从优化生产中的物流活动提高生产体系课件.pptVIP

从优化生产中的物流活动提高生产体系

JIT生产(准时,准量生产):Whatismeantbytheterm,“Just-In-Time”?JIT生产意味着什么?–DoesitmeanJITSupply?准时,准量供应?–DoesitmeanJITProduction?准时,准量生产?

So,whatisJust-In-Time?那么,什么是准时准量生产?Theconceptofproducingthenecessaryunitsinthenecessaryquantitiesatthenecessarytimeisdescribedbytheshort-phrase“Just-In-Time”.JIT生产是:在必需时间内生产必需数量的必需部品的概念.

Forexample….Inbuildingshoes:Thenecessarysubassembliesoftheproceedingprocess(uppersandbottoms)shouldarriveattheassemblylineatthetimeneededintheamountsneeded.举例说明:在生产成品鞋的时候:制鞋所必需的部件(鞋帮和鞋底)要准时,准量,准型号地到达制造车间.

IfweachieveJIT:如果我们做到准时,准量生产:?Unnecessaryinventorieswillbeeliminated.不必要的库存就会消除?Storesandwarehouseswillnotbeneeded.储存区和仓库也可以取消?Materialcarryingcostswillbediminished.资材搬运成本降低

However….TorelysolelyonacentralplanningapproachthatinstructstheproductionschedulestoallprocessessimultaneouslyisnotlikelytoresultinaJITprocessforalloperations.但是：单纯地依赖计划生产的方法,使所有工序同步生产，并不能完全实现所有环节的准时，准量生产.

Typically,onecontroloperationreceivesthecustomers’ordersanddisseminatesschedules.通常，生产控制部门接受客户定单，然后制订并传达计划.ProductionControl生产控制WeeklySchedule每周生产计划MacThrinaninsgfe加r工WelWdinagsh焊e接rAsseAmssbelym组b装lyShipping装船

Theproblemcomeswhenachangeismadeeitherbecausetheorderchangesorequipmentbreaksdown.但是当定单有变化或设备出现问题的时候，就会发生一些问题：ProductionControl生产控制WeeklySchedule每周生产计划库存IIMacThrianninsfge加r工WeWldiansgh焊er接AsseAmssbelmy组bly装Shipping装船II库存I库存I库存

Theresultisexcessinventory…结果是导致过多的库存……withintheplantasWork-In-Process…在本车间工序内积压过多的库存…supplierssendinginpartsthatarenotneeded…上一道工序发来的并不需要的部件

Additionally另外,?Weneedextrafloorspacetostorethematerial.我们需要额外的空间来堆放材料?Needexpeditorstosatisfythechangesinschedule.需要人力和时间投入来改变生产计划?Runovertimetomakeuppartsthatwenowneed.用加班时间来生产现在所需部件

Toyotarethoughthowtocommunicateschedules.丰田公司对调整生产计划做了改进:?Toyotadiscoveredadifferentwaytomanagetheirschedule,丰田使用不同的方法来制订调整生产计划?