Re: [CAD_CAM_EDM_DRO] Servos

Frank, if you don't mind sharing with us, what does your servo system
consist of? I too would like to build a servo system for the same reasons,
and any information would be very helpful in getting me started.....

RC

----- Original Message -----
From: dakota8833 <dakota8833@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, June 14, 2002 7:44 AM
Subject: [CAD_CAM_EDM_DRO] Servos


> After playing around with a stepper system for months and trying to
> resolve lost or gained step problems I gave up.
> What I found with open loop steppers is that on some nc files I would
> see this. Now I'm running servos and never looked back.
> Other members have listed pros and cons of either method. This is why
> I would go servo ,... For one, no worry of lost position
> from part to part. I ran 12 rudder cores at 2 hrs a piece. I'm going
> to redesign my mill making it more robust. Belt driving 4 to 1
> using my current 1 inch lead screw to get the torque I need. In doing
> this I will be able to mill denser material and take larger cuts
> at speed. Typically servos run at a much higher rpm and you don't
> loose the torque one is trying to gain by "gear reduction". And
> with a servo ( encoders ) I can change to a lower resolution and
> maintain my current 2048 cpr. at .0005. CPU load stays the
> same and I don't push my control software either. I think steppers are
> fine for small mills where speed is not important but for
> large router tables servos are the way to go .
>
> Frank
>
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