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OPERATIONS. Customer. A Manufacturing System. Internal Disturbances. External Disturbances. Raw Materials Socio-Political Environment Information Demand Energy Suppliers. O U T P U T S. I N P U T S. Products Service Information Profit.
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OPERATIONS Customer A Manufacturing System Internal Disturbances External Disturbances Raw Materials Socio-Political Environment Information Demand Energy Suppliers O U T P U T S I N P U T S Products Service Information Profit Physical ObjectsMeasurable Parameters Machine Tools Production Rate Tools Cycle Times Matl. Handling Equipment Defects per Million People Unit Cost
What is a ManufacturingSystem? “A ROI-oriented, highly interactive network of processes through which materials and information flow.” Adapted from Hopp and Spearman Factory Physics
What is a Manufacturing System? The arrangement and operation of machines, tools, people, suppliers, material and information to produce a value- added product, whose success and cost are characterized by measurable parameters.
Interactions Time lags Non-linearities People Conflicting goals Short-term vs Long-term benefits Effect of uncontrollable external forces Must interface with design & suppliers Why are Mfg Systems so hard to manage? CLASSIC SYSTEMS BEHAVIOR ! A COMPLEX, TIGHTLY COUPLED NETWORK