Re: [CAD_CAM_EDM_DRO] 60oz. stepper motors!

jepps5 wrote:

> Would 60oz. stepper motors be enough to mill stainless steel? I know
> that everybody has big motors here but I dont have that much money
> to spend. I was wondering if I could just use slow feed rates to cut
> stainless steel with these stepper motors.

What size machine do you have? With a 5 TPI Acme screw, I would have
doubts that this motor could move A Series-I Bridgeport without any cutting
faster than 10 IPM or so. If you have a Sherline, I doubt you can mill stainless
anyway. The problem is that stepper motors lose their torque rapidly as speed
increases. If you have 60 In-Oz of holding torque, you might have only 20 In-Oz
of driving torque at 300 RPM.

Jon