106
Mahr GmbH • Digimar 817 CLM
7.6
Control limits based on measuring
values
1. <-_______
2. Learn programming (teach - in)
3. Create new program
4. Change existing program
5. Print out current program
6. UCL / LCL computation (measured values)
7. UCL / LCL computation (tolerances)
8. Menu program file management
9. Menu data file management
10.Program START
In order to compute the control limits, usually 50
workpieces of a homogeneous lot are inspected.
A lot is considered homogeneous if all workpieces
were
produced one after the other in the usual
manufacturing
rhythm and all measured workpieces are within the
tolerance limits.
Compute UCL and LCL
PRG1
09:57
04/Sep/06
755
TEST1
09:59
04/Sep/06
1175
TEST5
10:18
04/Sep/06
587
248/8083 Read. 3/80 blocks 3/40 Files
ON
OFF
Start : 01.02.2007
Stop:
28.02.2007
MACHINE
5
TESTING
OPERATOR
2
BROWN
SHIFT
2
S2
TOOL
2
MEDIUM
CUSTOMER
2
BB
SAMPLE COMM
4
Q4
All parts
Parts n.:1 - 9999
ON
OFF
** 100 % monitoring required **
Step
:
2. Contact above
-0.1879
:
Cpk is too low!
1.
Copy new limits into program
2.
Maintain old control limits
Calculation takes place
The control limits are computed on the basis of all
measuring values saved under the name of the
measuring program. Therefore, the automatic
computation of control limits should only be used for
newly created programs.
Please remember that control limits for an existing
program can only be calculated and entered anew, if
the Cpk value is larger than 1.00. (For values below
1.00, a warning is given).
Содержание Digimar 817 CLM
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