Stepper Size Recommendation

[64dodge]

I finally have my machine about finished. Started @ 15 years ago (life got in the way).
It's all steel. I had enough sitting around to do it and I can weld and machine it. Travel is 24"X 12"Y 6"Z plus an extra 1/2-1" for good measure.
X uprights and X cross brace underneath for ball screw block are 11 gauge broke to 1x6 & 1x4 channel with some ladder bracing & pads welded in.
X upright to linear bearing is 1/4x4 bar with machined pads bolted to bearing blocks.
The Y cross tube is 2x3x1/8 with 2x1/4 angle welded on top and bottom machined flat and straight edged for supported rail.
I know my big mistake was opening up back of tubing for ball screw & nut travel but it was to keep chips off screw.
Z main block is same 2x3x1/8 tubing with 2x1/4 angle milled like Y.

Other details

Rails
X 25mm home made supported 38" long
Y 16mm supported 21" long
Z 16mm supported 14" long

Bearing Block Spacing
X 13" outside-outside 17" center-center rail
Y 8" outside-outside @ 6" center-center rail
Z 7 1/2" outside-outside @ 6" center-center rail

Ball screws all 1610

Weight with out spindle
X 80lbs+
Y 40lbs
Z 10lbs

Spindle will be china 2.5kw vfd water cooled for quicker up and going. I drew up a cat20 atc spindle but that will be on down the road.

I know its light weight materials for steel but its what I came up with way back when before I knew about the Zone.
Back to stepper size question, with this info can you make a recommendation.
Plane is to do 3d wood & plastic at 100+ ipm. Would like 200+ ipm rapids. That would only be 508rpm witch should be easy from everything I have read here.
Going to use air cyl & tank for Z counter balance. X weight is my main concern with changing direction rapidly doing 3d.
I was thinking @ 400oz nema 23 with ebay dm556 and 48v power supply. I have several of old pc that have decent lattence with LinuxCNC.












I will get some more up to date photos soon

Thanks for any advise
Tim

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[louieatienza]

I think you'll be fine with those motors and drive...

[64dodge]

Thanks
I knew there is a lot of guys on here with plenty of experience to say ya or nay.
Would like to feed and rapid faster, but was wanting to be realistic.

[64dodge]

In the 2nd photo to the left and behind the bridgeport is a cast alu 40x20 8" thick tslot table.
It will be a moving table gantry, moving on the 20" y direction with long heavy x.

[64dodge]

Well I got X&Y to moving today. Had it running 200 ipm rapid the full length of travel so I think I may have done something right for a change.
The X ballscrew seemed straight when I checked it but seeing it spun it has a cork screw spiral bend. I pushed & pulled hard on gantry while
it was moving and couldnt tell any difference in motor stalling. Maybe soon I will get Z put together and moving. Then get a spindle and make
some chips.