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1、AbstractAbstractSincethebeginningofthenewcentury,theglobaleconomyhasdevelopedrapidly.Thecountriesoftheworldeconomicandmarketenvironmenthasgreatlychanged.Withtheincreasingcustomerdiversity,individualneeds,manyenterpriseshaveadoptedthecustommodeofproduction.S
2、ingle-piece,smallbatchproductionstrategiesusedinsuchcircumstancesisofsuchenterprisesplayaveryimportantrole.Thevariabilityduetotherandomnessoftheorders,thediversityofproducts,processes,andwhichtotheenterpriseinthedevelopmentofworkinghours,workinghourscosting
3、enormouspressure.Whenthehourestablishmentisnotquiterationalenoughscience,thistotheenterpriseintheproductionprocurement,productionplanning,productdeliverybringgreattrouble,notonlymaketheenterpriseproductionefficiencyislow,theenterprisemanagementlevelisnothig
4、h,moreimportantistobeabletoenableenterprisestograduallylosemarketcompetitionability.Therefore,forlargesingleandsmallbatchproduction-orientedenterprisesintheprocessofwhentoimprovethemanagementlevelofproductiontomeetthedemandofmarketdiversification,improvepro
5、ductionefficiency,productman-hourstodevelopthescientificrationalitybecomecritical.Thisarticleisthebasisforthestudyoffixedworkinghoursinsingleandsmallbatchdesignandmanufactureofrelevanttheoryandindustrialengineering-orientedtheory.Existingfixedworkinghoursis
6、inadequate,combinedwiththeprincipleofsimilarityoftheproductsandtheproductstructuretreethinking.Proposeanewmethodfortimequota-orientedproductstructure-productstructurefixedmethod,referredtoasthePSNAct（ProductStructureNorm）.First,themethodreliesonthedesignand
7、manufactureofsingleandsmallbatchbasictheoryofthestructuralunitofalllevelstoredefineandrelyonanewdefinitionofthestructureunitwasconstructedbasedonthestructuralmodelofthemethod;Again,themethodtousewhentheuseofextenicstheoryandextensionofprimitivetheory,variou
8、sstructuralunitsofextensiontodescribethehierarchicalrelationshipsbetweenthevariousstructuralunitsbythedescriptionoftheprimitiveexpression;Third,theuseofprimitivetheoryofextensiontransformationandcombin
