1 / 13

FIXED BATCH KANBAN SYSTEM AND LEAD TIME CONTROL

FIXED BATCH KANBAN SYSTEM AND LEAD TIME CONTROL. Alain Prioul. JUNE 2010. FIXED BATCH KANBAN SYSTEM AND LEAD TIME CONTROL. PULL SYSTEM - MIFA. Customer. Demand : forecast/firm. PC & L. A B C. ABC. Leveling board. Purchased parts. Batch building. A. B. Process 2. TPA.

nelly
Download Presentation

FIXED BATCH KANBAN SYSTEM AND LEAD TIME CONTROL

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. FIXED BATCH KANBAN SYSTEMAND LEAD TIME CONTROL Alain Prioul JUNE 2010

  2. FIXED BATCH KANBAN SYSTEM • AND • LEAD TIME CONTROL

  3. PULL SYSTEM - MIFA Customer Demand : forecast/firm PC & L A B C ABC Leveling board Purchased parts Batch building A B Process 2 TPA Process 1 C F. G.Shopstock Process Stagnation Production Lead Time NO LEAD TIME CONTROL NO CONTROL OF THE FLOW

  4. BATCH PRODUCTION Demand : forecast/firm PC & L A B C Leveling board Purchased parts Batch building A B Process 2 TPA Process 1 C Customer A B C A time Stock A = Lead time of A

  5. FIXED BATCH CONCEPT A B C A Fixed ? Fixed quantity ? Fixed duration Production Cycle Time of A or B or C Packaging of A or B or C Nb of Kb in one lot vary with

  6. FIXED QUANTITY BATCH : LEAD TIME VARIATION Stock A Batch is longer than standard A B B C C A A Lead Time A Stock Shortage A • If production duration of B or Cis longer, Lead Time of A is longer. Same for B andC. • Same consequence iftool change time is longer than standard.

  7. POOR LEVELING ALSO IMPACTS LEAD TIME WK PIK Unleveled Withdrawals ABC Schedule change C B A Shopstock A B C A B A B Lead Time A

  8. CAUSES OF LEAD TIME VARIATION • Production time longer than standard • Tool change longer than standard • Unleveled withdrawals • Stagnation of information Even when we fix the quantity of Kanban in a batch, we do not control the Lead Time

  9. PRODUCTION PATTERN A A B C A B 8h 10h 12h 14h 16h B C A 8h 10h 12h 14h 16h  Schedule is pre-define Changeovers are planned LEAD TIME IS UNDER CONTROL

  10. PRODUCTION PATTERN Production pattern A B PIK A B C A B C A B C Daily demand Pre-requisites Demand stability Line reliability OPR control

  11. Production pattern Advantages • Good visualization of future changeover • Synchronization with preceding or next process is possible • Strong incentive for beeing lean Disadvantages • Becomes difficult when law runners are not predictable • No adaptation to demand variations

  12. TO REMEMBER Fixed batch Kanban system do not ensure systematically stability of Lead Time Lead Time Control is key to control plant performance

More Related