MSA測量係統分析報告(ppt 63頁)（英文版）

MSA測量係統分析報告內容提要：
Analysis Techniques: Preparation before MSA
The approach to be used should be planned.
The number of appraisers, number of sample parts, and number of repeat
readings should be determined in advance.
The appraisers should be selected form those who normally operate the
instrument.
The sample parts must be selected from the process and represent its entire
operating range.
The instrument must have a discrimination that allows at least one-tenth of
the expected process variation of the characteristic to be read directly.
The measurement procedure should be defined in advance to ensure the
consistent measuring method.
Analysis Techniques: Variable Gage Analysis
General Gage R&R Study:
The Average and Range Method
The ANOVA Method
The common step for conducting Gage R&R study:
1. Verify calibration of measurement equipment to be studied.
2. Obtain a sample of parts that represent the actual or expected range of process
variation.
3. Add a concealed mark to each identifying the units as numbers 1 through 10.
It is critical that you can identify which unit is which. At the same time it is
detrimental if the participants in the study can tell one unit from the other
(may bias their measurement should they recall how it measured previously).
4. Request 3 appraisers. Refer to these appraisers as a A, B, and C appraisers.
If the measurement will be done repetitively such as in a production environment,
it is preferable to use the actual appraiser that will be performing the measurement.
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