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Mounting hole Centering

nathstevenson

I have imported a dxf file in to my board design on OrCAD PCB Designer 16.6, the DXF outline has circles for the mounting holes however I believe I need to add a copper pad to the centre of the hole in order for the output drill file to be correct

 I have a copper pad that I can place by selecting to place manually and selecting it from the mechanical component menu, what I am wondering is whether there is an easy way to place the copper pad exactly in the centre of the dxf mounting hole as currently I am placing it and then trying to measure from the centre of the copper pad to the edge of the DXF mounting hole

 Thanks in advance for helping 

  • eephillip

    Here is a manual way that I do it.

    If it wasn't filled during the import you should have arc segments otherwise you will have a shape.

    If you do a "show element" on your dxf geometry a window will pop up showing you a link for "center-xy"  ie (-2100, 0.52)

    Click that coordinate and your view will snap to that coordinates. I then do a ctrl-c (copy). Now I have that exact coordinate in my clipboard.

    Then do a move command on your pad with the option "Sym origin" or "body center" enabled.

    While the pad is attached to your cursor. Go into the command line window (Enable by going to View -> windows -> command)

     Type x and the ctrl-v (paste) the coordinate you copied and hit enter. Should be somthing like this "x -2100 0.52", pad should now be exactly placed.( no commas in the coordiante by the way)

     

  • nathstevenson
    That's great, it might be manually but it's better than my current attempts
  • eephillip

    Great, and if you map those actions to funckeys 

    funckey m move

    funckey e show element

    You can really get going pretty fast.

    What I should do is write a little skill function that will just copy the center coordinates directly to the clipboard without having to do the show element.

     

  • steve

     Why don't you simply use the RMB - Snap Pick to - Arc/Circle Center. The imported DXF creates a circle which can be snapped onto. You can assign shortcut keys for the Snap Pick to Options if you wish

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