变速箱换挡叉的加工工艺及夹具设计中英文文献Word文档下载推荐.docx
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1英文文献翻译..............................................1
1.1Shiftgearbox............................................1
1.2变速箱的换挡方式......................................12
1英文文献翻译
1.1Shiftgearbox
Classificationusuallygearboxasfollows:
Manualtransmission
Thegeneralautomaticgearbox/commonautomatictransmissionwithtiptronic
CVTsteplessgearboxwithgearboxofthe/CVT
Dualclutchgearbox
Sequentialgearbox
(1)manualgearbox
Manualtransmission,alsoknownasmanualgear,Englishnameismanualtransmission,referredtoasMT,whichpushtheshiftlevertochangegearsmeshingpositioninsidethetransmission,changingthetransmissionratio,soastoachievethepurposeofspeed.Stepontheclutch,canmovetheshiftlever.
Theworkingprincipleofamanualgearbox
Themanualgearboxiscomposedofdifferentgearratioofthegeargroup,itsbasicprincipleisthroughthegeargroupworkindifferent,torealizethetransformationofgearratio.Asthekeylinkforpowerdistribution,transmissionmusthavethepowerinputshaftandtheoutputshaftofthebigtwo,togetherconstitutethetransmissiongear,isamanualtransmissionisthemostbasiccomponent.Thepowerinputisconnectedwiththeclutchshaftclutchtransmission,fromthepowertodirectlythroughtheinputshafttothegroup,thegearsetiscomposedofdifferentdiametergear,gearpowertransmissioneffectofdifferentproportionreachediscompletelydifferent,theusualshiftdrivingalsoreferstochangegearratio.
Next,letusthroughasimplemodeltotellyou,theprincipleofmanualgearboxshift.Belowisasimplestructuralmodelof3axis2speedgearbox.
Theinputshaft(green)isalsocalledthefirstshaft,connectedbyaclutchandengine,shaftandthegearisahardconnectedcomponents.Rediscalledtheintermediategearshaft.Enterthetwogearshaftandintermediateshaftisinconstantmeshstate,sowhentheinputshaftrotateswilldriveshaftrotation.Yellowistheoutputshaft,itisalsocalledthesecondshaftsandconnectedtothedriveshaft(onlyforrearwheeldrive,theprecursorisgenerallytwo),andthenthroughthedifferentialdrivevehicles.
Whenthewheelrotatesthesamewithsplineshafttorotatetogether,atthistime,bluegearshaftcanoccuronthesplineshaftrelativefreerotation.Therefore,theenginestops,andthewheelisrotated,thebluegearandshaftinthestationarystate,andthesplineshaftwithwheels.Theprincipleandtherearaxleofthebicycleflywheelissimilar.Bluegearandsplineshaftiscomposedofasleevetoconnect,sleevewithsplineshafttorotate,butalsocanbefreetoslideonthesplineshafttogear.
Withthese,theshiftingprocessisverygoodunderstanding,whenconnectingsleeveandabluegear,enginepowerwillbetransmittedtotheoutputshaftthroughtheshaft,atthesametime,bluegearleftinfreerotation,butbecausethereisnoandsleeveengaged,soitdoesnotaffectthesplineshaft.Ifthesleevebetweenthetwobluegear,thegearboxinneutralposition,thetwobluegearonthesplineshaftrotatefreely,withoutmutualinterference.
Principleofaconventional5speedmanualgearboxshiftisthesame,onlythegearboxstructureincreasedthenumberofsleeveandthegearsets,sothatithasmoregear.Butthereverseisbasedontheintermediateshaft(red)andtheoutputshaft(blue)isaddedbetweenageartoachieve.Duetotheincreaseofagear,thereversegearwillalwaysrotatetowardothergearintheoppositedirection.Thegearbecauseonlytochangegearrotationdirectionfunction,soitisalsocalledtheidler.
5blocktwoshafttransmissionstructure,theinputshaftandthedrivinggearareintegratedintoawhole,simplifiesthestructureandsavesspace
Inadditiontothetraditionalthreeaxismanualgearbox,thewidespreaduseofcarsistwoaxismanualtransmission,itsstructureandthethreeshaftofthegearboxissimilar,onlytheinputshaftandintermediateshaftasashaft,thereforehastheadvantagesofsimplestructure,smallsizeadvantages,inaddition,italsohasthemiddlegeartransmissionhighefficiency,andlownoisecharacteristics,soitismoresuitabletobetheprecursorhomecargeneralcartransmissionform,iscurrentlythemostwidelyused,itsshortcomingsisnotsetupdirectgear,transmissionandfilethanthedesigncannotbetoohigh.Whiledriving,threeshaftgearboxusedisstillthetraditional.
