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Table 2

Parameters used in cost modeling.

Denotation Definition
CCM (20k) “Total unit cost” in CM_20k case
CCM (100k) “Total unit cost” in CM_100k case
CAM_method_A “Total unit cost” in AM method_A case
CAM_method_B “Total unit cost” in AM method_B case
n “Part counts”
O “Other unit cost” in production, which is a very small amount and volume independent
This is the summation of CM assembly, operator, and materials; the machine cost approaches 0 independent of the batch size; and the “O” value is assumed to be the same for both CM_20k and CM_100k
TCM (20k) “Tooling unit cost” (mold design cost breakdown + mold cost) in CM_20k case
TCM (100k) “Tooling unit cost” (mold design cost breakdown + mold cost) in CM_100k case
M “Mold design cost,” which is one time cost per batch, a constant, and volume dependent
m “mold unit cost” in production, which is a constant and volume independent

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