中英文文献翻译带高速摄影系统的汽车离合器旋转破坏强度试验机Word文档格式.docx

中英文文献翻译带高速摄影系统的汽车离合器旋转破坏强度试验机Word文档格式.docx

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Keywords:

spintester　automobileclutch　highspeedphotography

Clutchbyglandassemblyandplatenassemblywhich,intheirrotationstrengthisthekeypartsofthequalityevaluationcarisanimportantindex,rulesandregulationsshouldbeaccelerationintheirstateoftherotatingspeedishigherthanspeedingstrengthtesttodeterminethesafetyandreliabilityoftheclutchdisc.Forexample,santanaclutchdiscassemblyanddrivenplatetotalchengduinordinarytemperaturerequirementsina=rad/s2accelerationof50accto12000r/min,andplatenassemblyalsorequiresinhightemperature（250℃）ata=rad/s2accelerationof50accto10000r/minwithoutfracture.Thesetestsrequireinthespecializedtestingmachine.

Atpresent,thedomesticisnoclutchassemblystrengthtestonthespecialequipment.Thispaperintroducestheauthordevelopedaverticalmulti-functionofclutchrotatingstrengthtester（seechart1）.Ithasastrongdriveability

（1）,cangenerateenoughacceleration,themaximumweight50kg,withthehighestspeed18000r/min,maximumacceleration20radPI/s2theclutchassemblystrengthtest;

（2）thestrongvibrationabsorbersystem,toabsorbtheclutchassemblyhighspeedrotatingvibrationenergy;

（3）thereliableandsteadyautomationcontrolsystemandabsolutesafetyofleadbrickprotectionrecessed;

（4）toobservetheclutchassemblyrotationexperimentprocessandtheruptureinstantaneousstatesurveillanceandhigh-speedphotographysystem.Toallsortsofclutchassembly,themachinecanstrengthtest,especiallyforhighspeedcanbefrequentlydodestructivetesting,useconvenient,safeandreliable.

Figure1clutchrotatingstrengthtesterphotos

1.Themainstructurecharacteristics

1.1Withrubberdampingbearingonthe"

flexibleshafttype

Thiskindoftestengineryduetofrequent,high-speeddestructivetesting,thehostaxisshouldbeabletocompletetheclutchassemblyrosequicklytothewholeprocessofdestruction,soweusedonthevertical"

withrubberdamperflexibleshaftof[1],thestructureseeFIG.2）.Duetotheverticalaxis,onesoftcriticalspeedislow,orderonly1800to2000r/minorso,makewholehigh-speedareaareonsupercriticalofsmoothstate.Atthesametimeinsoftshaftwithamiddlewith"

O"

typeofrubberringdampingbearingshaftsystem,whenthecriticalspeedorbecausetheclutchassemblybroughtseriousimbalancefierce,thevibrationdampingbearingcanabsorbvibrationenergy,attenuationshaftvibration[2],ensuretheclutchassemblycontinuetoriseuntilthecompletedestruction,ensurespeedhigh-speeddamagetest.Thisstructureissimple,easytoadjust,dampingrange.Inordertopreventtheclutchassemblydamagetime,greatinstantaneousvibrationenergycauseshaftandthelowerthedestructionofthetransmissionsystem,inthegentleshaftwithalimitbearing,headtopreventsoftshaftbendingbigandthebottomofthedriveshaftdamagecomponents.Softaxisadoptplug-ininstallation,whentheclutchassembly,themostseriousdestructionisreplacedthesoftshaft,headbenttothewholemachinedidn'

thaveanyeffect,operationloadingandunloadingisveryconvenient,andensurethetestercanfrequentlyintheclutchassemblydestructivetest.Theverticalaxis,facilitate"

onthecoverfromtheWindowsofthetestingprocessandobservespecimensofinstallationandremoval.

Figure2rubberdamperwithflexibleshaft

1.2Theclutchassemblydamagemomentsofhigh-speedphotographysystem

Theclutchassemblybymanypartsassemblyandbecome,thepartsqualityisdirectlyrelatedtothequalityoftheassembly.Ifcanthroughthehigh-speedstrengthtestfindassemblypartstheweaklinks,hadbetterbetobeintestchambertotakethepartsassemblybydeformationanddestructionandyieldspreadtothewholeprocessof,thatwillbeverysignificant.Althoughcurrentlynotatacloserangeinadvance,donotknowwhentheclutchassemblyofthedamagehappenedproducedhighspeedthewholeprocessofdestruction,buttheycantaketodestroythemomentalonephotos.

Foreigniswidelyacceptedinthespecimenoutsidetriggercoilrotorset,astherotorflycrack,debrisflyingoutofline,mettriggertriggercircuittriggeredbyhighspeedcamerashutteropen,tookadamagetheimageoftherotormoment.Obviouslythisdesignrequirementsmusthavetakenthecameraveryhighspeed.Forexampletheclutchassemblydestructionspeedthan10000r/min,thelinearvelocityinthe200m/sabove,ifwanttotakecleardebrisflyingoutoftheinstantaneousmovementconditionwhen,capturedfragmentsofthedistancefromthe2mmmovingimages.So,thecameraatleastshouldhavet=2mm/（200m/s）=1x10-5sshootingspeed,forordinarycameraitisclearlythedeficits.

