Re: [CAD_CAM_EDM_DRO] Cnc PCB drilling machines z axis linear pot

Hi Jon,

We have the CNC for the positioning, what if we used EDM to weld the
wires down? OK, I know it's for cutting, but it IS like a little
welder!

I have a Gardener-Denver wire wrap gun, with a nice little stripper
mounted on it. Not automatic, tho.

Using some old plotter steppers to position a "cursor" above the proper
pin to wrap would be helpful! The Gcode program could make the moves,
or a "modified" controller program could even tell us the length of wire
we needed!

Alan KM6VV


Jon Elson wrote:

>
> Alan Marconett KM6VV wrote:
>
> > Hi Bill,
> >
> > OK, I just had a flashback! We do CNC, I wonder what it would take to
> > do CNC wire-wrap? I've done wire-wrap for a long time. It could be
> > coordinate-assisted, or full automatic. I've always liked the
> > "Manhattan" approach. If the pin locations were mapped with their X,Y
> > coordinates, and the wrap level Z as three fixed levels... This could
> > be interesting!
>
> Gardener-Denver made semi-auto and full-auto wire wrapping machines.
> The tricky part is loading the wire end into the wrapping bit. I have seen
> some full-auto boards, and the hallmark is that the ends of each wire
> are wrapped in opposite directions. I think this is a clue that the machine
> feeds wire off a roll, and winds up a twist in the wire at one end, and then
> undoes the twist at the other end. It has to automatically strip the ends
> of the wire, and cut to length, too. I have also seen a special bit that
> strips the wire as it wraps it.
>
> There is also CNC stitch-bond (ultrasonic thermal welding) of wire similar
> to wire wrap, and it can also use something like magnet wire.
>
> There is also multiwire technology, where magnet wire is laid down by CNC
> tools into soft epoxy. One outfit then has the board CNC drilled and
> plated like a through hole plated board. Another scheme stitch bonds the
> wires to pads on the board.
>
> It would be pretty neat to have capability like that.
>
> Jon