Chapter 9 Inprocess Inventory Just In Time and

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Chapter 9 In-process Inventory, Just- In- Time, and Theory of Constraints.

Chapter 9 In-process Inventory, Just- In- Time, and Theory of Constraints.

Production Processes 1. Continuous Processes & Flow Shop 2. Intermittent Processes & Job Shop

Production Processes 1. Continuous Processes & Flow Shop 2. Intermittent Processes & Job Shop 3. Special Project

Scheduling 1. Forward Scheduling 2. Backward Scheduling

Scheduling 1. Forward Scheduling 2. Backward Scheduling

In-Processes Inventory 在製品存貨能防止 作站作業的停止，並 可調節瓶頸站及各 作站間的通路。 在製品有何用途? 過多 在製品 又將會如何? 過多的在製品存貨會引起 1. a long

In-Processes Inventory 在製品存貨能防止 作站作業的停止，並 可調節瓶頸站及各 作站間的通路。 在製品有何用途? 過多 在製品 又將會如何? 過多的在製品存貨會引起 1. a long manufacturing cycle time. 2. a complex and costly control system. 3. high materials movement cost. 4. high floor space requirement.

LEAD TIME 生產循環時間(Production Cycle Time)是由採購原 物料到成品完成並包裝所需時間 製造循環時間(Manufacturing Cycle Time)是所有 製造所需作業的時間 Manufacturing Cycle Time Setup

LEAD TIME 生產循環時間(Production Cycle Time)是由採購原 物料到成品完成並包裝所需時間 製造循環時間(Manufacturing Cycle Time)是所有 製造所需作業的時間 Manufacturing Cycle Time Setup Process Wait Move time Queue time

Time Cycle Charts Critical items line

Time Cycle Charts Critical items line

Input / Output Control

Input / Output Control

Input / Output Control

Input / Output Control

JIT defects queues breakdowns Work-in-process lead time lot excesses

JIT defects queues breakdowns Work-in-process lead time lot excesses

JIT defects queues breakdowns Work-in-process lead time lot excesses

JIT defects queues breakdowns Work-in-process lead time lot excesses

JIT queues breakdowns Work-in-process lead time lot excesses

JIT queues breakdowns Work-in-process lead time lot excesses

JIT queues breakdowns Work-in-process lead time lot excesses

JIT queues breakdowns Work-in-process lead time lot excesses

JIT breakdowns Work-in-process lead time lot excesses

JIT breakdowns Work-in-process lead time lot excesses

Just-In-Time Goals Zero defects Zero setup time Zero lot excesses Zero handing Zero queues

Just-In-Time Goals Zero defects Zero setup time Zero lot excesses Zero handing Zero queues Zero breakdowns Zero lead time

Kanban Start Enhance quality assurance Small lot production Expose quality problems Fast detection Further

Kanban Start Enhance quality assurance Small lot production Expose quality problems Fast detection Further lot Quality problem Fast correction size reductions elimination Waste prevention Waste reduction Improved JIT performance

Kanban 看板數量的決定公式如下： DL(1. 0 + a) N≧ Q a= safety stock policy variable D=

Kanban 看板數量的決定公式如下： DL(1. 0 + a) N≧ Q a= safety stock policy variable D= demand per day in units L= lead time Q= quantity of parts held in a container

Drum-Buffer-Rope

Drum-Buffer-Rope

VAT Plants End items Input V-Plant A-Plant T-Plant

VAT Plants End items Input V-Plant A-Plant T-Plant

Continual Improvement Identify constrains Optimize constraint output Subordinate all decisions to constraint optimization Expand

Continual Improvement Identify constrains Optimize constraint output Subordinate all decisions to constraint optimization Expand the constraint Is Yes constraint still active? No

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