|
The following Measurement System Analysis (MSA)
was conducted on the Process
Optimization Device (P.O.D.)
system used to measure the accuracy of production equipment.
All results were calculated using Minitab version 14 statistical
analysis software. Measurement system analysis is used
to assure that the measuring system has adequate reproducibility
and repeatability. The purpose of the study was to make
sure that outputs from the P.O.D. were based on Process
Variation and not Measurement Error. |
| A gage R & R was then performed on the P.O.D.
using chip parts. The application of Six Sigma requires
that a measurement system analysis be performed to determine
accuracy for capability measurements. Using Six Sigma
standards a Gage R&R less than 10 is excellent, and
the measurements can be used for process improvement.
A Gage R&R from 10 to 30 is acceptable, but readings
can only be used for process monitoring and not for process
improvement. Gage R&R results above 30 cannot be used
because the variation is too high. |
| The Gage R&R results below are for each axis, (X
Y Q). Notice all results are well within the excellent
range of less than 10. This means the P.O.D.
introduces no statistically significant amount of variation
to the readings, and can be used for process improvements. |
Gage R&R Results
Summary
| "X" Axis |
1.56 |
| "Y" Axis |
3.47 |
| "Q" Axis |
3.51 |
|
A complete MSA for the P.O.D.
is available upon request. |