Manualgearboxingeneral,isthroughthepushrodisconnectedorcabletocontroltheshift.Pushrodshiftcontrolconnection,moredirectbutvibrationwillbelarge;
andthecabletypealthoughnovibration,buttheshiftisnotveryclear,itiseachtohavegoodandbad.Inadditiontoshiftthetwopuremechanicalcontrol,inaddition,andtheuseofelectronicshiftdeviceofmanualtransmission,whichcancombinethemeritsofpushandpulltheshiftbetweenthegood.Thiskindofgearboxintheshiftwhenthegearshiftlever,shiftingtothecorrespondinggear,thetransmissionwillbemotordrivethecorrespondingforkcontrolsleeveandthegearisengaged,sothatthereisnogearisnotclear,buttheshiftschedulecanbecontrolledintheidealrange.
So,agoodmanualtransmissionneedtohavewhatcharacteristic?
Thefirsttransmissionmusthavegoodgearhandle,eachgearpositionclear,havereasonablehorizontalandverticalstroke,intotheblockresistanceissmallandwithsuction.Whatismoreimportantis,thegeartoothbetweenthanarrangementmustbereasonable.Becauseeachgearpositionthandistribution,directlyaffectthecohesionpowervehiclesmovinginasmooth,usuallyrequirealowgearcaneffectivelyaccelerate,highblocktoachievehighspeedandefficient,andthedistancebetweeneachblockshouldbeuniform,otherwisewillbeveryeasytocausethechannelingshiftwhenthecar.
Analysisoftheadvantagesanddisadvantagesofmanualgearbox
AdvantagesObviously,whichissimpleinstructure,reliableperformance,manufacturingandmaintenancecostislow,andthetransmissionefficiencyishigh(theorywillbemorefuel-efficient),also,becauseitispuremechanicalcontrol,shiftreactionisfast,andcanbemoredirectexpressionofdriver'
sintention,andthereforemoredrivingpleasure,thesearetheadvantagesofmanualgearbox.Butcomparedtoautomatictransmission,itsoperationiscomplicated,andfrustrationingearswitchwhentheobviousdisadvantageisirreparable.
(2)automaticgearbox
AutomatictransmissionAT,thefullnameofAutoTransmission,whichiscomposedofhydraulictorqueconverter,composedofplanetarygearandhydrauliccontrolsystem,throughthehydraulictransmissionandgearcombinationtoachievevariablespeedmoment.
Comparedwiththemanualtransmission,automatictransmissionisverydifferentinstructureandusage.Themanualismainlyregulatedbydifferentgearcombinationtochangegear,andtheautomatictransmissionisthroughthehydraulictransmissionandgearcombinationtoachievethepurposeofchangingspeed.Hydraulictorqueconverterisoneofthemostcharacteristicoftheautomaticgearboxparts,whichiscomposedofapump,turbineandguidewheelandothercomponents,pumpwheelandturbineisacombinationofwork,throughtheliquidpumpwheeldrivestheturbinetorotate,andthewheelbetweenthepumpandturbinewheelthroughthereactionbetweenthepumpwheelandturbineimplementationthespeeddifferenceandimplementationofvariabletorquefunction,thedriver,youonlyneedtodifferentintensityslamthepedal,thegearboxcanautomaticallystoplifting.Sincethetorqueconverterautomatictransmissiontorquerangeisnotbigenough,soinalaterseriesseveralrowsofplanetarygeartoimproveefficiency,thehydrauliccontrolsystemwillchangewiththeenginetomanipulatetheplanetarygear,soastorealizetheautomatictransmissiontorque.Inordertomeetavarietyofrunningprocessneeds(suchasparking,reversing),automatictransmissionalsohassomemanualshiftleverposition,likethePblock(Rblock(anchor),aftertheblock),blockN(neutral),D(forward),block.
Fromtheperformancethatthemoregearautomaticgearbox,thecarintheprocessofrunningmoresmoothly,accelerationisbetter,andmorefuel-efficient.Inadditiontoprovidingacomfortabledrivingfeeling,automatictransmissionalsohasinsurmountabledefects.Dynamicautomatictransmissionresponseisnotdirectly,whichmakesitinthe"
drivingpleasure"
slightlyshortage.Inaddition,becauseoftheuseofhydraulictransmission,theautomatictransmissiongearboxtransmissionpowerloss.
Tiptronicautomatictransmission
Handsappearedgearboxisinordertoimprovetheautomaticgearboxandoperatingeconomyandincreasethesetting,lettheoriginalcomputerautomaticshifttimebackintothehandsofdrivers.Atthesametime,ifinthecitytrafficin,oryoucanalwaysswitchbacktoautomatic.
Atiptronicautomatictransmissionisactuallyautomaticgearbox,firstappearedinaPorsche911,manualgearboxelectroniccontrolsystemthroughthesimulationoftheoperationofamanualgearbox.Itappears,givingthedriveragreaterdegreeoffreedomintheoperation,canblockuptheblockingorshiftpaddlesonthesteeringwheeltochoosetheirowngearandshiftthetimingright,therebygreatlyimprovingthedrivingpleasure.
(3)CTVnon-polartransmission
CVT(ContinuouslyVariableTransmission),directtranslationisacontinuouslyvariabletransmission,whichiscontinuouslyvariabletransmission.Weoftensay,justasitsnameimpliesisthatthereisnoclearandspecificfile,whichoperateonsimilarautomaticgearbox,gearjumpprocessbutthe