汽车离合器英语论文Word格式文档下载.docx
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汽车离合器英语论文Word格式文档下载.docx
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年级、专业:
2008级机械设计制造
及其自动化
******************
学号:
***************
指导教师:
孙书民徐红
Thedesignofdiaphragmspring
Abstract
Theclutchistheimportantcomponentsinautomobiletransmissionsystem,themainfunctionistoachieveiscutoffandtheenginetothepowertransmission,guaranteedthattheautomobilestartssmoothly,ensuredrivesystemwhentheshiftworksmoothlyandlimitthetransmissionsystemtowithstandthemaximumtorque,preventthetransmissionsystemoverload.Diaphragmspringclutchisinrecentyearsinthevehicleandlightvehicleusedinaclutch,thetorquecapacityoflargeandrelativelystable,convenientoperation,goodbalance,canbemassproduction,andtheresearchonithasbecomemoreandmoreimportant.
Keywords:
diaphragmspringclutch;
Diaphragmspringclutchoverview
Diaphragmspringclutchisinrecentyearsinthecarandlighttruckusedaclutch.Becauseofitsasapressurespring,canalsoplaytheseparationlevereffect,wherebytheclutchinordertosimplifythestructure,qualityreduction,andremarkablyreducetheaxialsizeofclutch.Secondly,asaresultofdiaphragmspringandpressurewiththecircumferentialcontact,sothatuniformdistributionofpressure.Inadditionduetothediaphragmspringwithnonlinearelasticproperties,itcanbeinthedrivendiscfrictionplateabrasion,springcanstillreliablytransferthetorqueoftheengine,withoutcausingslipawayfrom.Clutch,theclutchpedalmanipulationoflight,reducethelaborintensityofthedriver.Inaddition,becauseofthediaphragmisasymmetricparts,goodbalance,athighspeed,thepressingforcereducingrarely,buttheweekarrangedelasticclutchathighspeed,duetothecentrifugalforcewillgeneratetransversebending,springseveredrum,therebyreducingthepressureplatepressure,therebycausingtheclutchtotransmittorquecapacity.Ascanbeseen,forlightdiaphragmspringclutchdesignresearchfortheimprovementofautomobileclutchperformanceinallaspectshasveryimportantsignificance.
Asthehold-downspringcalleddiaphragmspring,ismadeofspringsteelstamped,with"
nobottomplate"
shapeofthetruncatedconeshapedthinwalldiaphragm,andthesmallendsurfaceonapluralityofradialgroove,toformanelasticlever,whiletheremainingslotscutendtruncatedconicalpartisaspringaction.Diaphragmspringarearrangedonthebothsidesofthesupportingring,andthelatterbymeansofafixedonaclutchcoversome(radialgroovescutinhalfnumberofrivetstoinstalllocation).Whentheclutchcoverboltfixedtotheflywheel,theflywheelclutchcovertotherearsupportring,diaphragmspringtogenerateelasticdeformation,theapexangleoftheconebecomeslarge,andevenalmostflatteneddiaphragmspring.Atthesametimethelargerendofthediaphragmspringpressureplatepressingforcegeneratedontheclutchisinthecoupling.Whentheclutchisdisengaged,theseparationbearingforwarddiaphragmspringpressurebeforethesupportingringasafulcrumofreversetaperedtransition,sothatthediaphragmspringaftertheshift,andbyseparatingthehookpullingthepressureshiftclutch.Diaphragmspringclutchhasmanyadvantages:
firstofall,asaresultofthediaphragmspringwithnonlinearcharacteristic,thereforethedesignofthefrictionplateabrasion,springpressureisnearlyconstant,andcanreducetheseparationwhentheclutchpedalforce,makethemanipulationoflight;
secondly,diaphragmspringclutchmountedpositiononthecenterlineoftheshaftaresymmetrical,sothepressingforceactuallyfromtheinfluenceofthecentrifugalforce,stableperformance,balanceor;
furthermore,diaphragmspringitselfandpressingspringandseparationoftheclutchlevereffect,simplestructure,lessnumberofparts,thequalitydecreasesobviouslyshortenstheaxialdimension;
inaddition,thediaphragmspringandthepressureplateistheentirecircumferentialcontact,sothatthepressureuniformdistribution,goodcontactfrictionfrictionplate,uniform,easytoachievegoodventilationandcooling.
Pulltypediaphragmspringclutchhastheadvantages
Comparedwithpush,pulltypediaphragmspringclutchhasmanyadvantages:
amiddlesupportingcomponents,anddonotsupportringoronlyasupportingring,thestructureissimple,compactstructure,fewerparts,qualityless;
pulltypediaphragmspringiscentralandtheplatenpressplatensizeinthesameconditionsthelargerdiameterdiaphragmspring,improvesthepressingforceandtheabilitytotransfertorque,anddoesnotincreasethepedalforce,inthetransmissionofthesametorque,canusethesmallsizestructure;
inthejointorseparatestate,theclutchcoverdeformationsmall,largestiffness,higherseparationefficiency;
pullleverageratiogreaterthanpush-downleverrat
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