A model of the mill or pictures would be good.
Just go with Stepperonline NEMA 34, 1200 oz/in and the DM80i drivers. Note the shaft sizes on the steppers, not all follow the NEMA 34 1/2'' shaft spec, this will save you from having to change couplers when you install the DMM servos, and everything will just bolt in.Here is the mindset - I want to get set up nicely with steppers as cheaply as possible, and then upgrade to DMM servo's on each axis when possible (Any advice as to motor size in this regard would be appreciated as well). But I'd like them to be decent as I plan to repurpose them on a lathe build after they are swapped out.
I don't need super fast rapids, as it's a smallish work envelope. I more value accuracy and torque.
I have been researching Drivers, and have steered away from the Gecko G201x (7A 80V, $110), towards either the Leadshine AM882 (8.2A 80VDC - $66 Ebay) or the Stepperonline DM80i (7.2A 80V - $43.73). The stepperonline is very tempting because of its specs, price, and it's apparently made by Leadshine. Anyone have any input on these?
As far as steppers go, I want to keep in mind that I'm upgrading to DMM's later, and buy steppers that will make sense on the same ballscrew that will be used later with DMM's.
I'm not sure why you would want to gear down the 1.8KW DMM servo, they have enough torque to twist your machine into a pretzel when direct coupled. I'm using a 1.8KW DMM servo, direct coupled, on the X and Z axis on my lathe. It has about 12 inches of Z carriage travel and it will hit >400IPM in a 4 inch rapid move. Oh, and the carriage assembly weighs over 2000 lbs. The DMM 750W NEMA 34 servos and the DYN4 drives would be more than large enough for your mill, on all axes. If I were going to replace the servos on my 10x52 (12.5x39 work envelope) mill, that's what I would use.It will be used for machining aluminum and steel, with either a 750W DYN 4 (with 1.25:1 or 1.5:1 reduction), or a 1.8kw (2;1 ish reduction) DYN 4. Should i go with a Nema 34 right out of the gate on the Z axis?, and will a Nema 23 option be large enough for XY?
See aboveFinally, and most importantly,,, does anyone have specific recommendations or links towards the most ideal steppers for my application? I am of the impression I want as little inductance, and for it to be as high of voltage/amp draw possible right?
Thank you in advance.