Cleaning Formulas

Cycle Time = Process Time * Adjustment Factor

Cycle time is the product of the following:

• Process time: this is bounded below by the cost model variable minCleaningTime (60 seconds in starting point VPEs). Calculated process time (see formula below) is used if it exceeds this lower bound.

• Adjustment factor (specified by the cost model variable cycleTimeAdjustmentFactor). This factor is 1 in aPriori starting point VPEs. VPE administrators can modify cycleTimeAdjustmentFactor in order to adjust cycle times across processes within the current VPE.

Calculated Process Time = Clean Time + Reorient Time

Process time depends on the following:

• Clean time (see formula)

• Reorient time (see formula)

Clean Time = Surface Cleaning Area * Surface Cleaning Rate

Clean time is the product of the following:

• Surface cleaning area: this is the surface area of the part.

• Surface cleaning rate: this is specified by the machine property Plastic Cleaning Rate for materials with cut code 41, 42, 51, or 52; for all other materials it is specified by the machine property Metal Cleaning Rate.

Reorient Time = Number of Handling Operators * Handling Time per Operator

Load Time is the product of the following:

• Number of handling operators: this is looked up by weight in the lookup table tblHandlingTimes. Part weight is material density times part volume (blank area times blank thickness).

• Handling time per operator: this is interpolated from values looked up by part weight in tblHandlingTimes. Part weight is material density times part volume (blank area times blank thickness).