222085 Issue 1 - Horizon APiX Appendix Manual - 第75页

TECHNICAL REFERENCE APPENDIX CALIBRATIONS 3.38 Appendix to Micron Technical Manuals Chapter Issue 1 June 15 average of these dif ferences are calculate d, recorded and used a s part of the calibration dat a. Calibration …

100%1 / 166
TECHNICAL REFERENCE APPENDIX
CALIBRATIONS
Chapter Issue 1 June 15 Appendix to Micron Technical Manuals 3.37
NOTE
The numerals on the rule may not be directly in the field of view, move the
rule until the numerals are visible in the vision window. Lay the rule flat on
the board, do not lift or angle it as this can distort the measurement. As the
board stop is before the camera the distance is recorded as a minus reading.
41. Remove the rule from the machine.
42. Close the front printhead cover.
43. Press the System button.
44. Select Exit.
45. During Initialisation, remove the board from the transport rails when
prompted.
46. Select Continue.
47. Select Back.
48. Select Maintenance.
49. Select Machine Setup.
50. Select Basics.
51. Select Board Stop X Offset.
52. Enter the dimension obtained in Step 40.
53. Select Accept.
54. Select Back.
55. Select Back.
56. Select Back.
Vision System
Calibration
For the vision alignment to function accurately a full system calibration is
required. This should be carried out by the maintenance personnel at the
required period.
The calibration of the vision system is carried out in two stages using a
calibration screen (Part No. 134764) and a calibration board (Part No. 134765).
The first stage, Calibrate Vision, details the calibration of X, Y and Theta.
Calibrate Video X, Y calculates the screen movement in millimetres to vision
system pixels. This is achieved by looking up at the calibration screen fiducials
and moving the screen in the X and Y directions by a fixed amount, for each of
the 25 fiducials.
The movements are calculated for each fiducial and the mean taken. This
average screen movement is recorded and used as part of the calibration data.
Calibrate Theta calibrates the screen theta movement. The camera selects
three screen fiducials and the screen moves in theta (using the two X axes and
implementing +2mm in X rear and -2mm in X forward to achieve the theta
movement). The movements are calculated for each fiducial and the average
taken. The data is recorded and the calibration is complete.
The second stage, Calibrate Offset is to compensate for any optical discrepan-
cies of the telecentric camera between viewing up and down. This is achieved
by printing the calibration screen and measuring the differences between the
centroid of the screen fiducials and the centroid of the printed fiducials. The
TECHNICAL REFERENCE APPENDIX
CALIBRATIONS
3.38 Appendix to Micron Technical Manuals Chapter Issue 1 June 15
average of these differences are calculated, recorded and used as part of the
calibration data.
Calibration
Procedure
NOTE
The vision height adjustment must be carried out prior to calibrating the vision
system.
The calibration sequence is as follows:
• Stage 1 - Calibrate Vision
• Stage 2 - Calibrate Offset
Stage 1 - Calibrate
Vision
NOTE
ASM recommends that the calibration board and screen are cleaned with
Isopropyl Alcohol (IPA) impregnated lint free wipe prior to calibrating vision or
offset.
1. Select Maintenance.
2. Select Machine Setup.
3. Ensure that the Screen Size parameter is set to 265.
4. Select Back.
5. Select Back.
6. Select Setup Product.
7. Select Load Product.
8. Select Calibra.
9. Select Load.
10. Select Back.
11. Select Back.
12. Select Unload Screen.
13. Open the front printhead cover.
14. Remove the screen and fit the calibration screen.
15. Close the front printhead cover.
16. Press the System button.
17. Select Setup Product.
18. Select Fiducials.
19. Select Global Settings.
20. Ensure that Alignment Mode is set to 2 Fiducial.
21. Select Back.
22. Select Back.
23. Select Back.
24. Select Maintenance.
25. Select Calibrations.
26. Select Vision.
SEMI 2
TECHNICAL REFERENCE APPENDIX
CALIBRATIONS
Chapter Issue 1 June 15 Appendix to Micron Technical Manuals 3.39
27. Select Screen OK.
28. Select Use Screen, if displayed.
29. Load the calibration board on to the input conveyor.
30. Select Auto Board, the board moves to the board stop position.
31. Select Step, the board is clamped and the board stop retracts.
32. Select Step, the camera moves to the first screen fiducial and the squeegee
moves to dwell height.
33. Using the Incr. and Decr. buttons and viewing the right hand side of the
vision monitor, position the screen fiducial so that it is placed centrally with
the box displayed.
34. Select Step, the camera moves to the second screen fiducial. Position the
fiducial centrally with the box as previously described.
35. Select Step, the camera moves to the third screen fiducial. Position the
fiducial centrally with the box as previously described.
36. Select Step, the camera moves to the fourth screen fiducial. Position the
fiducial centrally with the box as previously described.
37. Select Step.
The control screen displays the following message, ‘Printer configuration
data file saved’.
38. Select Board Fid Setup and set up the board fiducial on the left side of the
vision monitor.
NOTE
If the board fiducial is not visible and cannot be brought into view by small
adjustments, in the camera axis diagnostic, check the reference position on
the front rail. If the front rail reference position is incorrect, adjust its position.
If the reference position is correct contact Customer support Group for
assistance. See also below.
39. If any changes have been made, select Learn Fiducial. If no changes have
been made, select Locate Fiducial.
40. Select Exit.
41. Select Scrn Fid Setup and set up the screen fiducial on the right side
of the vision monitor.
42. If any changes have been made, select Learn Fiducial. If no changes have
been made, select Locate Fiducial.
43. Select Exit.
44. Select Single, the camera locates all 25 fiducials.
45. Select Continue.
46. Select Auto Board.
47. Remove the board from the transport rails.
48. If the Calibrate Offset is to be performed, go to Step 4 of Stage 2 - Calibrate
Offset.
49. Select Exit.
50. Select Back.