3D Laser

aPriori uses the formulas below to determine costs associated with these processes.

Accounting Calculations

Labor Time = Cycle Time * Number of Operators

Labor time is the product of the following

• Cycle time (see Cycle Time Calculation)

• 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 + 1 / 3600) *
Labor Rate

Labor cost is a function of the following:

• Labor time (see formula above)

• 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 + Direct Overhead Rate)) /
Batch Size

Amortized batch setup cost depends on the following:

• Machine setup time (specified as a machine property)

• 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)

• Direct overhead rate (see Direct and Indirect Overhead)

• Batch size (specified in the Production Info dialog)

Cycle Time Calculation

Cycle Time = Cut Time + Pierce

Cycle time depends on the following:

• Cut time, which is the product of the following:

  • Part perimeter (obtained from GCD extraction)

  • Laser feed rate (based on lookup in sm3DLaserCutRate by power requirement)

• Pierce time (based on lookup in sm3DLaserCutRate by power requirement)

Tolerance capability by hole diameter is contained in the lookup table toleranceCapability.