Re: [CAD_CAM_EDM_DRO] EMC Real world

Ethan Vos wrote:

> Well, 600 inches per minute is what I'm looking for.

This is not unreasonable, but it will be hard to do this with stepper motors.

> The machine with the Compumotor drives will go to 300.

This is pretty impressive, too.

> The Compumotor is set up to 5,000 steps per revolution, which equals 25,000
> per inch.
>
> The maximum speed on the linear slides/ball screws that I have is 10 inches
> per second. If my math is correct, that's 50 revolutions/sec or 3,000 rpm.

Yes, I didn't realize you were microstepping, although you provided enough
info to deduce that.

> I think the Compumotor is micro-stepping the motors. The motors are rated
> at 200 steps/rev. but the drive is setup for 5,000.
>
> They're PacSci motors.
>
> I must be missing something somewhere. Why would the drives be set at 5,000
> steps/rev and the motors be rated at 200? 25 micro-steps per step?

Yes, probably. Most stepper motors used for precise positioning are either
200 or 400 full steps/rev. there is no such thing as a 5000 step/rev motor.

Jon