Re: Need advice on upgrading 2 existing CNCs

Give us more info on your machines. Ball screws, acme, all thread,
TPI, table or gantry, load, gearing, etc.. I have some extra servo
motors and drives that may work if you provide some more information.

~petev

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "braidmeister"
<braidmeister@y...> wrote:

> At the moment I am running Vexta 2-phase motors putting out about
> 305in/lbs ea. I believe that they are either NEMA 32 or 34 size. I
> have one machine that is a CNC router and the other is a CNC plasma
> cutter. I am currently controlling them through a proprietary
> control box which also runs proprietary software (I won't mention
> who's just yet)
>
> Currently I am only able to reliably run 150-180 IPM before I start
> losing steps. I would like to run the machine at 400-600 IPM and

jog

> around 800-1200 IPM. I can upgrade one of the machines for a cost

of

> about $7000 that will get me within these specs through the CNC
> manufacturer...Is it possible to get this performance at a lower
> cost???
>
> My 1st thought is to look into servos, but I have concerns with
> there being interference with the Hypertherm plasma cutter machine.
> I am also at a loss how to properly select a servo that will be
> closest in mounting, torque and target speed. The other option is a
> hybrid type stepper like Oriental's AlphaStep or Animatic's
> SmartMotor with feedback like a servo.
>
> Can someone tell me if a servo will reliably run on a plasma

machine?

>
> What would you suggest, a hybrid stepper with feedback or servo for
> both machines?
>
> What kind of ballpark $ am I looking at to upgrade the hardware on
> one machine? (Steppers~Servos/power supply/Geckos etc)
>
> Where would you recommend that I purchase my motors to get the best
> deal?
>
> Any and all help is greatly appreciated!
> Thanks!
> -B