Subject: | |
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Reply To: | TechNet E-Mail Forum. |
Date: | Thu, 16 Jul 1998 13:39:11 -0500 |
Content-Type: | text/plain |
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All,
I have a lead trim operation that uses a Q-corporation LOM II
trimming system with a vacuum fixture. We are using the standard
cutting rings with a 30 degree angle. The Vacuum fixture being used
is quite snug and there is very little vacuum loss in the process.
The issue I have is the height requirement we're trying to meet is
.020" max length. This strict requirement is resulting in pcbs being
cut into and damaged, some flagging, and some solder fractures. This
seems to be a very operator dependent operation and costly if not done
correctly. I have tried varying the speed the cutter is moved across
the board, having Q-corp sharpen the blades instead of us doing it and
using a QB-1 PCB brusher which was purchased for this product.
Is there anyone out there with a similar trim height requirement
and what types of things do you perform to insure a repeatable
process? Also anyone with suggestions please let me, I need to get
this resolved if at all possible.
Thanks
Chris Smith
Manufacturing Engineer
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