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外文翻译--曲柄滑块机构及其特性研究.doc

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外文翻译--曲柄滑块机构及其特性研究.doc

1INTRODUCTIONWITHINDUSTRIALDEVELOPMENT,DIFFERENTSPECIFICATIONSOFTHECRANKSLIDERMECHANISMAREAPPLIEDTOMOREMACHINERYITISINTHEMACHINERYMANUFACTURINGINDUSTRYANDOTHERINDUSTRIALPRODUCTIONOFMOREANDMORESIGNIFICANTROLE,SUCHASINAUTOMOBILE,AGRICULTURALMACHINERY,ELECTRONICS,MEDICALEQUIPMENT,DEFENSE,AEROSPACEANDINDUSTRIALSECTORSANDOTHERDAILYNECESSITIESHAVEAWIDERANGEOFAPPLICATIONSTHUSINCREASINGTHEDEGREEOFAUTOMATIONMACHINERY,REDUCELABORINTENSITYANDIMPROVEWORKINGCONDITIONSAREINSEPARABLEFROMTHESTUDYOFSLIDERCRANKMECHANISMSLIDERCRANKMECHANISMISIMPORTANTINTHEPRESSWITHINTHEMAINBODYTHELATENINETEENTHCENTURYTHEREWASCONSIDERABLESIZECRANKPRESSEARLYTWENTIETHCENTURY,THERISEOFTHEAUTOMOBILEINDUSTRY,CRANKPRESSHASBEENRAPIDDEVELOPMENTINRECENTYEARS,ELECTRONICS,COMMUNICATIONS,COMPUTERS,HOMEAPPLIANCESANDAUTOMOTIVEINDUSTRYRAPIDDEVELOPMENTOFTHERAPIDGROWTHINDEMANDFORSTAMPINGPARTSBOTHSIZEANDSHAPETENDTOSTANDARDIZATIONANDSERIALIZATIONOFTHEFUNCTIONALSTAMPINGS,PRODUCTIONVOLUMEGROWINGSUCHASSMALLANDMEDIUMSILICONSTEELSTATORANDROTORMOTOR,HIGHPRESSUREDEVICESILICONSTEEL,RAZOR,ITCHIP,ETC,INORDERTOREDUCECOSTSANDIMPROVELABORPRODUCTIVITY,THESEPARTSARESUITABLEFORHIGHSPEEDPRESSESFORMASSPRODUCTION;IN1910,THEUSCOMPANYSFIRSTFOURCOLUMNSATTHEENDOFHENRYPRATTTRANSMISSIONSTRUCTUREOFTHEPRESS,SOFAR,NEARLY100YEARSOFHISTORY,UNTILTHEPRESSTODAYISTHEDEVELOPMENTOFTHEMOSTPROSPEROUSPERIODSPEEDPRESSESCONSTANTLYBEINGREFRESHED,SUCHASNIDECBEIJINGPROFITSMACH100ULTRAHIGHSPEEDPRECISIONPRESSCHINASACCESSIONTOWTO,THEACCELERATEDPACEOFGLOBALIZATIONOFMARKETS,COMPETITIONHASBECOMEINTENSEHARSH,SOTHEINDUSTRYONTHEPROPOSEDHIGHPRECISIONSTAMPINGPARTS,GOODQUALITYANDLOWCOST,HIGHERREQUIREMENTSFIRST,THECLASSIFICATIONANDMODELOFCRANKPRESSPRESSES,INCLUDINGHYDRAULICANDMECHANICALDRIVEOFTHEPRESS,FORGINGMACHINEISDIVIDEDINTOMECHANICALPRESSES,HYDRAULICPRESSESANDOTHEREIGHTCATEGORIES,FORGINGMACHINESINTHEEIGHTCATEGORIES,EACHDIVIDEDINTOTENCATEGORIES,EACHCOLUMNWASDIVIDEDINTOTENGROUPSTHEMAINPARAMETERSANDTHEBASICMODEL2THESAME,BUTDIFFERENTSECONDARYPARAMETERSANDBASICMODEL,CALLEDVARIANT,THECLASSCODETOADDALETTERAFTERTHELETTERA,B,C,INTURN,SAIDFIRST,SECOND,THIRDVARIANTCRANKPRESSMODELSWITHCHINESEPHONETICALPHABET,LETTERSANDNUMBERSTHAT,FOREXAMPLE,THEMEANINGOFJC2363AMODELISJC2363A││││└────STRUCTUREANDPERFORMANCEIMPROVEMENTSOVERTHEFIRSTPROTOTYPEMADE│││└─────630KNMAINPARAMETERS││└───────THETHIRDGROUPOFTHESECONDCOLUMN,TWOCOLUMNTILTINGPRESSOPEN│└────────MINORANDBASICMODELSOFTHEDIFFERENTPARAMETERSOFTHETHIRDVARIANTREPRESENTATIONMODELNOWDESCRIBEDASFOLLOWSFIRSTLETTEROFTHECODEFORTHECLASS,WITHTHEPINYINLETTERSTHESECONDLETTERREPRESENTSAVARIANTOFTHESAMEMODELSEQUENCENUMBERTHIRDANDFOURTHFIGURESWEREOUT,THEGROUPCODEHORIZONTALLINEBEHINDTHEFIGURESREPRESENTTHEMAINPARAMETERSNOMINALPRESSUREPRESSESFORGENERALUSEASTHEMAINPARAMETERTHELASTLETTERREPRESENTSTHEPRODUCTSTRUCTUREANDPERFORMANCEIMPROVEMENTSINTHEORDERNUMBERSOMEOFFORGINGEQUIPMENT,IMMEDIATELYFOLLOWINGTHECOLUMN,THEGROUPBEHINDTHECODEANDALETTER,ONBEHALFOFTHEGENERALCHARACTERISTICSOFEQUIPMENTSECOND,THEPRESSOFTHEWORKINGPRINCIPLEANDSTRUCTURE3FIGUREOFADRIVECRANKPRESSTHEFIGURE1MOTOR2PULLEY3,4GEAR5CLUTCH6CONNECTINGROD7SLIDERMOTORDRIVENPULLEYSYSTEM12WILLSPREADTOTHESMALLPOWERGEAR3,THROUGHTHESMALLGEAR3ANDGEAR4MESHINGWILLSPREADTOTHECRANKSHAFTPOWER,ANDTHENUSETHEROTATIONOFTHECRANKSHAFTROTATIONINTORECIPROCATINGLINEARMOTIONOFTHESLIDER7BRAKEANDCLUTCHAREMOUNTEDONTHECRANKSHAFT,THEMOTORDOESNOTCUTOFFTHEPOWERSUPPLYSITUATION,ANDSTOPMOVINGTHESLIDERSWITCHCONTROLTHROUGHTHEMANIPULATIONOFCLUTCHANDBRAKETOACHIEVEWHENTHEBRAKEBRAKE,CLUTCH,ITWILLDRIVECONNECTEDWITHTHECRANK,POWERINPUT,THESLIDERMOVEMENT;WHENYOUNEEDTOSTOPTHEMOVEMENT4OFTHESLIDER,THECLUTCHWILLDISENGAGETHETRANSMISSIONANDCRANKTHESAMETIME,INERTIABRAKEISTHEBRAKEEFFECTIVELY,SOTHATTHESLIDERMOTIONINTIMETOSTOPTHIRD,THEMAINTECHNICALPARAMETERSOFCRANKPRESSTHEMAINTECHNICALPARAMETERSSHOULDREFLECTTHEPRESSSABILITYTOWORK,WORKPIECESIZECANRANGEOFINDICATORSONPRODUCTIVITYANDOTHERTHEMAINTECHNICALPARAMETERSARENOMINALPRESSUREFGKNANDNOMINALPRESSURESTROKESGMMNOMINALPRESSUREOFFGREFERSTOTHESLIDERFROMTHELOWERDEADPOINTTOASPECIFICDISTANCECALLEDTHENOMINALPRESSURESTROKESGWHENTHESLIDERALLOWSTHEMAXIMUMFORCETOBEARNOMINALPRESSUREANGLEAGNOMINALPRESSURESTROKEWITHTHECRANKANGLECORRESPONDINGTOTHEPRESSUREANGLEISDEFINEDASTHENOMINALSGONLYTRAVELWITHINTHENOMINALPRESSURE,EQUIPMENT,ABILITYTOWORKTOACHIEVEFGALSOKNOWNASTHERATEDPRESSUREVALUENOMINALPRESSUREMAINLYTAKEPRIORITYNUMBERSERIES,63,100,160,250,315KNSLIDESTROKESMMREFERSTOTHESLIDERFROMTHEDEADTOTHENEXTPOINTAFTERTHEDEATHOFDISTANCE,ITSVALUEISTWICETHECRANKRADIUSSLIDESTROKEWITHTHEDEVICEISUSUALLYANOMINALINCREASEOFPRESSURESOMEOFTHEPRESSURESTROKEISADJUSTABLESLIDERTRIPSN1/MINREFERSTOTHECONTINUOUSMODETHESLIDERFROMTHENUMBEROFTIMESPERMINUTE,ANDTHECORRESPONDINGCRANKSPEEDGENERALPRESSEQUIPMENTSMALLER,THEGREATERTHENUMBEROFSTROKEHIGHSPEEDPRESSSTROKESPEEDISADJUSTABLESHUTHEIGHTPRESSTHESHUTHEIGHTISONLYPOINTINTHENEXTSLIDE,SLIDETOTHEBOTTOMOFTHETABLEPLANEITPLATEINTHEPLANEBETWEENTHEDISTANCEPRESSTHESHUTHEIGHTBYADJUSTINGTHECONNECTINGRODLENGTHINACERTAINRANGEWHENTHEBARRAISEDTOTHEMINIMUMONTHEECCENTRICPRESSESTHETRIPSHOULDBETOMINIMUM,SLIDETHEBOTTOMTOTHEDISTANCEBETWEENTHETABLEPLANE,THEMAXIMUMFORTHEPRESSSHUTHEIGHT;WHENADJUSTEDTOTHELONGESTRODECCENTRICPRESSTHETRIPSHOULDBETOMAXIMUM,THESLIDERINTHEBDC,THEBOTTOMSLIDERTOTHEDISTANCEBETWEENTHETABLEPLANE,THEMINIMUMFORTHEPRESSSHUTHEIGHTPRESSESDIEHEIGHTMINUSTHEHEIGHTOFTHECLOSUREMEANSTHEPRESSPLATETHICKNESSDIFFERENCENOPADPRESSES,DIEHEIGHTEQUALTOITSCLOSEDHEIGHTOFPRESSHEIGHTOFTHEMOLDISCLOSEDWORKINGPOSITIONATTHELOWESTDIE,DIESEATONTHEPLANETOTHENEXTMODELTHEDISTANCEBETWEENTHEPLANESEATCLOSEDMOLDHEIGHTANDTHERELATIONSHIPBETWEENPRESSANDPUTONAHIGH

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