Micron Technical Reference V9 Volume 4.pdf - 第45页
STINGER CALIBRATIONS Chapter Issue 2, Aug 14 Technical Reference Manual 38.21 CALIBRA TIONS Creating a Calibration T est Product A calibration test product is a useful tool to have and can be created using a blank board.…
STINGER
REPLACEMENT PROCEDURES
38.20 Technical Reference Manual Chapter Issue 2, Aug 14
Level Sensor
Replacement
1. Isolate the printer from the pneumatic supply and lockout the mains electri-
cal isolator.
2. Open the printhead front cover.
3. If fitted, remove the screen.
4. Pull the camera carriage to the front of the printer.
5. Remove the two M2.5 x8 countersunk head screws, which secure the cover.
6. Remove the cover.
7. Remove the syringe assembly so that it is out of the way.
8. Remove the two M3 x 16 cap head screws that fasten the sensor to the
mounting plate.
9. Remove the sensor.
10. Unscrew the connector from the sensor body.
11. Reconnect the replacement sensor and refit it to the mounting plate.
12. Refit the syringe assembly.
13. Load the screen.
14. Close the printhead front cover.
15. Reconnect the printer to the pneumatic supply and unlock the mains elec-
trical isolator.
16. Switch the mains isolator ON.
17. When requested, press the System button.
18. Run a test product to check functionality.
Mounting Plate
Level Sensor
STINGER
CALIBRATIONS
Chapter Issue 2, Aug 14 Technical Reference Manual 38.21
CALIBRATIONS
Creating a
Calibration Test
Product
A calibration test product is a useful tool to have and can be created using a
blank board. The checklist for the test product should include positional accu-
racy tests and deposit consistency checks.
Running a test product pre-production exercises the system and eliminates any
minor discrepancies that may occur due to the physical properties involved in
the process.
An example of a test product is shown below, it should be representative of a
production board.
Select Maintenance \ Test Cycles to turn Data Logging ON. Turning data
logging on allows the user to monitor the height of readings taken at the top
surface of the product. The centre and four outside test points give global board
topography, however, a localised view requires device level measurement.
Calibrated Offsets NOTE
Program the offset tests below to perform multiple deposits on one site only, at
the centre of the calibration board. This prevents the system from depositing
and / or measuring at every programmed site, and allows the opportunity to
make accurate measurements from a single location.
1. Select Open Cover and load a screen.
2. Select Close Cover.
3. Press the System button to restore system power.
4. Select Load Screen.
5. Select Maintenance.
6. Select Machine Setup.
NOTE
Measurements are made reference to X=0, Y = 0
10 Steps
50 Steps
100 Steps
Product Centre 110, 80
(Purge Process Point)
Dispense
Dispense
Dispense
Top Left 10, 150
Bottom Left 10, 10
Bottom Right 210, 10
Sacrificial Purge Points
Top Right 210, 150
Measure
Measure
Measure
Measure & Dispense
STINGER
CALIBRATIONS
38.22 Technical Reference Manual Chapter Issue 2, Aug 14
7. Select Options. Select Stinger Options the stinger options page is dis-
played.
8. Select Stinger Calibrated Offset X to set the parameter initially to 0 (zero
offset). This parameter sets a factor to compensate for the offset of the
camera and the nozzle centres in the X plane.
The offset can be calculated by measuring a known point on a test product or
calibration board. Accurately draw a mark at this point and set up stinger to
dispense a corresponding dot. The measured difference between the mark and
the dot in the X plane is the value to be input. This can be any value between
-5mm and +5mm.
Camera Centre
Nozzle Centre
Y Offset
1.0 mm
X Offset -1.25mm
Product Centre 110, 80