Re: How fast is your homemade CNC?
Quote:
Originally Posted by
dazp1976
Not fast enough! 80ipm reliable rapid moves which was a little disappointing. Got some resonance which isn't helping things.
Only have 3000rpm max spindle so limited to around 20-24ipm cutting with a 8mm 3 flute anyway (esp slotting).
If it makes any money it'll be spindle and servo upgrades first.
This is where I'm glad I went overboard for Nema34's on my PM25 clone.
At 400rpm (2000mm/min) the torque figure is almost identical to the Nema23 motor from a similar model line.
When it comes to acceleration though it's a fairly big difference so far.
Haven't got round to do that much testing yet with tuning to find it's stall point.
Re: How fast is your homemade CNC?
My home shop CNC can cut composites pretty damn fast, its almost scary. I could have a nap between each passes when it cuts ferrous-anything though...
All depends!
Should have asked what sort of 'rapids' (aka non-cutting moves) are you getting from your homemade cnc instead ;)
Re: How fast is your homemade CNC?
New build for plasma cut:
X/Y at 88 m/min (brushless)
Z at 25 m/min (brushless)
X 12500mm
Y 2800mm
Z 270mm
Re: How fast is your homemade CNC?
Re: How fast is your homemade CNC?
I converted a colchester clausing mastiff, I had to slow it down, 600 ipm rapids on the x axis is too fast. I limit it to 100 ipm usually to give me half a chance to hit the estop. most of the time that's still too fast for me. I make large parts (3" to 10") and rapids don't save much cycle time.
Re: How fast is your homemade CNC?
Quote:
Originally Posted by
dazp1976
This is where I'm glad I went overboard for Nema34's on my PM25 clone.
At 400rpm (2000mm/min) the torque figure is almost identical to the Nema23 motor from a similar model line.
When it comes to acceleration though it's a fairly big difference so far.
Haven't got round to do that much testing yet with tuning to find it's stall point.
A little update.
Dumped the X,Y nema34 1080oz motors.
Swapped for nema23 566oz. Kept it as a 60Vdc system.
Rapids up to 2500mm/min (98ipm), very smooth and it could easily do more.
Acceleration went up to a setting of 3000 without issue. Seems limitless atm.
Still not the fastest cutter with it's 3000rpm spindle limit. Should be much better when the servo goes on.
Re: How fast is your homemade CNC?
Faster than 600 IPM (254 mm/s)
Re: How fast is your homemade CNC?
I have a belt driven X hub that can cut at 800IPM yet it's really futile at that speed on the grounds that my Y hub max cutting rate is 90IPM. Except if I cut a lot of even notches I never see anyplace close to 800. I leave it set ~120IPM.
Re: How fast is your homemade CNC?
Just measured mine, hitting 6000mm/min X & Y 3000mm/min Z
Not crazy fast, but only has a 200x200 work area.
Oh, and cuts steel like butter.
Re: How fast is your homemade CNC?
Quote:
Originally Posted by
i_am_fubar
Just measured mine, hitting 6000mm/min X & Y 3000mm/min Z
Not crazy fast, but only has a 200x200 work area.
Oh, and cuts steel like butter.
Got the same speeds on my 200x200 machine. Unfortunately, the only thing it can cut like butter is, well, butter.