Electronics Forum | Fri Jul 19 16:27:38 EDT 2013 | microaide
I think I have the vision problems figured out. There were two problems. 1) The Alignment type was set to "Small" for my TQFP48 part. It should have been set to "Complete". This is a clear case of poor documentation. The AutoProgram manual lists the
Electronics Forum | Mon Jul 15 19:18:51 EDT 2013 | microaide
Does anyone know how to make the vision alignment work on a Quad 4C? What I mean is make it work right, and reliably. I know how to define the component for inspection (lead pitch, lead count, dimensions, tolerances, etc.), and I know how to set ligh
Electronics Forum | Mon Jul 22 05:03:45 EDT 2013 | bobpan
That documentation was written 20 years ago and was meant to be a reference for the software. To use autoprogram...engineers would take a 3-5 day class. It simply was not supposed to be learned from a manual.
Electronics Forum | Thu Jul 18 05:05:34 EDT 2013 | bobpan
Make sure that the lens is clean and you dont have any parts down inside on the camera. Also sometimes the leds that shine up to the part are bent in crazy directions. Make sure they look like they are all aimed up at the same direction. Is the brigh
Electronics Forum | Wed Aug 27 13:50:57 EDT 2014 | mcapizzi
The superior machines typically use only a split vision system which allows two pictures to be viewed simultaneously. The PCB (pads) and the underside (balls) of the BGA can be observed. By using micrometer screws, both exposures can be adjusted exac
Electronics Forum | Thu Aug 28 15:29:50 EDT 2014 | mcapizzi
Yes, your picture is correct. Regarding the dichroic mirrored prism assembly…in this application, a dichroic material is one which causes visible light to be split up into distinct beams of different wavelengths. The original meaning of dichroic, fro
Electronics Forum | Thu Aug 28 12:42:53 EDT 2014 | mcapizzi
One camera is used with typically one of the following prism set-ups: The split prism system, in its most common form, is a cube made from two triangular glass prisms which are glued together at their base using polyester, epoxy, or urethane-based ad
Electronics Forum | Fri Dec 19 12:43:01 EST 2014 | emeto
I had some of these before and they do a decent job. Laser alignment is ok for passive components. Compared to vision systems it has mainly disadvantages. If you have bended lead on IC for example, it wouldn;t catch it and it will place the part. I w
Electronics Forum | Thu Dec 18 14:38:58 EST 2014 | rangarajd
Hello, I don't have any experience with Juki. Visited one of their booth recently and I was told they use a laser for alignment. How does this work? Is there any advantage over the traditional vision alignment? Thanks!
Electronics Forum | Sun Dec 21 23:30:09 EST 2014 | sarason
Since the Laser alignment bit is attached to the head and you don't have to move the part to a camera location, before placing the component on the board it is about the fastest method there is of getting accurate component alignment. With more moder
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