Re: [CAD_CAM_EDM_DRO] Re: CNC Router belt drive

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