Sheet Metal Stamping & Press Lines worked example
Inspection Sampling at 99% sampling coverage rate: a worked example in sheet metal stamping & press lines
This scenario runs the inspection sampling calculation on the strong side: 99% sampling coverage rate, with every other input held at its documented default. Use it when inspection sampling in sheet metal stamping and press lines is being committed and you need a throughput number you can defend.
The inputs for this scenario
- Parts checked in the run: 1,200 units (unchanged)
- Inspection window duration: 8 hr (unchanged)
- Sampling coverage rate: 99 % (raised for this scenario; the documented default is 90)
Working through the calculation
- Applying the documented formula (Raw inspection sampling = completed output รท runtime) to the inputs above produces each figure below.
- At this operating point the engine returns 149 units for effective throughput, the number this scenario is built around.
- At this operating point the engine returns 150 units for raw throughput.
- At this operating point the engine returns 99 % for efficiency.
- At this operating point the engine returns 8 hr for runtime.
How this compares with the baseline
- Against the tool's baseline example, where sampling coverage rate sits at 90% and the headline result is 135 units, this scenario comes in 10% above the baseline at 149 units.
- Use it when setting an in-process sampling plan, auditing whether inspection cadence matches press speed, or sizing inspector workload on a line. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.
Results at a glance
- Effective throughput: 149 units (headline result)
- Raw throughput: 150 units
- Efficiency: 99 %
- Runtime: 8 hr
Run it with your numbers
- Every input above is editable in the live Inspection Sampling calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.