准时制与精益生产方式.pptx

Lean ProductionJIT Lean Production Systems准时制与精益生产方式Fang Aihua Wuhan UniversityJust-in-time Production SystemsLean Production DefinedThe Toyota Production SystemLean Implementation RequirementsLean ServicesLP的定义丰田生产系统LP的实施条件精益服务Fang Aihua Wuhan University2Lean Production Defined精益生产方式的定义Fang Aihua Wuhan UniversityLean Production 定义Lean Production can be defined as an integrated set of activities designed to achieve high-volume production using minimal inventories (raw materials, work in process, and finished goods)Lean Production also involves the elimination of waste in production effort Lean Production also involves the timing of production resources (i.e., parts arrive at the next workstation “just in time”)LP: 利用低库存获得高产量的一整套活动.LP:努力消除浪费LP:生产资源的时间编排(JIT)Fang Aihua Wuhan UniversityVendorFabSubVendorFabFinal AssemblyCustomersSubFabVendorFabVendorHere the customer starts the process, pulling an inventory item from Final Assembly…Pull System拉动系统Then sub-assembly work is pulled forward by that demand…The process continues throughout the entire production process and supply chainFang Aihua Wuhan University生产方式的演变法、德（19世纪）奔驰公司美国（20世纪上半叶）福特公司日本（20世纪下半叶）丰田公司手工生产方式大量生产方式精细生产方式大规模定制Fang Aihua Wuhan University精细生产方式Lean Production美麻省理工学院国际汽车项目组的研究人员给日本汽车工业的生产方式起的名称。与大量生产方式相比，只需一半的(人员、场地、投资)产出质量更高、品种更多的产品Fang Aihua Wuhan UniversitySome statistics from 1986Framingham (GM)40.7 hours130 defects2 weeksToyotaTakaoka16 hours45 defects2 hoursA comparison of 1) assembly hours2) defects / 100 cars3) average inventory levelsFang Aihua Wuhan UniversityThe Japanese Approach to Productivity精益生产方式的产生背景Goal of full employment in the post WWII period.Government (MITI) supported improvement of targeted industries.Imported technologies.Efforts concentrated on factory floor.Quality improvement focus全民就业的目标 （实业建国）政府扶持计划选定的产业引进技术 （而非自主开发）注重生产一线持续质量改进Fang Aihua Wuhan University5Two Philosophies核心理念Elimination of waste Respect for people.消除浪费尊重人Strive for Simplicity