Hi ya Steve,
If all else fails send them out to an independent machine shop for routing.
Might save some money compared to buying a saw especially if your
customer/supplier is getting away from sending panelized boards.
Hans
~~~~~~~~~~~~~~~~~~~
Hans M. Hinners
Materials Engineer (Process & Manufacturing)
Warner Robins Air Logistics Center
Avionics Production Division
Precision Attack/ Radar/Manufacturing Branch
Engineering Section
380 Second Street, Suite 104
Building: 640, Mail Stop: LYPME
Robins AFB, GA 31098-1638
Voice: (478) 926 - 1970 Fax: (478) 926 - 7164
mailto:[log in to unmask]
http://www.robins.af.mil
-----Original Message-----
From: Stephen R. Gregory [mailto:[log in to unmask]]
Sent: Monday, August 28, 2000 9:55 PM
To: [log in to unmask]
Subject: [TN] Depanelizing boards within a "RCH"...
Hi all!
I got another "opportunity"...we may be getting some boards in here that are
in a 2-up panel, that are polyimide, that have to be depanelized. "So whutz
yer problem Steve?"
Problem is that there are traces that run .015" from the edge of the
board...nifty huh?
The boards are scored within that dimension, but it was learned that
snapping
them out isn't a solution, or is using a machine called a "Maestro" (I can't
remember the company that makes them), or one from "Radoll Designs", that
follow along the score lines to separate the boards. They say that they've
tried these tools and that this results in innerlayer separations because of
the brittle-ness of the polyimide material...I can understand that.
So they say it needs to be cut with a diamond saw, again, I understand
that...polyimide laminate is some tough stuff to cut. So I went on a search
for diamond saws...got a bunch of hits that have saws to cut ceramic tile,
and lapidary tools to cut jewelry stones and such, but nothing that I've
found that convinces me that I'll be able to set this board up in and be
able
to be repeatable within .015"...it seems now I'll have to try and eyeball
everything with something like a rip fence. The systems that I've seen also
all have oil or water cooling systems for the blades that will douch the
boards with liquid from the saws that I don't think is a good idea to do...
I know, I know...this is asking a lot...such is my life...but is there
anything out there that any of you know of that can do this? For less than
$5K?
Customer says that they'll be getting away from panelized designs sometime
soon, but not soon enough to not have to build panelized boards for a
while...guess this stuff is why I have a job...
If I figure out how to do this, I'll let ya'll know...if I'm still
sane...and
can type on my keyboard...
-Steve Gregory-
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