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ID:11248003
大小:1.22 MB
页数:10页
时间:2018-07-11
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1、设计巴巴工作室www.88doc88.com外文翻译英文原文:FlexibleManufacturingSystemAlogicalstepfromtheconceptsofgrouplayoutandofNCmachinetoolsandroboticsarecomputer-controlledinterlinkedoutstationmachiningcomplexes,or11exibemanufacturingsystems(FMS)astheyhavebedclothescall.do.Suchsystemsca
2、nbelookeduponashighlyautomatedcellsmanufacturingfamiliesofcomponents.TheconceptofFMSisnotanewone;thefirstproposalsweremadeinthemid1960s.Inrecentyearswehaveseenagrowthinthenumberofsystems,particularlyinJapan,suchthatitisestimatedthatinexcessofahundredsystemshavebeen
3、installedworldwide.Aflexiblemanufacturingsystemcontainsanumberoffeaturesasfollows:1.InterlinkedNCworkstationsoperatingonalimitedrangeorfamilyofworkpieces.Inearlypropos-alesthemachineswereofmodularconstruction,butinrecentsystemsgeneral-purposeNCmachines,inparticular
4、machiningcenters,aremostcommonlyused.2.Automatictransportation,loadingatunloadingofworkpiecesandtools,usingautomaticguidedvehicles(AGVs),robots,etc.3.Workpiecesmountedonpalletsft*transportation,pattlytoovercometheproblemsofnewsetupsateachworkstation.4.CentralizedNC
5、orDNC,togetherwithoverallcomputercontrolofthesystem.5.Operationforsignificantperiodsoftimewithlittleornomanualintervention.WithFMStheternflexibilitymeanstheabilitytoaptnessavarietyofcomponentswithouthavingtoadjustmachinesetups.Orchangetooling.Highflexibilityimplies
6、thatalargefamilyofdifferentcomponentscanbeproducedbytheparticularsystem.Figure5.17showthatseveralvariantsofthebasicFMScon-keptexist.Theseare;l.Flexiblemanufacturingcells(FMs):Thesearebasicallymachiningcentumbutwiththeadditionofapalletpoolormagazine(Fig.5.t8).Theaim
7、istomachinetheworkpiecewithonestupefiestypeofmachinecanbeoperatedunmannedforlongperiodsoftime,withthepalletizedworkpiecestransformedau-somaticallytoandfromthemachine.Flexiblemanufacturingcellsofthistypemustbeservedbymachinesoroperatorsengagedinblankpreparationandpo
8、larizationofworkpieces.Thesecellsarehighlyflexibleinoperation,havingtheabilitytodealwithawiderangeofpats(40to800),insmallbatchesoffrom15to500.2.F
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