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Manufacturing Operation As A Single System

Manufacturing Operation As A Single System. OPERATION. OUTPUT (PRODUCTS). INPUT (RAW MATERIALS). CONTROL. Information flow. Manufacturing Operation As A Single System. LITTLE`S law: TH=WIP/CT. OPERATION. THROUGPUT (Products/Time). WORK IN PROCESS (Units of RAW MATERIALS).

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Manufacturing Operation As A Single System

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  1. Manufacturing Operation As A Single System OPERATION OUTPUT (PRODUCTS) INPUT (RAW MATERIALS) CONTROL Information flow Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  2. Manufacturing Operation As A Single System LITTLE`S law: TH=WIP/CT OPERATION THROUGPUT (Products/Time) WORK IN PROCESS (Units of RAW MATERIALS) CYCLE TIME (Time) CONTROL Information flow Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  3. Variability Sources Of Variability In A Single Operation Processing Inputs Machine Failures Shut downs due to quality problems Operator´s Off Times Slow downs due to set ups Scheduled maintenance Tardy arrivals of materials High Work In Process Priorities Recycles Defective materials Tardy arrivals Incomplete lots Wrong lots Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  4. Wo Parameters And Variability Interrelationships WIP TH CT Variability Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  5. Parameters And Variability Interrelationships Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  6. Most Dependent Operation 5 Dependency Phenomenon 2 Raw materials End Products 1 3 4 Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  7. VARIABILITY DEPENDENCY Variability And Dependency Phenomenona Affect: THROUGHPUT (TH) WORK IN PROCESS (WIP) CYCLE TIME (CT) Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  8. Bottleneck Effect ri = Production rate (parts/unit time) 1 2 3 r2 r1 r3 r1 = min (r1,r2,r3) is the bottleneck Even if W increases as infinite, TH is maximum r1 Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  9. Bottleneck Effect Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  10. Global Processing Time:To ti = Production time (time per unit) 1 2 3 t1 t2 t3 Global Processing Time To To = t1 + t2 + t3 Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  11. Critical Wip:Wo To = Global Processing Time rb = bottleneck rate Wo = (rb). To Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  12. Best Performance Law W/To, if W < Wo or W =Wo rb, otherwise To, if W < Wo or W =Wo W/rb, otherwise Thbest = Ctbest = Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  13. Worst Performance Law THworst = { W/(Wo+W-1)}* rb CTworst = To + (W-1)/rb Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  14. Some Performance Tips TH REMAINS EQUAL OR LESSER AS WIP INCREMENTS CT INCREMENTS Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  15. Some Performance Tips MANUFACTURING PLANNERS MUST TO KNOWWo IT MEANS THEY HAVE TO KNOWrb BECAUSEWo = rb.To Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  16. Some Performance Tips WIP MUST BE A CONTROL PARAMETER Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  17. Some Performance Tips 1. TO CONTROL WIP INSTEAD OF TO CONTROL THROUGHPUT 2. TO CONTROL VARIABILITY Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  18. Some Performance Tips MRPSYSTEMS CONTROLTHROUGHPUTINSTEAD OF CONTROLLINGWIP MRPIS A POWERFUL INFORMATION TOOL SOMEMRPSYSTEMS TREAT TO CONTROLVARIABILITY Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  19. Some Performance Tips Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  20. Some Performance Tips Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

  21. Animated Simulation Benefits STUDENTS MAY OBSERVE AND ANALYZE MANUFACTURING PARAMETERS WHILE SIMULATION RUNS STUDENTS MAY CONSTRUCT STEP BY STEP MORE COMPLEX SYSTEMS STUDENTS LEARN FACTORY PHYSICS BY DOING SIMULATION Luis Ernesto BLANCO RIVERO "SIMULATION AS A TOOL FOR UNDERSTANDING MANUFACTURING"

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