaxis,asalineparalleltotheyaxisbyjthetwolinesin