oops, I should have read the responses before I posted (you'd think I would
have learned that by now, eh?).
For some reason I misread your question and assumed you were looking for the
original CAD database (board layout). Next time I will drink my coffee FIRST,
then visit TechNet! Now that I re-read your post, you are referring to CAD data
as what I would call manufacturing data
We usually make two different data packages:
1) FAB - Gerbers, Drill, Netlist, Drawing, etc.
2) ASSY - BOM, Placement Data, Test Points, etc
Now I'm wondering if someone sent you the wrong set, or an incomplete set.
You definitely need that "pick-and-place" data for assembly. I wouldn't try to
generate component locations from Gerber data!
onward thru the fog,
Jack
.
On Thu, 11 Nov 2010 08:19:17 -0600, Jack Olson <[log in to unmask]>
wrote:
>Oh, I didn't write that. I've had that "History" for probably 20 years now, don't
>know who wrote it. In fact, the only place I've ever seen it published was in
>Volt Magazine, and I'd bet very few of you have ever heard of THAT one.
>Hey, is anyone else a member of the ICDA? (International Circuit Designer's
>Association)? now I'm getting nostalgic...
>
>as for your questions:
>1) the only CAD file we have ever been asked for is an ASCII database so the
>fabricator could extract IPC-D-356 netlist info (Mentor couldn't export that
file
>format until recently)
>2) The manufacturing data should contain everything necessary to fabricate
>the board accurately, I don't know any reason to supply more, unless by "CAD
>data " you mean something like ODB++ format
>3) I don't think so. That would be quite a service. Let me know if there is
>anyone who can "reverse engineer" a database from Gerbers. They could
make
>quite a good living doing that, I would imagine
>4) none that I know of.
>
>If you have a specific problem you are trying to solve, you might check with
>Router Solutions or someone similar (CAMCAD?) who has a lot of experience
>with translators.
>
>good luck,
>Jack
>
>
>.
>On Wed, 10 Nov 2010 11:11:34 -0500, Amol Kane
><[log in to unmask]> wrote:
>
>>Dear Technetters,
>>Hopefully this e-mail with get people going on technet again.
>>
>>Some brief background before I ask questions. We use Aegis to write our
>process instructions and machine programs and it is infinitely easy working
with
>CAD files (not to be confused with Autocad drawings) as compared to
digitizing
>Gerber files. CAD files have to contain the Part Number, Package Information,
>Component Reference ID and location coordinates, along with the board
>outline. Gerbers are used for ordering wave pallets, stencils etc. So,
>>
>>
>>1. How many people specifically ask customers to provide CAD files
along
>with Gerber.
>>
>>2. What is involved in generation of CAD files (any special software,
extra
>steps etc)
>>
>>3. Are any of the board houses capable of providing CAD files if the
>customer only gives gerber files
>>
>>4. What software can one use to generate CAD files if I have Gerber
>>
>>Jack,
>>How come there was no mention of Tesla in your electricity piece? Very
>hilarious by the way!
>>
>>
>>Thanks!
>>Amol
>>
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