DEK高级培训资料.pdf - 第217页
T OLERANCE T OLERANCE Cp = 2 Cpk = 2 Cp = 2 Cp = 2 Cpk = 2 Cp = 4 Cp and Cpk examples Issue 2: July 2007 Cp = 2 Cpk = 1 Cp = 2 Cpk = 1 Cp = 2 Cpk = 0.5 Cp = 4 Cpk = 1 Cp = 8 Cpk = 1 Cp = 1 Cpk = 1
Your turn…again!
A different archer also has a standard deviation
of 2 cm.
However he fires with an offset of 7 cm !
Calculate his Sigma, Cp and Cpk
Issue 2: July 2007
Sigma =
Cp =
Cpk =
25/2 = 12.5
Unchanged
Unchanged
Lower
50/12 = 4.17
18/6 = 3
TOLERANCE TOLERANCE
Cp = 2
Cpk = 2
Cp = 2
Cp = 2
Cpk = 2
Cp = 4
Cp and Cpk examples
Issue 2: July 2007
Cp = 2
Cpk = 1
Cp = 2
Cpk = 1
Cp = 2
Cpk = 0.5
Cp = 4
Cpk = 1
Cp = 8
Cpk = 1
Cp = 1
Cpk = 1
Cp = 4
Cpk = 4
Cp = 8
Cpk = 2
TOLERANCE
Cp and Cpk examples
Issue 2: July 2007
Cpk = 2
Cp = 16
Cpk = 2
Cp = 2
Cpk = 2
0