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Pick-n-Place files

bulldog

Hi,

Has anybody written a program to generate pick-n-place files that outputs fiducial (mechanical symbol) locations along with the component locations?  Our vendors want separate files for top/bottom side components and surface mount/thru-hole components.  Add that along with extracting fiducial locations and this is a bit more then the standard report extraction can handle.

  • Hi,

    I can make a suggestion based on my past experiance with the assembly house I dealt with.

    They did not require component fiducials only card fiducials. I would but 3 fiducials in the corners of the card top and bottom whenever possible at the same x,y coordinates. I would then dimension these on the fab drawing. Usually with a leader line and list the x,y coordinate. This was acceptable to my assembly house.

    You could create this fids as a component and add them to the schematic then they would come out in the standard output.

    Another possibilty is to use say the film mask layer in the padstack and create a fid artwork with only the fid's on that layer. The x,y's would be in the artwork.

    Just some suggestions.

    BillZ

    EMA Design Automation 

     

  • Have a look at the forum entry:-

    /forums/p/11197/13431.aspx#13431 You can custom write a report that will include your co-ordinates.

  • Hi,

    You could also program your own skill routine and search through all mechanical symbols by name and make sure only the ones having a special name are outputted.

    Best regards,

    Ole

  • Thanks Ole,  I used the pickdata.il program you wrote some time back as a "pattern" for what I need.  I am much more familiar with Visual Basic and once I caught on to Skill it was just a matter of writing and testing.

    Thanks again everybody.

  •  I've written a few of these translators for different organizations. I've found that although Allegro supports and defines mechanical symbols well in it's output that most downstream manufacturing tools I've interfaced with do not in their input translators ... mechanical information within the file either gets stripped or causes corruption. I did approach several of the downstream tool vendors suggesting they have a look at the current Allegro data definition for their input translators, but there was not much interest in supporting change. I've therefore decided to add the fiducials and tooling holes as package symbols within the schematic - the information flows fine thru the 3rd party input translators.

    Hth,
    Dave

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