资源描述:
《曲柄滑块机构及其特性研究.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、箔胩盗税汀曜庙雹姒抹醯奔Introduction:
Withindustrialdevelopment,differentspecificationsofthecrankslidermechanismareappliedtomoremachinery.Itisinthemachinerymanufacturingindustryandotherindustrialproductionofmoreandmoresignificantrole,suchasinautomobile,agriculturalmachinery,elect
2、ronics,medicalequipment,defense,aerospaceandindustrialsectorsandotherdailynecessitieshaveawiderangeofapplications.Thusincreasingthedegreeofautomationmachinery,reducelaborintensityandimproveworkingconditionsareinseparablefromthestudyofslider-crankmechanism.Slider-crank
3、mechanismisimportantinthepresswithinthemainbody.Thelatenineteenthcenturytherewasconsiderablesizecrankpress.Earlytwentiethcentury,theriseoftheautomobileindustry,crankpresshasbeenrapiddevelopment.
Inrecentyears,electronics,communications,computers,homeappliancesandautom
4、otiveindustryrapiddevelopmentoftherapidgrowthindemandforstampingparts.Bothsizeandshapetendtostandardizationandserializationofthefunctionalstampings,productionvolumegrowing(suchassmallandmediumsiliconsteelstatorandrotormotor,highpressuredevicesiliconsteel,razor,(IT-chi
5、p,etc.)),inordertoreducecostsandimprovelaborproductivity,thesepartsaresuitableforhigh-speedpressesfor陌拶蜗靛磺瓦洛叫桤鲍慝怜massproduction;
In1910,theU.S.company'sfirstfourcolumnsattheendof鬲龠倒溯姿杀伺瀚械憷匏砑HenryPratttransmissionstructureofthepress,sofar,nearly痹檫愆秒菸役辂会濯嗑诉降100yearsofhi
6、story,untilthepresstodayisthedevelopmentofthe阿腿阅呐舛挟付忠婢刻抢碧mostprosperousperiod.Speedpressesconstantlybeingrefreshed,祟署憨毡沙阢妙矽花讫徨成suchasNidecBeijingprofitsMACH-100ultra-high孔倭曝途仃拄兀淌磺熔欣靖speedprecisionpress.China'saccessiontoWTO,theacceleratedpaceofglobalizationofmarkets,c
7、ompetitionhasbecomeintenseharsh,sotheindustryontheproposedhighprecisionstampingparts,goodqualityandlowcost,higherrequirements.
First,theclassificationandmodelofcrankpress:鼙绪伺簇肋彭椭炭酱岳绕赈 Presses,includinghydraulicandmechanicaldriveofthepress,forgingmachineisdividedinto
8、mechanicalpresses,hydraulicpressesandothereightcategories,Forgingmachinesintheeightcategories,eachdividedintotencategories,e