Measurement Systems Analysis (MSA)
•解析Resolution
–验证新的检查设备
Explain to the inspectors the purpose of the analysis and that the inspection system is being
研究
属性GageR&R举例20fail fail
21fail fail
22fail fail
Calculated Score
起始
10道10000000.0001 10000000.1024 1000000 5.9049 Number Of Consecutive Inspectors Required To Obtain An Escaping Defect Rate Of 3.4 ppm
50%
检I n
我们如何改进属性测量系统?
–确保所有测量的
Insure all measurements are made with the same standards
(σ2
总体
倚
测量的小比例
Lower range of measurements
Y
重复性
Repeatability
Gage Reproducibility
when measuring the identical characteristic
测量次序随机化
If the intent is to evaluate the measurement system throughout the process range, select parts throughout the range. Calibrate the gage or gages for the study. Remember linearity, stability and bias.
步骤9：提出结论，如有
Draw conclusions and make changes if necessary.
验
分别是10、
4.输入第4个命令后敲击数据表。

likely lead to a Bad Gage R&R!!
Gage R&R -举例STAT>Quality Tools>Gage R&R Study Crossed…
Process Tolerance is 0.7
率。

Total Variation 0.041602 100.00
total
MS
σσStudyVar %=
推荐的。

0.4
S
0.3
0.4
S
0.3
0.4
S
0.3
0.40.3
S 操作员的测量能力对象（操作员和产品之间在交互作用）
线条不平行或交(相交)
一于其线
0.40.3
S a 类似？或者某位操作员比类似？或者某位操作员比
0.4
S
0.3
0.380.48Part
or the measurement
system has shifted. In this case there are no trends.
不良的测量系统
可重新测量有问题
Operator/Machine by part interactions. Understand why the operator/machine had problems measuring some parts and not others. May want to re-measure the problem parts. The problem could be a result of gage linearity.
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5. 你们有30分钟。