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A.P. Dr Shahrul Kamaruddin
Manufacturing Technology II MDB 3073
MAY 2017
Production rate Rp
Production rate for individual processing or assembly operation is usually expressed as hourly rate i.e. works unit
completed per hour (pc/hr).
Operation Cycle Time
2. Mathematical Models and Production Concepts
Typical cycle time for a production operation:
Tc=To+Th+Tth
where Tc= cycle time, To= processing time for the operation, Th= handling time (e.g., loading and unloading the production
machine), and Tth = tool handling time (e.g., time to change tools)
Batch production
In batch production, the time to process one batch consisting of Q work units: batch time Tb=Tsu +QTc
where Tb= batch processing time (min), Tsu= setup time to prepare for the batch (min), Q= batch quantity, Tc= cycle
time per work unit (min/cycle)
Average production time per work unit Tp=Tb/Q
Production rate (pc/hr)Rp=60/Tp