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外文翻译--凸轮.doc

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外文翻译--凸轮.doc

6附录61英文原文CAMSVARIOUSMOTIONSCANBEPRODUCEDBYTHEACTIONOFACAMAGAINSTAFOLLOWERMAMYTIMINGDEVICESAREOPERATEDBYCANACTIONTHEPURPOSEOFANDYCAMISTOPRODUCEADISPLACEMENTOFITSFOLLOWER;ASECONDARYFOLLOWERISOFTENUSEDTOPRODUCEADDITIONALDISPLACEMENTINANOTHERLOCATIONTHEMOSTPOPULARTYPEISTHEPLATECAMTHECYLINDRICALTYPEISUSEDTOTRANSMITLINEARMOTIONTOAFOLLOWERASTHECAMROTATESTHREEDIMENSIONALCAMARESOMETIMESUSED;THESEPROVIDESOMEUNUSUALFOLLOWERMOTIONS,BUTALSOMAKEFOLLOWERDESIGNDIFFICULTTHECAMSHAFTINTHEAUTOMOTIVEENGINEILLUSTRATESASIMPLEBUTIMPORTANTAPPLICATIONOFALATECAMTHECAMASSEMBLIESINAUTOMATICRECORDPLAYERSILLUSTRATEASOMEWHATMORECOMPLEXAPPLICATIONCAMPROFILESAREACCURATELYCONSTRUCTEDBYEITHERPRAPHICALORMATHEMATICALMETHODSTHETRANSITIOMFROMDEVELOPMENTDRAWINGSTOWORKINGSHOPDRAWINGCANBEMADEINSEVERALWAYS1MAKEAFULLSCALETEMPLATETHISISDESIRABLEFROMTHEMANUFACTURINGSTANDPOINT,BUTITWILLNOTGUARANTEEACCURATECAMPROFILES2USERADIALDIMENSIONSTHISISFAIRLYACCURATE,BUTSOMETIMESPRODUCESLAYOUTPROBLEMSINTHESHOP3USECOORDINATEDIMENSIONINGTHISPROCEDUREWILLENSUREACCURACYINSELECRINGONEOFTHESEMETHODS,ONESHOULDCONSIDERTHEFUNCTIONOFTHECAMINTERMSOFDESIREDPRECISENESSBECAUSETHECAMWORKOUTLINEALREADYDETERMINED,THEREFORETHECAMSTRUCTURALDESIGNMAINLYWASDETERMINESTHECURVEOUTLINEAXIALTHICKNESSANDTHECAMANDTHEDRIVESHAFTCONNECTIONWAYWHENTHEWORKLOADCOMPARESTHEHOUR,CURVEOUTLINEAXIALTHICKNESSGENERALLYTAKESFORTHEOUTLINECURVEBIGGESTRADIUSOFVECTOR1,/10~/5;REGARDINGASTRESSBIGGERIMPORTANTSITUATION,MUSTWITHCARRYONTHEDESIGNACCORDINGTOTHECAMCONTOURSURFACEFROMTHECONTACTINTENSITYWHENDETERMINATIONCAMANDDRIVESHAFTJOINTWAY,SHOULDSYNTHESIZETHECONSIDERATIONCAMTHEASSEMBLINGANDDISMANTLING,THEADJUSTMENTANDFIRMLYGRADESTHEQUESTIONREGARDINGIMPLEMENTINGAGENCYMOREEQUIPMENT,BETWEENITSEACHEXECUTIONCOMPONENTMOVEMENTCOORDINATIONUSUALLYDETERMINEDBYTHECYCLEOFMOTIONCHART,THEREFOREINASSEMBLYCAMGEARTIME,THECAMCONTOURCURVEINITIALSTATIONPUSHESREGULATIONSTARTSTHERELATIVEPOSITIONTOHAVEACCORDINGTOTHECYCLEOFMOTIONCHARTTOCARRYONTHEADJUSTMENT,GUARANTEESEACHEXECUTIONCOMPONENTTOBEABLEACCORDINGTOTHEPRESETSEQUENCESYNCHRONIZEDACTIONTHEREFORE,REQUESTSTHECAMINTHESTRUCTURALDESIGNTOBEABLETOBEOPPOSITETOTHEDRIVESHAFTCARRIESONTHEROTATIONALONGTHECIRCUMFERENCEDIRECTION,ANDRELIABLYPERFORMSFIXEDLYTHESIMPLESTMETHODUSESTHECLAMPINGSCREWNAILFIXEDCAM,ORWITHCLAMPINGSCREWNAILPREFIXED,AFTERTREATSADJUSTSUSESTHEPINTOBEFIXEDAGAINFROMSTRUCTURALDESIGNFROMSTRUCTUREWHENDESIGNMUSTCONSIDERFROMTHEGUIDANCEANDPREVENTEDREVOLVESFROMMOVEMENTRULEDESIGNINVOLVESMANYASPECTSFROMTHEMOVEMENTRULEDESIGNTHEQUESTIONS,BESIDESCONSIDERATIONRIGIDITYIMPACTANDFLEXIBLEIMPACT,BUTALSOSHOULDMAXIMUMSPEEDVMAXWHICHHASTOEACHKINDOFMOVEMENTRULE,MAXIMUMACCELERATIONAMAXANDITSTHEINFLUENCEPERFORMSTHECOMPARISON1VMAXBIGGER,THENMOMENTUMMVISBIGGERIFFROMISSUDDENLYPREVENTED,THEOVERSIZEDMOMENTUMCANCAUSETHEENORMOUSIMPULSE,ENDANGERSTHEEQUIPMENTANDTHEPERSONALSAFETYTHEREFORE,WHENISBIGGERFROMTHEQUALITY,INORDERTOREDUCETHEMOMENTUM,SHOULDCHOOSETHEVMAXVALUESMALLERMOVEMENTRULE2AMAXBIGGER,ISBIGGERFUNCTIONINHIGHVICECONTACTPLACESTRESSBIGGER,THEORGANIZATIONINTENSITYANDTHEWEARRESISTANTREQUESTISALSOHIGHERREGARDINGHIGHSPEEDCAM,INORDERTOREDUCETHEHARM,SHOULDCHOOSETHEAMAXVALUESMALLERMOVEMENTRULEFIRSTSTATESSEVERALKINDOFMOVEMENTSRULESVMAX,AMAX,THEIMPACTCHARACTERISTICANDTHESUITABLESITUATIONFOLLOWINGTABLEREGARDINGSWINGSFROMTHECAMGEAR,ITSMOVEMENTGRAPHXCOORDINATEEXPRESSIONCAMCORNER,YCOORDINATETHENSEPARATELYEXPRESSESFROM,ANGULARSPEEDANDANGLEACCELERATIONTHISKINDOFMOVEMENTGRAPHHASTHESTATEOFMOTIONANDABOVEISSAMEFROMSTRUCTURALDESIGNFROMSTRUCTUREWHENDESIGNMUSTCONSIDERFROMTHEGUIDANCEANDPREVENTEDREVOLVESFROMMOVEMENTRULEDESIGNTHECAMGEARDESIGNBASICQUESTION1CAMGEARSTYPECHOICE,THEDEFINITECAMSHAPE,WITHFROMMAINTAINSTHEHIGHVICECONTACTFROMTHESHAPEANDTHEMOVEMENTFORMANDTHECAMTHEWAY2FROMTHEMOVEMENTRULEDESIGN,ACCORDINGTOTHEAPPLICATIONSITUATIONTOFROMTHETRAVELLINGSCHEDULEANDTHESTATEOFMOTIONREQUEST,DETERMINESFROMTHEMOVEMENTRULE3CAMGEARSBASICPARAMETERDESIGN,DETERMINESFROMTHETRAVELLINGSCHEDULE,VARIOUSMOVEMENTSANGLE,THECAMRADIUS,,THEROLLERRADIUS,THECENTERDISTANCE,FROMTHELENGTHANDSOON4CAMCONTOURSCURVEDESIGN5CAMGEARSBEARINGCAPACITYCOMPUTATION6CAMGEARSSTRUCTURALDESIGN,PLANORGANIZATIONASSEMBLYDRAWINGANDVARIOUSCOMPONENTSSHOPDRAWINGFROMSTRUCTURALDESIGNFROMSTRUCTUREWHENDESIGNMUSTCONSIDERFROMTHEGUIDANCEANDPREVENTEDREVOLVESFROMMOVEMENTRULEDESIGNTHECAMGEARDESIGNBASICQUESTION1CAMGEARSTYPECHOICE,THEDEFINITECAMSHAPE,WITHFROMMAINTAINSTHEHIGHVICECONTACTFROMTHESHAPEANDTHEMOVEMENTFORMANDTHECAMTHEWAY2FROMTHEMOVEMENTRULEDESIGN,ACCORDINGTOTHEAPPLICATIONSITUATIONTOFROMTHETRAVELLINGSCHEDULEANDTHEMOVEMENT1,THECAMGEARAPPLICATIONCAMGEARISINCLUDESTHECAMTHEHIGHVICEORGANIZATION,THECAMGEARHASTHESTRUCTURETOBESIMPLE,MAYACCURATELYREALIZEREQUESTMERITANDSOONMOVEMENTRULE,THUSOBTAINSTHEWIDESPREADAPPLICATIONINTHEINDUSTRIALPRODUCTION,SPECIALLYAUTOMATICDEVICEANDINTHEAUTOMATICCONTROLDEVICE,OBTAINSTHEWIDESPREADAPPLICATION2ND,THECAMGEARCLASSIFICATIONACCORDINGTOTWOMOVESTHERELATIVEMOTIONCHARACTERISTICCLASSIFICATIONBETWEENTHECOMPONENT1THEPLANECAMGEAR1THEDISKCAM;2TRANSLATIONCAM2SPACECAMGEARACCORDINGTOFROMMOVEMENTVICEELEMENTSHAPECLASSIFICATION1APEXFROM;2ROLLERFROM3FLATBASEFROMNOTECLASSIFIESTHISPARTOFCONTENTWHENTHEINTRODUCTIONCAMGEAR,SHOULDPOINTOUTEACHKINDOFCAMGEARTHEGOODANDBADPOINTSANDITSTHEADAPTIONSITUATION,SHOWEDEACHKINDOFCAMGEARTHEINNERLINK,WILLBUILDTHEFOUNDATIONFORTHELATERTRANSLATIONCAMANDTHECOLUMNCAMCONTOURDESIGN3RD,THETHROWOUTLEVERMOVEMENTRULE1THECAMGEARCYCLEOFMOTIONANDTHEBASICTERMTERMINOLOGYPUSHTHEREGULATIONMOVEMENTANGLEWITHFROMPUSHESTHECAMCORNERWHICHTHEREGULATIONCORRESPONDS;FARSTOPSTHEANGLEWITHFROMFARRESTSTHECAMCORNERWHICHTHEREGULATIONCORRESPONDS;RETURNTRIPMOVEMENTANGLEWITHCAMCORNERWHICHCORRESPONDSFROMTHERETURNTRIP;NEARLYSTOPSTHEANGLEWITHFROMNEARLYRESTSTHECAMCORNERWHICHTHEREGULATIONCORRESPONDS;CAMTAKETHECAMAXLECENTERASTHECENTEROFACIRCLE,TAKEITSOUTLINESLIGHTLYTODIAMETERR0ASTHERADIUSCIRCLE;FROMRAVELLINGSCHEDULEINPUSHESINTHEREGULATIONORTHERETURNTRIPFROMTHEBIGGESTDISPLACEMENT,INDICATEDWITHH;THECAMCENTEROFROTATIONWITHFROMGUIDESWAYTHEBIASDISTANCE,INDICATEDWITHETYPESOFCAMSPLATECAMSARESIMPLETOFABRICATETHEFOLLOWERCANBEMOVEDINVARIOUSPATTERNSWITHVARIOUSRISE/FALLRATIOSMOTIONSHOULDBECONTROLLEDTOAVOIDABRUPTCHANGESINFORCETRANSMITTEDFROMTHECAMTOTHEFOLLOWERONESHOULDCAREFULLYDETERMINEHORIZONTALFORCECOMPONENTS,SINCETHESEPRESENTPROBLEMSDESIGNINGTHEFOLLOWERASSEMBLYGUIDECRITICALREACTIONSOCCURATPOINTSAANDBTHESEREACTIONVALUESMUSTBECOMPUTEDTHERELATIVEVERTICALPOSITIONOFPOINTAWITHRESPECTTOBNEEDSTOBERAISEDIFTHEREACTIONVALUEATBISEXCESSIVETHEPOSITIONOFBSHOULDBEASCLOSETOCAMASPOSSIBLETOMINIMIZEFLEXUREINTHEROLLERFOLLOWERSUPPORTTHISTYPEPRODUCESRECIPROCATINGMOTIONINTHEFOLLOWERAGAIN,DORCESNEEDTOBEDETERMINEDANDDIMENSIONSCHOSENSOASTOAVOIDEXCESSIVECOMPONENTSIZESATAPEREDROLLERFOLLOWERISFREQUENTLYEMPLOYED;THEGROOVEINTHEPERIPHERYOFTHECAMSHOULDBESHAPEDTOACCOMMODATETHEFOLLOWERTHISTYPEOFCAMISEXPENSIVETOPRODUCETHECYLINDRICALCAMHASTWOOUTSTANDINGFEATURESONEISTHEFACTTHATTHECAMISPOSITIVEACTIONGNOUTSIDEFORCESSUCHASGRAVITYORSPRINGACTIONARENEEDEDTOHOLDTHEFOLLOWERAGAINSTTHEWORKINGSURFACEOFTHECAMTHESECONDFEATUREISTHEFACTTHATTHEFOLLOWERCANMOVETHROUGHACOMPLETECYCLEINTHECOURSEOFSEVERALREVOLUTIONSOFTHECAMFOREXAMPLE,ITISPOSSIBLETODESIGNTHECAMSOTHEFOLLOWERCOULDMOVEFROMASTARTINGPOSITIONATTHELEFTENDTOTHEEXTREMERIGHTPOSITIONINTHREEREVOLUTIONSORMORE,THENTHESTARTINGPOSITIONINTWOREVOLUTIONSOTHERVARIATIONSAREPOSSIBLEATRANSLATIONCAMISILLUSTRATEDINTHEFIGURESHOWNTHECAMRECIPROCATESHORIZONTALLYANDTHEFOLLOWERMOVESUPANDDOWNAPIVOTEDFOLLOWERCANBEUSEDWITHTHISTYPETHETRANSLATIONCAMCANBEMADEPOSITIVEBYPROVIDINGAGUIDEDPLATEWITHANINCLINEDSLOTFORTHECAM;THESLOTCAMTHENENGAGEAPINORROLLERONAGUIDED

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