Daan-
I would program it as a rectangle with the shortest side of the "trapezoidal
termination" to be the short side of the rectangle. Build in some acceptable
tolerances and teach the vision system.
Remember the vision system does not seen the part as we see it (Color,
size....).
I can send you an altered copy of the picture if more explanation is needed.

Cal
Equipment Advisory Board
ACI
Philadelphia

°-----Original Message-----
°From: TechNet [mailto:[log in to unmask]]On Behalf Of d. terstegge
°Sent: Friday, May 11, 2001 4:39 AM
°To: [log in to unmask]
°Subject: [TN] Pick&place of white coil
°
°
°Hi All,
°
°I just sent Steve a photograph that he genereously placed on in
°his CyberHouse at http://stevezeva.homestead.com/index.html. It's
°a picture of a Coilcraft coil with a white bottom and goldplated
°terminations.
°Our designers are planning to use these parts on some of our new
°products, but unfortunately the placement on our Philips
°(Assembleon) machines is inaccurate due to the fact that there's
°not enough contrast for recognition by the vision-system. Both the
°gold and the white substrate are highly reflective when
°illuminated on the vision system.
°
°Our designers see this coil as just another standard part, and
°they don't want to hear about any such problems.
°To my opinion it is ridiculeous that component manufacturers make
°their parts like this (I mean they could give some surface
°treatment to their alumina substrates).
°
°I really like to know how other Techies think about this. Is this
°a standard part that needs an in-house technical solution, or
°should a Smart Designer try to avoid using such parts ?
°
°Kind regards,
°
°Daan Terstegge
°Unclassified mail
°Personal Website: http://www.smtinfo.net
°
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