Lean_Manufacturing___Just-in-Time

Lean_Manufacturing___Just-in-Time - Lean Manufacturing...

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Lean Manufacturing & Just-in-Time "The most dangerous kind of waste is the waste we do not recognize." - Shigeo Shingo
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Material Flow Information Flow FGI Customer Raw Material Supplier Final Assembly PUSH  FGI Customer Raw Material Supplier Final Assembly PULL  Reducing Waste: Push versus Pull System
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Push System Every worker maximizes own output, making as many products as possible Pros and cons: Focuses on keeping individual operators and workstations busy rather than efficient use of materials Volumes of defective work may be produced Throughput time will increase as work-in-process increases (Little’s Law) Line bottlenecks and inventories of unfinished products will occur Hard to respond to special orders and order changes due to long throughput time
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Pull System Production line is controlled by the last operation, Kanban cards control WIP Pros and cons Controls maximum WIP and eliminates WIP accumulating at bottlenecks Keeps materials busy, not operators. Operators work only when there is a signal to produce. If a problem arises, there is no slack in the system Throughput time and WIP are decreased, faster reaction to defects and less opportunity to create defects
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5 Management philosophy “Pull” system though the plant WHAT IT IS Employee participation Industrial engineering/basics Continuing improvement Total quality control Small lot sizes WHAT IT REQUIRES Attacks waste Exposes problems and bottlenecks Achieves streamlined production WHAT IT DOES Stable environment WHAT IT ASSUMES Features of Lean Production Kaizen
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A Little History!
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