Stackup
Stack what you measure and what it must meet
Result
Contributors sens. +1 adds to the gap, −1 closes it, 0.5 for a diameter acting as a radius
| # | Dimension | Part / source | Nominal | Tol + | Tol − | Sens. | Distribution | k (σ at tol) | Var. share | Row actions |
|---|
Tolerances are magnitudes: 10 +0.05 / −0.02 shifts the mean to 10.015. Uniform suits flatness, float and clearance fits; triangular suits hand assembly; normal suits capable molded or machined features.
Distribution Monte Carlo of the assembled gap
Spec limits
Worst case
Mean
Simulated assemblies
Where the variation comes from
Loop diagram green opens the gap, red closes it, blue is the result
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