7 Wastes， Muda.pdf

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1、The7FormsofWastewww.shmula.comByPeteAbillaTheShmula.comGuidetoThe7FormsofWastePage1of25The7FormsofWastewww.shmula.comByPeteAbillaPrefaceThisdocument,unlikeotherliteratureontheToyotaProductionSystemorLeanThinking,explainstheconceptof“waste”intheformofe

2、xamples–manyexamples.Theauthorfindsthatexplanationthroughreal-worldexamplesisthemostpowerfulwaytoteachandthemosteffectivemeansforstudentstolearn.ThisapproachalsoalignswithTaiichiOhno’smaximof“practiceovertheory”–andthatshallbeourmaximalso.Thisdocument

3、explainstheconceptof“waste”,showswasteinseveralreal-worldexamples,andprovidessomeinsightintohowtoidentifyandeffectivelyreduceoreliminatewaste.Theintendedaudienceforthisdocumentisasfollows:•IfyouareastudentlearningtheToyotaProductionSystemorLeanManufac

4、turing.•IfyouareapractitionerofLean.•IfyouarearesearcherinthefieldsofOperationsManagement,SupplyChainManagement,Logistics,andgeneralbusinesseducation.•IfyouareagraduatestudentinbusinessschoolorinanMBAprogramwherelearningaboutprocessimprovementorcontin

5、uousimprovementispartofyourcorestudies.IhopethatyoufindthisdocumenthelpfulinyourstudyofLean.Unlessotherwisenoted,PeteAbilla(www.shmula.com),istheauthorofthearticlesbelow.Enjoyandthankyouforreading.PeteAbillaSeptember2010SaltLakeCity,Utahhttp://www.shm

6、ula.com/Page2of25The7FormsofWastewww.shmula.comByPeteAbillaIntroductionMuda(無駄)isatraditionalJapanesetermwhichmeans“waste”.Onewaytoincreaseprofitabilityofthefirmistofundamentallyreducecosts.FromaLeanperspective,thismeanstoreduceoreliminatewastes.Funda

7、mentallyreducingwastesmeanstobemoreprofitable.Toproperlyunderstandwaste,itisimportanttofirstclarifyvalueandpurpose.Everyprocesshasapurpose.Allthestepsthatleadtoachievingthatpurposearewhatweconsider“value”.Allthestepsthatdonotsupportthepurposeoftheproc

8、essiswaste.TheconceptofMudaorWasteisakeylessonintheToyotaProductionSystem.ShigeoShingo,theco-developeroftheToyotaProductionSystemobservedthefollowing:1“…onlythelastturntightensthebolt.Allpreviousturnsisjustmotion.”Anotherwaytodescribewasteisby