Turret Press Material Cost and Utilization
Material Cost = ((Material Cost Per Mass * Part Mass) / Utilization) / Final Yield
aPriori calculates the cost for material based on the following factors:
• Material cost per mass (determined from Material Stock if stock is selected; otherwise, from Material Composition in the Material Selection dialog)
• Part mass (product of part volume and material density—see the
Part Volume PSO and the
Density property in the Materials table)
• Utilization (see formula below)
• Final Yield (see
Yields)
Utilization = Part Mass *Number of Parts per Sheet / Stock Mass
Utilization depends on the following:
• Part mass (product of part volume and material density—see the
Part Volume PSO and the
Density property in the Materials table)
• Number of parts per sheet (see below)
• Stock mass (see formula below)
Number of Parts per Sheet
aPriori calculates this value by finding the maximum number of parts that can fit on a sheet of stock, with the parts oriented either lengthwise or widthwise. It takes into account the following measurements:
• Part spacing. This is specified by the PSO
Part Spacing for Rectangular Nesting. If the PSO is not supplied, the machine property
Part Spacing is used. If the PSO is not supplied and the machine property is not present, the cost model variable
rectangularPartSpacing is used.
• Sheet lengthwise margin (trim strip width specified by the machine property Sheet Length Trim Strip)
• Sheet widthwise margin (trim strip width specified by the machine property Sheet Width Trim Strip)
Stock Mass = Stock Length * Stock Width * Stock Thickness * Material Density
Stock mass is the product of the following:
• Stock length (specified by the cost model variable
defaultSheetLengthTurretPress, or the PSO
Stock Sheet Length)
• Stock Width (specified by the cost model variable
defaultSheetWidthTurretPress, or the PSO
Stock Sheet Width)
• Stock thickness (specified by the PSO
Thickness of Part)
• Material density (specified by the Density property in the Materials table)