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