Re: help procuring NEMA 23 stepper motor mount; first of many newbie questions

What are the details about the coils that you are going to wind? Size? Wire gage? Inductors? Transformers? Type of core? Type of bobbin?

I have worked a lot with that type of equipment some years ago.
Bertho Boman
Vinland Corporation
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> From: multi-volti@...
>
> Hello:
>
> I'm new here courtesy of Hans W's recommendation.
>
> I want to interface a nema 23 stepper motor I have with a Kerk screw rail
> (I haven't bought it yet).
>
> I don't what kind of precision to expect a local machinist to be capable
> of (what if the guy makes levers for dumpsters?). I'm not a machinist,
> so I don't want to overspecify precision that may be unnecessary, or cost
> me more fingers than I can afford.
>
> Upon discovering this list, I suspected you folks know exactly what will suffice.
>
> I also wonder if I could pay a freelancer to make 1 or 2
> (money or barter), when I'm ready.
>
> I have two needs:
>
> I am building a transformer/coil winder. One motor will drive a
> spindle (?) or mandrel (?) that coil bobbins are mounted on.
> Due to necessary torque (need 15 pounds of wire tension worst case), I'm
> considering using a high torque electric screwdriver (90-120 inch-pounds),
> and on the 'dead' end of the driven shaft I want to mount a NEMA 23 stepper
> I have which has an integral 200 slot disk and encoder. The stepper would simple 'freewheel', or possibly be used as an electronic brake.
>
> The second need is where the linear screwrail (combination leadscrew and
> linear slide in one mechanism) comes in. This one will be driven by
> a stepper to precisely control the wire traverse direction and pitch.
> I have both Sanyo Denki unipolar steppers and Vexta 2-phase steppers with encoders on the back. I have alot of the Sanyo Denki's and a few of
> the Vexta's.
>
> This application should not need much torque. A precision pulley mounts on
> the screw rail for the under-tension wire to pass over and be moved back and forth across the bobbin.
>
> It is for a hobby application, so if I can find a 'street' method of doing this, my wallet will be much happier.
>
> Thanks for your help.
>
> Murray
> multi-volti@...
> http://users.softhouse.com/uptown/multi-volti/