🚀 go-pugleaf

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I guess 20 gauge is about .032.  that's in
between welding wire sizes.  The common smooth
drive rolls pull the wire by deforming it to a
square or triangular shape.  They do make u
groove rolls that might work but they come in
.030 and .035.  maybe someone knows of a non
welding source for .032 drive. If you can settle
for the deformation then the .030 rolls may
work. I guess the amount of deformation depends
on how much pressure you need to put on the wire
to feed it consistently.  Maybe the wire will
return to its original shape.

Doug Danielson wrote:
> 
> I need to find or build a device to unwind and wind a 500 ft reel of 20
> guage bare wire. It needs guide rollers to create a straight length of wire
> 6 to 12 in. long where we will use a flame spray nozzle to apply a coating
> to the wire. The general layout would look like a reel to reel tape
> recorder, with the flame replacing the magnetic heads.
> 
> The wire needs to move at a constant speed past the flame, at rates ranging
> from 1 to 60 in/min. The wire needs to remain under tension to keep it
> straight between the guide rollers. The drive mechanism cannot gaul or mark
> the wires surface, since this would disrupt the coating.
> 
> I hope to find the whole device off the shelf, but if that is not possible,
> I would prefer to by some sub assemblies such as the guide rollers so that I
> minimise the portion I must create from scratch. If I have to build it
> myself, I need some advice on the motion controller to drive it. I would
> prefer one that can monitor an encoder that measures the shaft speed of one
> of the guide pullys, and adjust the spindle speed to keep a constant wire
> speed and tension as the wire pays off the reel. Can someone recommend a
> motion controller that can do this? I would prefer to use a stand alone
> controller and send it a 4-20 ma signal to set the wire feed rate, but I am
> using Labview and could use a Valuemotion board in the PC to drive the
> motors.
> 
> Thanks in advance for any tips,
> 
> Doug Danielson
> Atlanta, GA
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