23_posting_-_Scheduling

23_posting_-_Scheduling - Operations Scheduling A schedule...

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12/02/2010 1 Operations Scheduling “A schedule defends from chaos and whim.” Annie Dillard
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12/02/2010 2 Operations Scheduling – Big Picture Demand Forecasting Detailed Capacity Planning Rough-Cut Capacity Planning Master Production Scheduling Material Requirements Planning Aggregate Production Planning Resource Planning Purchasing Shop Floor Control Feedback
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12/02/2010 3 Shop Floor Control Background BASIC PURPOSE of SFC : Detailed scheduling of orders / jobs on the factory floor KEY TASKS of SFC: Determining sequence of jobs to be processed at each individual work station; assigning priority to jobs waiting in queue. Conveying shop order status information to management.
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12/02/2010 4 Shop Floor Control Vocab Operation Processing Time - Time required to complete a particular step in producing an order Total (Remaining) Processing Time - The total (remaining) processing time of an order Due Date - The time we have promised the customer (or MPS calls for) order delivery Flow Time - The actual total time required for an order to flow through the shop from release to completion Slack Time (at time t ): (Due Date - t ) – (Total Remaining processing time) Lateness - The amount, if any, by which an order is late Queue - The jobs waiting to be processed at a single workstation
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12/02/2010 5 Scheduling Job Shops L L L L L L L L L M M M M M M M M M D D D D D D D D D G G G G G G G G G Lathes Drill Presses Milling Machines Grinders Large inventories Complex routings Machines scheduled individually Machines independent
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12/02/2010 6 Scheduling Job Shops (job routings may vary) Objectives: Meeting job due dates while maintaining high utilization of resources (minimize idle time). Key inputs:
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This note was uploaded on 12/28/2011 for the course SCM 372 taught by Professor Cook during the Fall '11 term at Michigan State University.

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23_posting_-_Scheduling - Operations Scheduling A schedule...

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