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Show"N"Tell ( Your Machines) / Re: Warco VMc /Chester 626 knee mill CNC conversion
« on: July 23, 2008, 04:21:14 PM »
Micro stepping makes for smoother motion, Mariss says 10 micro steps is the ideal and I believe him, he knows his steppers
You seem to be working arse for tit LOL, what you want to do is work from your hardware and that will give you your steps per unit, from that you can work out what kernel speed you would need for a given speed (although if SS its not an issue)
Ok so stepper at 200 steps per rev, you get Geckos with 10 micro steps so that 2000 steps per rev, 3:1 gearing = 6000 steps per rev of the ballscrew. Ballscrew move 3 mm/rev so thats you back to 2000steps but its per unit now (1 unit = 1mm in your case). With a 2000step per unit I would think you could get 1250mm/min out of a stepper, I get 2500mm/min with 1000 steps per unit ((200 x 10 x 2.5) / 5) = 1000 steps per unit. Smaller motors can often rotate faster so if you are using smaller steppers you may well get a faster speed.
Hood
You seem to be working arse for tit LOL, what you want to do is work from your hardware and that will give you your steps per unit, from that you can work out what kernel speed you would need for a given speed (although if SS its not an issue)
Ok so stepper at 200 steps per rev, you get Geckos with 10 micro steps so that 2000 steps per rev, 3:1 gearing = 6000 steps per rev of the ballscrew. Ballscrew move 3 mm/rev so thats you back to 2000steps but its per unit now (1 unit = 1mm in your case). With a 2000step per unit I would think you could get 1250mm/min out of a stepper, I get 2500mm/min with 1000 steps per unit ((200 x 10 x 2.5) / 5) = 1000 steps per unit. Smaller motors can often rotate faster so if you are using smaller steppers you may well get a faster speed.
Hood