How to change camera focus and scaling

Written By: Hans Panz

Difficulty

Moderate

Steps

Time Required

No estimate

Introduction

If a work holder or indexer is changed or a new Product with different height is introduced.

The focus depth of the camera may not be enough to set a sharp focus. In this case one

has to change the Camera focus.

Place a Product on the work holder
Enter Mode#11
in Focus height enter the height you want to set ex. 5.000
Make sure that the camera focus is higher than any obstacle in the working area, tool inspection area and home position. In case of an indexer with product clamping, the Focus height has to be set over the Clamping height at open position.

for the setting you need a Hook key with pivot (delivered with the machine/ gray box) and a 1.5 hexagonal wrench

loosen the headless screw and remove the camera
now you can screw and unscrew the threaded lens barrel and control the focus by mounting the camera temporarily (without fixing it with the headless screw), do this till you have a focus on the screen.
once the image is sharply focused →screw the ring bolt tight using the special wrench

mount the camera and fix it with the headless screw → After every mechanical adjustment on the Camera, Scaling must be done again

in Menu Page#8 PRU Parameter - select the Tab PRU Scale make sure the pattern below is focused sharp and there is enough light. else set the light parameter
activate the XY key (active = red LED), use the track ball to move the head→select a high contrast unique pattern
Store trace
the machine starts to compute the scaling automatically (head moves back and forth during scaling)

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after the scaling computation is done a popup window as shown
if the value of New: Deviation is % < 0:2 → confirm the new Value with OK → else redo the scaling (try another pattern)
do offset correction in Mode3 after scaling
Once the camera focus is set and the scaling is computed, you need to do the Offset correction - Mode#3.

Conclusion

To reassemble your device, follow these instructions in reverse order.

Member since: 10/03/16

289 Reputation

Great step by step guide! I want more screen grabs though.