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1、上海交通大学工程硕士学位论文ABSTRACTPRODUCTIONSYSTEMIMPROVEMENTFORCOMPANYLABSTRACTThemainpurposeofthisthesisistoimproveMaterialsHandlingEquipmentmanufacturerL’sproductivity,on-timedeliveryrateandcostadvantageforprovidingmulti-varietiesandcustomizedforklifts.Thecompetit
2、ionwithindomesticmarketisbecomingfiercerandfiercer.CompanyLmustadaptitsproductionsystemtomulti-varieties,smallbatchandcustomizeddemand.Firstly,StrategyManagementtheorieswereadoptedtoanalyzeL’sstrengthesandweaknesses,businessprofileandmarkettrend.Leanprodu
3、ctionwasthenproposedtosupportL’scorporationstrategy.Secondly,basedonanalyticresultsofValueStreamMapping,valueaddedtimeandnon-valueaddedtime(NVAT)inprocesses,5WandfishbonechartwereusedtofindtherootcausesofNVAT.Tosolvetheproblemofnon-matchmaterials,highWIPa
4、ndinventory,productionplanningwasimprovedforbalancingJITproduction.Processutilizationchartwasappliedtoidentifytheprocessbottleneck.Productionresourcewasreassignedtoremovethelimitationfrombottleneck.ThisthesisappliedABCclassificationtoanalyzedemandofeachva
5、riety,andthendesignedmainproductionplanmode.Inventoryand“maketoorder”strategieswereadoptedtorespondtherequirement.Basedonequipmentandworkerutilizationrates,jobassignmentandproductionschedulingandsequencingwereproposedtoimprovematerialmatchingrate.Processf
6、lowchartwasusedtobalanceproductionlineandremovewastes.Processlayoutwasfurtherimprovedtoreducetransportationdistances.Foronepieceflowproduction,otherleantoolsincluding5S,visualmanagementandKanban,wereappliedtoimproveproductionlines.Combiningstatisticaldata
7、ineachprocedure,SPCwassuccessfullyappliedinsmallbatchassemblyforimprovingproductionquality.Finally,inventoryoptimizationmodelforrevenuemaximizationwasalsoproposed.Basedonsalesdataofeachvariety,forkliftsweresortedinto3typesandstockedbyMTS,ATOandMTOmodesres
8、pectively.KEYWORDS:balanceproduction,materialshandlingequipment,productionsystem,multi-varietiesandsmallbatch,SPCII上海交通大学工程硕士学位论文目录目录摘要................................................................................