CM602all_EJM8AESM_Service Manual - 第237页

If there is a table whose average is 0.005 or more correct the mounting position following the procedures below: Precision data offset Average of X-axis values……Xave Average of Y-axis values……Yave Mounting position offse…

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Light Transfer-Head Assembly (8 nozzles)
Remove the components from the board.
ITEM REMARKS
37
Once the teaching is finished,
remove the light box.
Maintenance Adjustment
38
Remove the board.
EJM8A-E-SMA040207-A01-00
Page　4-2-7-12
If there is a table whose average is 0.005 or more
correct the mounting position following the procedures below:
Precision data offset
Average of X-axis values……Xave
Average of Y-axis values……Yave
Mounting position offset
X(mm) value ……… Xos
Y(mm) value ………Yos
From the preset mounting position offset ([Preset Xos]
Preset Yos]) and the average of precision data ([Xave, Yave]),
mounting position offsets to be set ([New Xos][New Yos]) are
calculated as follows:
Enter the mounting position offset ([New Xos][New Yos]).
Then follow Steps 25 to 31and carry out accuracy (precision)
test.
Right front reference
[
New Xos
]
＝
[
Preset Xos
]
＋Xave
[
New Xos
]
＝
[
Preset Xos
]
－Xave
[
New Yos
]
＝
[
Preset Yos
]
－Yav
e
[
New Yos
]
＝
[
Preset Yos
]
＋Yav
e
Left front reference
[
New Xos
]
＝
[
Preset Xos
]
－Xave
[
New Xos
]
＝
[
Preset Xos
]
＋Xave
[
New Yos
]
＝
[
Preset Yos
]
－Yav
e
[
New Yos
]
＝
[
Preset Yos
]
＋Yav
e
Right inner-side reference
[
New Xos
]
＝
[
Preset Xos
]
＋Xave
[
New Xos
]
＝
[
Preset Xos
]
－Xave
[
New Yos
]
＝
[
Preset Yos
]
＋Yav
e
[
New Yos
]
＝
[
Preset Yos
]
－Yav
e
Left inner-side reference
[
New Xos
]
＝
[
Preset Xos
]
－Xave
[
New Xos
]
＝
[
Preset Xos
]
＋Xave
[
New Yos
]
＝
[
Preset Yos
]
＋Yav
e
[
New Yos
]
＝
[
Preset Yos
]
－Yav
e
Maintenance Adjustment Light Transfer-Head Assembly (8 nozzles)
Procedures for Entering the Mounting Position Offset
Front Rear
Rear
Rear
REMARKS
39
Front
Front
ITEM
RearFront
Xave
Yave
Xos
Yos
Enter new Xos.
Enter new Yos.
EJM8A-E-SMA040207-A01-00
Page　4-2-7-13
Three types of data (Front, Rear, Front and Rear Total) are shown in the precision data.
The reason that the X-axis Cpk value of Front and Rear Total drops slightly even though the value
of each side (front and rear) is appropriate is that there is a large difference between the maximum
and the minimum of the rear X-axis (Ideal difference: 0). (Opposite sign) See the graphs below:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Fig40-2(1) correction
From data
Difference of Min. and Max./2=
(
0.027+0.004
)
/2=0.01
5
(Fig.40-1)
0.015-0.027＝-0.012
Enter -0.012 into the rear X-axis mounting position offset so that the Cpk will become similar
to the dotted line on Graph (1) (Correction target).
For the Y-axis: Although the graph is shifted to the negative side by 0.010 (fug40-3(2)), the FY
and the RY are so balanced that the Cpk does not drop.
It is recommended that the front offset be 0 (*); enter the rear offset only.
If the average exceeds 0.005, carry out Adjustment Step 39. In this case, enter an offset.
* Enter "0" into the front offset and adjust with the rear offset so that the Cpk will become the target value.
Maintenance Adjustment Light Transfer-Head Assembly (8 nozzles)
000
-0.060　LESS
000
000
-0.053　～　-0.059
000000
-0.046　～　-0.052
000
0000 00
-0.039　～　-0.045
000000
-0.032　～　-0.038
316
-0.025　～　-0.031
010001
-0.018　～　-0.024
130
49 20 91
-0.011　～　-0.017
714023737
-0.004　～　-0.010
19 42 1
12 85 37
0.003　～　-0.003
39 38 28 37 67 75
0.010　～　0.004
44 25 41
1202
0.017　～　0.011
15 4 39 3 54 7
0.024　～　0.018
3117
000
0.031　～　0.025
002020
0.038　～　0.032
000
000
0.045　～　0.039
000000
0.052　～　0.046
000
0
FY軸 RX軸
0.059　～　0.053
000000
SX軸
ITEM REMARKS
前側 前後合計
40
Procedures for Entering the Mounting Pos
後側
SY軸
0.060　OVER
0
範囲 FX軸
0000
RY軸
0.050
Tolerance
1959
-0.050
0.050
-0.050
1.330
0.027
-0.021
0.021
-0.018
0.040
0.003
0.008
2.091
FX-axis
2.059
0.020
-0.026
0.019
-0.025
0.044
-0.003
0.008
2.152
FY-axis
Front
1.708
0.032
-0.019
0.027
-0.018
0.046
0.007
0.008
1.976
SX-axis
2.078
0.020
-0.026
0.019
-0.025
0.044
-0.003
0.008
2.213
SY-axis
Front & Rear Total
1.819
0.032
-0.011
0.027
-0.004
0.032
0.010
0.007
2.299
RX-axis
2.124
0.018
-0.026
0.019
-0.021
0.040
-0.004
0.007
2.307
RY-axis
Rear
A
ve+3σ
A
ve-3σ
MAX
MIN
Range
Ave
σ
Cp
Cpk
Item
Fig.38-1
0
10
20
30
40
50
0.060　OVER
0.059　～
0.053
0.052　～
0.046
0.045　～
0.039
0.038　～
0.032
0.031　～
0.025
0.024　～
0.018
0.017　～
0.011
0.010　～
0.004
0.003　～　-
0.003
-0.004　～　-
0.010
-0.011　～　-
0.017
-0.018　～　-
0.024
-0.025　～　-
0.031
-0.032　～　-
0.038
-0.039　～　-
0.045
-0.046　～　-
0.052
-0.053　～　-
0.059
-0.060　LESS
0
10
20
30
40
50
0.060　OVER
0.059　～
0.053
0.052　～
0.046
0.045　～
0.039
0.038　～
0.032
0.031　～
0.025
0.024　～
0.018
0.017　～
0.011
0.010　～
0.004
0.003　～　-
0.003
-0.004　～　-
0.010
-0.011　～　-
0.017
-0.018　～　-
0.024
-0.025　～　-
0.031
-0.032　～　-
0.038
-0.039　～　-
0.045
-0.046　～　-
0.052
-0.053　～　-
0.059
-0.060　LESS
X-axis graph
Y-axis graph
0point
FXRX
FY
RY
0point
Correction target
-0.0500.050
-0.050
0.050
Fig.40-2
Fig.40-3
(1)
(2)
EJM8A-E-SMA040207-A01-00
Page　4-2-7-14