Pete,
Your about to have some fun! With a full size mill like yours, I would definately be looking at Servos! Steppers will work, but the size you need you can get better deals, not to mention better preformance out of the servos. Motor size, equal or greater to your power feed is a good starting point, there is no going over-board for a full size machine. As for the Drivers, there are plenty of good choices out there. Gecko is very highly though of, but I have yet to use their servo drivers. You would definately be better off using encoders on the motors. The will give a more acurate reading of what the motor is actually doing, and respond back to the controller better. Most servos will come with the encoder in place anyway.
Good Luck. Hope this helped.
Regards,
Glen |