0197787-01_UM_HeadVerification_708_EN.pdf - 第82页

SIPLACE Head V erification User Manual Edition 01/2015 82 Meaning of the Results "Up X [µm]" and "Up Y [µm]" errors at all segment s: 1. Check the star zero point correction "Down X [µm]" an…

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SIPLACE Head Verification
User Manual Edition 01/2015
81
The "Variation Up X" [µm] (2) value illustrates the maximum dispersion between the segments for
"Segment offset up" in the X direction.
The "Variation Up X" [µm] is calculated as follows:
Variation Up X [µm] = Up X max [µm] – Up X min [µm]
Variation Up X [µm] = 76µm – (-32µm) = |108µm|
The "Variation Up Y" [µm] (3) value illustrates the maximum dispersion between the segments for
"Segment offset up" in the Y direction.
The "Variation Up Y" [µm] is calculated as follows:
Variation Up Y [µm] = Up Y max [µm] – Up Y min [µm]
Variation Up Y[µm] = 7µm – (-65µm) = |72µm|
The "Variation Down X" [µm] (4) value illustrates the maximum dispersion between the segments for
"Segment offset down" in the X direction.
The "Variation Down X" [µm] is calculated as follows:
Variation Down X [µm] = Down X max [µm] – Down X min [µm]
Variation Down X [µm] = 107µm – 0µm = |107µm|
The "Variation Down Y" [µm] (4) value illustrates the maximum dispersion between the segments for
"Segment offset down" in the Y direction.
The "Variation Down Y" [µm] is calculated as follows:
Variation Down Y [µm] = Down Y max [µm] – Down Y min [µm]
Variation Down Y [µm] = 64µm – (-19µm) = |83µm|
The "Down X" [µm] value for the segments n+1 refers to segment 1. The segment offset actually
measured for segment 1 to the PCB camera is determined with "dx Down" [µm] = -19µm. The value -
19µm is set as the reference value 0µm and results in " Down X" [µm] = 0µm for segment 1.
All other segment offset values "Down X" [µm] are calculated in dependence to the reference segment
1.
The following formula is applied for this:
Down X [µm] Seg (n) = dx Down [µm] Seg (n) - dx Down [µm] Seg 1
In our example (6) for segment 8, the "Down X" [µm] value for seg. 8 is calculated as follows:
Down X[µm] Seg 8 = 4µm – (-88µm) = 92µm
The "Down Y" [µm] value for the segments n+1 refers to segment 1. The segment offset actually
measured for segment 1 to the PCB camera is determined with "dy Down" [µm] = 32µm. The value
32µm is set as the reference value 0µm and results in " Down Y" [µm] = 0µm for segment 1.
All other segment offset values "Down Y" [µm] are calculated in dependence to the reference segment
1.
The following formula is applied for this:
Down Y [µm] Seg (n) = dy Down [µm] Seg (n) - dy Down [µm] Seg 1
In our example (7) for segment 8, the "Down Y" [µm] value for seg. 8 is calculated as follows:
Down Y [µm] Seg 8 = 63µm – (-1µm) = 64µm
SIPLACE Head Verification
User Manual Edition 01/2015
82
Meaning of the Results
"Up X [µm]" and "Up Y [µm]" errors at all segments:
1. Check the star zero point correction
"Down X [µm]" and "Down Y [µm]" at all segments:
1. Z axis linear guide loose or defective Check or replace the Z motor
"Up X [µm]" / "Up Y [µm]" / "Down X [µm]" / "Down Y [µm]" at individual segments:
1.
Segment deformed, possibly after a crash Replace segment / DP
2. Linear guide DP/segment worn out Replace the DP / replace the linear guide for segment
SIPLACE Head Verification
User Manual Edition 01/2015
83
5 Matrix for Cause and Errors Analysis
Figure 57: Error and analysis overview
Chapter Script´s CPP CP20P CP20A
Component sensor
(BE-Sensor)
DP Drive
Filterdisc
Preasureregulator Valve
Hoding Circuit
(Vacuum Hoses)
Placement Circuit
Star-Axis
Z-Axis
Lightbarrier Z-Down
Nozzle
(Nozzle seating)
Anti Glare Shield
Complete System
6.1 BE-Sensor voltage and z-heigths X X X
x
(if all segments are
effected)
x
(Ball bearing)
x
(if all segment
affected, tolerance in
the jaw )
6.2 Holding Circuit (sealed nozzle) X X X x x
6.3 Nozzle Spring X X X
x
(Spring force +
deflection way)
x
(Switch point light
barrier)
6.4 Z-Axis movement X X X
x
(Linear Guide)
x
(if all segment
affected, linear
x
6.5 Anti Glare Shield mounting x
x
(if all segments
affected)
x
6.6 Air & vacuum with head sensors X X X x x x
6.7 Head endurance run 01005 X X x
x
(Linear Guide, dp
rotation)
x x
x
(If all segment
affected, motor /
x x
6.8 Head endurance run LS X X X x
x
(Linear Guide, dp
rotation)
x x
x
(if all segments
affected)
x x x
Segment offset up (fast)
x
(Linear guide +
mounting
tolerance)
Segment offset down (fast) x x
6.10 Filter disc X x
6.11 Z/DP Positioning X x x x x
6.12 DP-Rotation test X X X
x
(DP rotation)
6.13 ZDS sensor values X x x
6.14 Component sensor calibration X x
Segment offset up
x
(Linear guide +
mounting tolerance)
Segment offset down x x
Headtype
Parts to be changed or analyzed
6.9
6.15
X
X
X
X