Daan,
I have come across similar problems where the part is not suitable for
automatic handling.
My solution is to encourage/force the designers to submit all potential
components for approval by the production and test departments before they
can be used.
Like a lot of aspects of Design for Manufacture this does place an extra
burden on the designers, but that is better than chucking an unsuitable
design over the wall
to cause problems later. All parties concerned need to be clued up on what
makes up the "works cost".
Regards
Eric Dawson
> -----Original Message-----
> From: d. terstegge [SMTP:[log in to unmask]]
> Sent: 11 May 2001 9:39
> 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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