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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,differentspecificationsofthecrankslidermechanismareappliedtomoremachinery.Itisinthemachinerymanufacturingindustryandotherindustrialproductionofmoreandmoresignificantrole,suchasinautomobile,agriculturalmachinery,electronics,medicalequipment,defense,aerospaceandindustrialsectorsandotherdailynecessitieshaveawiderangeofapplications.Thusincreasingthedegreeofautomationmachinery,reducelaborintensityandimproveworkingconditionsareinseparablefromthestudyofslidercrankmechanism.Slidercrankmechanismisimportantinthepresswithinthemainbody.Thelatenineteenthcenturytherewasconsiderablesizecrankpress.Earlytwentiethcentury,theriseoftheautomobileindustry,crankpresshasbeenrapiddevelopment.Inrecentyears,electronics,communications,computers,homeappliancesandautomotiveindustryrapiddevelopmentoftherapidgrowthindemandforstampingparts.Bothsizeandshapetendtostandardizationandserializationofthefunctionalstampings,productionvolumegrowingsuchassmallandmediumsiliconsteelstatorandrotormotor,highpressuredevicesiliconsteel,razor,ITchip,etc.,inordertoreducecostsandimprovelaborproductivity,thesepartsaresuitableforhighspeedpressesformassproductionIn1910,theU.S.companysfirstfourcolumnsattheendofHenryPratttransmissionstructureofthepress,sofar,nearly100yearsofhistory,untilthepresstodayisthedevelopmentofthemostprosperousperiod.Speedpressesconstantlybeingrefreshed,suchasNidecBeijingprofitsMACH100ultrahighspeedprecisionpress.ChinasaccessiontoWTO,theacceleratedpaceofglobalizationofmarkets,competitionhasbecomeintenseharsh,sotheindustryontheproposedhighprecisionstampingparts,goodqualityandlowcost,higherrequirements.First,theclassificationandmodelofcrankpressPresses,includinghydraulicandmechanicaldriveofthepress,forgingmachineisdividedintomechanicalpresses,hydraulicpressesandothereightcategories,Forgingmachinesintheeightcategories,eachdividedintotencategories,eachcolumnwasdividedintotengroups.Themainparametersandthebasicmodel2thesame,butdifferentsecondaryparametersandbasicmodel,calledvariant,theclasscodetoaddaletteraftertheletterA,B,C......,inturn,saidfirst,second,thirdvariant.CrankpressmodelswithChinesephoneticalphabet,lettersandnumbersthat,forexample,themeaningofJC2363AmodelisJC2363A││││└────structureandperformanceimprovementsoverthefirstprototypemade│││└─────630kNmainparameters││└───────Thethirdgroupofthesecondcolumn,twocolumntiltingpressopen│└────────minorandbasicmodelsofthedifferentparametersofthethirdvariantRepresentationmodelnowdescribedasfollowsFirstletterofthecodefortheclass,withthePinyinletters.Thesecondletterrepresentsavariantofthesamemodelsequencenumber.Thirdandfourthfigureswereout,thegroupcode.Horizontallinebehindthefiguresrepresentthemainparameters.Nominalpressurepressesforgeneraluseasthemainparameter.Thelastletterrepresentstheproductstructureandperformanceimprovementsintheordernumber.Someofforgingequipment,immediatelyfollowingthecolumn,thegroupbehindthecodeandaletter,onbehalfofthegeneralcharacteristicsofequipment.Second,thepressoftheworkingprincipleandstructure3FigureofadrivecrankpressThefigure1Motor2pulley3,4Gear5Clutch6connectingrod7sliderMotordrivenpulleysystem12willspreadtothesmallpowergear3,throughthesmallgear3andgear4meshingwillspreadtothecrankshaftpower,andthenusetherotationofthecrankshaftrotationintoreciprocatinglinearmotionoftheslider7.Brakeandclutcharemountedonthecrankshaft,themotordoesnotcutoffthepowersupplysituation,andstopmovingthesliderswitchcontrolthroughthemanipulationofclutchandbraketoachieve.WhenthebrakeBrake,Clutch,itwilldriveconnectedwiththecrank,powerinput,theslidermovementWhenyouneedtostopthemovement4oftheslider,theclutchwilldisengagethetransmissionandcrankthesametime,inertiabrakeisthebrakeeffectively,sothattheslidermotionintimetostop.Third,themaintechnicalparametersofcrankpressThemaintechnicalparametersshouldreflectthepresssabilitytowork,workpiecesizecanrangeofindicatorsonproductivityandotherThemaintechnicalparametersareNominalpressureFgkNandnominalpressurestrokeSgmm.NominalpressureofFgreferstothesliderfromthelowerdeadpointtoaspecificdistancecalledthenominalpressurestrokeSgwhenthesliderallowsthemaximumforcetobear.NominalpressureangleagNominalpressurestrokewiththecrankanglecorrespondingtothepressureangleisdefinedasthenominal.Sgonlytravelwithinthenominalpressure,equipment,abilitytoworktoachieveFgalsoknownastheratedpressurevalue.NominalpressureMainlytakeprioritynumberseries,63,100,160,250,315KNSlidestrokesmmReferstothesliderfromthedeadtothenextpointafterthedeathofdistance,itsvalueistwicethecrankradius.SlidestrokewiththedeviceisusuallyanominalincreaseofpressuresomeofthePressurestrokeisadjustable.Slidertripsn1/minReferstothecontinuousmodethesliderfromthenumberoftimesperminute,andthecorrespondingcrankspeed.Generalpressequipmentsmaller,thegreaterthenumberofstrokehighspeedpressstrokespeedisadjustable.shutheightPresstheshutheightisonlypointinthenextslide,slidetothebottomofthetableplaneitplateintheplanebetweenthedistance.Presstheshutheightbyadjustingtheconnectingrodlengthinacertainrange.Whenthebarraisedtotheminimumontheeccentricpressesthetripshouldbetominimum,slidethebottomtothedistancebetweenthetableplane,themaximumforthepressshutheightwhenadjustedtothelongestrodeccentricPressthetripshouldbetomaximum,thesliderintheBDC,thebottomslidertothedistancebetweenthetableplane,theminimumforthepressshutheight.PressesDieheightminustheheightoftheclosuremeansthepressplatethicknessdifference.Nopadpresses,Dieheightequaltoitsclosedheightofpress.Heightofthemoldisclosedworkingpositionatthelowestdie,dieseatontheplanetothenextmodelthedistancebetweentheplaneseat.Closedmoldheightandtherelationshipbetweenpressandputonahigh

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