Inordertosolvethisproblem,wedevelopedacommoncameraswiththehigh-speedphotographyinthetechnology,withtheclutchhigh-speedstrengthtestmachine,tooktheclutchassemblydestructionofphotographs.ThemomentThehigh-speedphotographyworkprincipleofthesystemisshowninfigure3.Thespecificpracticesforordinarycamera,willcovertheWindowsintestingmachineinthedarknessofthetestchamberoutside,openshutter,inadvanceforshootingstate.Atthesametime,addtherearcoveroutsidethewindowbetweenthetwosteelballmusthighpressureofthecapacitorvoltage.Whentheclutchassembly,highspeedrotatingpartsflycrackdamage,cutofftheassemblyline,theperipheryofthetriggerthatsetuplightsourcelineworktriggerpin,triggeringatriggerpulse,sothattheairbetweentwosteelball,asteelballcapacitorinionizationproducedstrong,betweendischargepulselightsource,thenthecameranarrowphotographicplate,gettheclutchassemblydestructionofphotographs.ThemomentThetechnologyofthemethodissimple,saveexpensivehigh-speedcameras,theshootingaccuracyishigh.

Figure3high-speedphotographysystemworkprinciplediagram

2.Experimentalstudy

Weinthetestingmachinetoclutchcoverplateassemblyandmadealargedestructivetesting.Nowtothesantanaglandassemblydamagetestasanexample.First,takethesantanaclutchcoverassemblystateofrest;

Then,theglandassembly,andtodestroythedamageprocessusinghigh-speedphotographysystemtoshoot,havethefollowingresults:

（1）santanaclutchcoverassemblyinspeedfor11560r/min,glandspringofflyout,cutoffthetriggercoil,tookahigh-speedphotographyphotos（seechart4）,photosaretherightoffabout20°

positiononaspringoftheflyingoutoftheshadows.Afterparkingthetrayfoundnotdamage,butfindspringofcrack,theobviousskeletonspringofcentrifugalforcealongtheroleinthefirstbendingflyoutbroken.

（2）thisglandassemblycontinuetoriseinspeedforspeedtest,14010r/minhappenedwhenthetraydestruction,likeonhigh-speedphotographyphotos（seechart5）.Photosofthemomentbydamage,thewholeclutchcovervisibleassemblyglandproducesseriouswarpingdeformation,radialonturnovertheclose（seephoto）andcutoffthetriggercoil.Asglandwarping,clutchthetrayimbalancesflycrackdamage.Butdidnotseetheglandcastironrings（coverpartscan'

tphotographed）flyoutoftheshadowofthefracture.

（3）fromglandassemblydestroyedthecrackofphotosskeleton（seefigure6）cansee,glandseriouswarpingdeformationinspringofinstallation,thegaps,butpulledglandandwithoutbreakingintoseveralpieces,althoughglandlowerpartofthecastironringhasfracturedintosevenpieces,butfoundnoglandinsidesurface,castironringspiecesthetraceoftheimpact.

Theresultshowsthesantanacarclutchcoverthefailureprocessoftheinstantaneousassemblyforlocalparts,（springof）flyout-glandseriouswarpingdeformation,inlocalweaksectionandpulledinthebottomoftheglandcastironringsandthewholeglandassemblyfracturefailure.

Thistesterhasbeenputintouseoffactorythreeyears,becausethefunctionisallready,performancestability,pricecheap,andsolvetheclutchalotofdetection,thedevelopment,andtheresearchquestion,isexpectedtoreplacetheimported,application.

Figure4glandassemblyspringofflyoutofthemomentphotos

Figure5glandassemblymomentsofphotos.Damage

Figure6glandassemblyafterdamageremainsofthephoto

Reference

[1]WuDaWen."

typerubberringexperimentalstudyofthedynamiccharacteristicsofthemaster'

sdegreethesis:

[Master'

sdegreethesis].Hangzhou,zhejianguniversity,1998

[2]QianLiXin.Ultra-highspeedrotortestdevelopmentspeedingsomeissuesofthestudy:

[Ph.D.Thesis].Hangzhou,zhejianguniversity,1998

带高速摄影系统的汽车离合器旋转破坏强度试验机

摘要：

提供了一种带高速摄影系统的汽车离合器旋转破坏强度试验机，该机可以频繁地做离合器总成的破坏性试验，并可拍摄到离合器总成破坏瞬间的独幅照片，以利找出总成零件的薄弱环节。

关键词：

旋转破坏性试验　试验机　汽车离合器　高速摄影

汽车离合器由压盖总成和从动盘总成组成，它们的旋转强度是评价汽车关键零件质量的重要指标，规范规定它们都应在加速度状态下进行高于工作转速的超速强度试验，以确定离合器盘的安全性和可靠性。

例如，桑塔纳轿车的离合器压盘总成与从动盘总成都要求在常温下以a=50rad/s2的加速度升速至12000r/min,而从动盘总成还要求在高温（250℃）下以a=50rad/s2的加速度升速至10000r/min而不发生破裂。

这些试验都要求在专门的试验机上进行。

　　目前，国内尚缺少进行汽车离合器总成强度试验的专用设备。

本文介绍笔者研制的一种立式多功能的汽车离合器旋转强度试验机（见图1）。

它具有①较强的驱动能力，可产生足够大的加速度，进行最大重量