0197787-01_UM_HeadVerification_708_EN - 第34页
SIPLACE Head V erification User Manual Edition 01/2015 34 Measurement steps: 1. The Z axis rem ains in the top position 2. All DPs are referenced so that the y are at 0°. 3. Segment 1 is rotated into the placem ent posit…
SIPLACE Head Verification
User Manual Edition 01/2015
33
4.4.4 Meaning of the Results
"End position Z" errors at all segments:
1. Z axis linear guide is defective
Replace complete Z axis unit
"End position Z" errors at individual segments:
1. If all "Measure 1" – "Measure 3" values are outside the tolerance, this indicates that the linear
guide of the segment (CPP) or the DP (CP20P/A) are defective
CPP: Replace the linear guide for the segment
CP20P/A: Replace the DP
2. If only "Measure1", "2" or "3" are outside the tolerance, an increasing difficulty of movement is
present.
CPP: Prepare replacement of the linear guide for the segment
CP20P/A: Prepare replacement of the DP
4.5 "Cover Switching Ring Mounting" Measurement
The following tools are required for these measurements:
CP20A: 20x nozzle type 1069 03094112-01 (vacuum nozzle red, closed)
4.5.1 Explanation of Measurement – Procedure
This measurement checks the correct installation of the cover switching rings. The cover switching
rings are a key part of the CP20A heads and are responsible for correct triggering of the Z-down light
barrier.
The voltage value for the Z-down light barrier is checked, while the segment is rotated in 90° steps.
This gives an idea of whether the cover switching ring is defective, tilted or dirty.
The results of these measurements provide feedback about the following sources of errors:
1. State of Z-down light barrier
2. Installation error for cover switching ring on DP
3. State of cover switching rings
SIPLACE Head Verification
User Manual Edition 01/2015
34
Measurement steps:
1. The Z axis remains in the top position
2. All DPs are referenced so that they are at 0°.
3. Segment 1 is rotated into the placement position but remains in the top position.
4. Measurement 0°:
The Z-down light barrier is triggered and measures the distance to the cover switching ring for
segment 1.The Z-down light barrier provides an analog voltage value for the distance. This
value is known as Measure 1 [mV].
This 0° value is also used as a reference value for checking the general functionality of the
light barriers.This reference value is compared to a theoretical value in the machine data.
5. Rotate segment 1 to 90°
6. Measurement 90°:
The Z-down light barrier is triggered and measures the distance to the cover switching ring for
segment 1.The Z-down light barrier provides an analog voltage value for the distance. This
value is known as Measure 2 [mV].
7. Rotate segment 1 to 180°
8. Measurement 180°:
The Z-down light barrier is triggered and measures the distance to the cover switching ring for
segment 1.The Z-down light barrier provides an analog voltage value for the distance. This
value is known as Measure 3 [mV].
9. Rotate segment 1 to 270°
10. Measurement 270°:
The Z-down light barrier is triggered and measures the distance to the cover switching ring for
segment 1.The Z-down light barrier provides an analog voltage value for the distance. This
value is known as Measure 4 [mV].
11. The whole rotation of the cover switching ring is known as the Mounting variation [µm]
value.
This value is calculated using the minimum and maximum results for "Measure 1" – "Measure
4". The difference between the lowest and highest voltage value provides a value which
describes the eccentricity of the cover switching ring and the rotation of the cover switching
ring around the central axis of the DP (sway).
If this value is higher than a defined tolerance, this indicates that the cover switching ring is
not correctly fitted or that it is defective.
12. Measurements 4-11 are now performed for all other segments.
SIPLACE Head Verification
User Manual Edition 01/2015
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4.5.2 Explanation of Measurement Results in Progress Menu
After completion of the measurement, the following results appear in the "Progress" menu:
Figure 22: Cover switching ring mounting result
Legend:
1. Segment measured
2. Calculated Mounting variation value in µm
This value describes the eccentricity (rotation) of the cover switching ring to the central axis
of the segment.
This value is calculated by finding the difference between the lowest and highest analog
voltage value for "Measure1"-"Measure4".
3. Results display (OK green tick / NOK red X)
4. This is the permissible threshold for eccentricity (rotation) of the cover switching ring. The
Mounting variation (2) value and the result (3) refer to this threshold.
5. Measure1 – Measure4 provide the analog voltage values for the light barrier measurement
and show the distance between the Z-down light barrier and the edge of the cover switching
ring at 0°, 90°, 180° and 270°.
6. The Sensor value (min / max) in µm gives the plausible permissible threshold values for
"Measure1" – "Measure4".
7. This diagram illustrates the Mounting variation values for the segments.
Blue line Mounting deviation in µm for individual segments
Red border Min and max tolerances (in our case 0..400mV)
Use the button to zoom in on the diagram.
8. This diagram illustrates the "Measure1" – "Measure4" values for the segments.
Blue bar one bar each for "Measure1"(0°) – "Measure4" (270°)
If the light barrier works reliably, the bars should ideally be the
same height (100% concentricity) or convex/concave (eccentricity)
Red border Min and max tolerances (in our case 5000..6900mV)
Use the button to zoom in on the diagram.
4.5.3 Explanation of Measurement Results Using Results PDF
These results can be seen if you scroll down the "Summary" menu or generate a results PDF!