00193407-02 HWWS SIPLACE Machine Accuracy EN.pdf - 第74页
© Siemens AG . . Änderungen vorbehalten SIPLACE Placement Systems -80 -60 -40 -20 0 20 4 0 6 0 x-offset [µm] -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 y-offset [µm] X-Y-Diagramm Aus gangszustand x-axis y-axis average v…
© Siemens AG . . Änderungen vorbehalten
SIPLACE
Placement Systems
-85.0 -70.0 -55.0 -40.0 -25.0 -10.0 5.0 15.0 30.0 45.0 60.0 75.0 90.0
x-offset [µm]
0
1
2
3
4
5
6
7
8
9
10
11
12
13
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15
16
x-axis
example 1: average value adjustment by use of a simple offset:
¾ frequency plot
Average Value (shifted)
© Siemens AG . . Änderungen vorbehalten
SIPLACE
Placement Systems
-80 -60 -40 -20 0 20 40 60
x-offset [µm]
-60
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
y-offset [µm]
X-Y-Diagramm Ausgangszustand
x-axis
y-axis
average value adjustment by use of a simple offset:
¾ x-y-plot
X-Y-diagram: placement 1
x-axis
Average Value (shifted)
© Siemens AG . . Änderungen vorbehalten
SIPLACE
Placement Systems
possible reasons
¾ placement machine works with two different operation positions.
In this case, the standard deviation value increases
¾ target value (C
m
- value) not achieved
¾ average value of all placement positions for each individual head is different to the ideal
placement position
¾ all placement positions of each individual head have the same offset
Attention:
- overall average value of both heads can be in tolerance
- offset correction can be performed in the software
Example 1: Offset between heads