6Sigma六西格玛精益生产持续改善分析管理常用工具资料 The_Lean_Enterprise_15_Kanban_Push_vs_Pull(看板和拉动)

1、The Lean EnterprisePush versus PullLean FoundationsContinuous Improvement TrainingThe purpose of the module is to allow you to become familiar with the distinction between Push and Pull systems. PurposePull and Flow . . . .Principles of Process Analysis Flow Pull SystemsActions Required to get impro

2、ved f - l - o - w Batch Size Reduce Set-Up times and cut lot sizes “Fewer piece flow” - 1 piece is usually better People Multiple Skill Development Multiple Process Handling Materials Eliminate “Isolated Islands” Machines Laid out in processing order “right” machines to ensure the flowPull and Flow

3、. . . .Principles of Lean ThinkingFlowPull SystemsPUSH vs. PULL SYSTEMSPush vs Pull: What IS the Difference ?A requirement of any production operation is to enable everyone to know exactly: - what product is needed - by when - in what quantityThere are two ways to do it:Heres One Way - issue PRODUCT

4、ION SCHEDULES to every process using the parts from one process to drive the work at the next process - in essence PUSHING THE PARTS THROUGH THE SYSTEMPush vs Pull: What IS the Difference ?A requirement of any production operation is to enable everyone to know exactly: - what product is needed - by

5、when - in what quantity There are two ways to do it:ONE WAY - issue PRODUCTION SCHEDULES to every process using the parts from one process to drive the work at the next process - in essence PUSHING THE PARTS THROUGH THE SYSTEMANOTHER WAY - letting a process withdraw the parts from a preceding proces

6、s or PULLING THE PARTS THROUGHPush Systems Driven by Forecasts Parts are sent to the next Operation or stored in WIP The second operation continues even if there is a large amount of WIP from the first operation Buffers cover problems Expeditors push Hot partsPUSH SYSTEMS HAVE NO DISCIPLINE ON INVEN

7、TORYMore is always betterPull ProductionThe Customer usage rate determines the production rate in a PULL SYSTEM. “TAKT TIME” is that customer usage rate.Pull Production Establishment of Pull systems between operations in the same plant Connection of operations that are at a distance from each other Elimination of inter-departmental schedulingPull Production Produces only whats required by the next operation The user withdraws from the producer Kanbans or Visual Systems signal the need