aPriori uses the formulas below to determine costs associated with these processes.
Accounting Calculations
Labor Time = Cycle Time * Machine Labor Time Standard
Labor time is the product of the following
-
Cycle time (see Cycle Time Calculation)
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Machine labor time standard (specified as a machine property). This value reflects the amount of time spent by machine operators in between machine cycles, including time performing maintenance and cleaning tasks as well as time pausing between tasks. The amount is expressed as a cycle time multiplier.
Labor Cost = (Labor Time / 3600) * Labor Rate
Labor cost is a function of the following:
-
Labor time (see formula above)
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Labor rate: this is the product of the following:
- Machine property Labor Rate
- Cost model variable laborRateAdjustmentFactor (1 in starting point Digital Factories)
- Machine property Work Center Labor Rate Factor (1 in starting point Digital Factories)
Amortized Batch Setup =
Machine Setup Time * Labor Rate
Amortized batch setup is a function of the following:
-
Machine setup time (specified as a machine property)
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Labor rate: this is the product of the following:
- Machine property Labor Rate
- Cost model variable laborRateAdjustmentFactor (1 in starting point Digital Factories)
- Machine property Work Center Labor Rate Factor (1 in starting point Digital Factories)
Cycle Time Calculation
Cycle Time = (1 / Machine Cut Speed) + Handling Time
Cycle time depends on the following:
-
Machine cut speed
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Handling time (obtained from the lookup table smShearHandling, increases with part mass, which increases with material density)