Re: CNC Router belt drive

Thanks guys, makes a lot more sense.

Cheers
Wayne

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
>
> wgaybba wrote:
>
> >Hi
> >
> >Thanks, I now understand the belt drive. But I don't think I fully
> >understand the stepper motor and servo thing. If the machine is
busy
> >cutting something on x-axis and y is standing still. Does the
> >electric drivers apply electricity to the y motor to prevent it
from
> >moving?
> >
> Absolutely! Any force that deflects the encoder off of the
commanded
> position
> will cause the drive to bring the motor up to max torque, if
needed, to
> STAY on that position. It may allow a deflection of one or two
encoder
> counts, but shouldn't exceed that by much.
>
> > Otherwise the force of the head cutting could make y move. Is
> >this what they call holding torque or stall torque in the motors
> >datasheets?
> >
> >
> Continuous stall torque is how much torque the motor can deliver
all day
> without overheating. And, yes, the drive can apply that much torque
> safely for as long as needed, to stay on position.
>
> Jon
>