Thread: To big steppers?
I wouldn't use 2Nm because while they spin faster there will be very little torque left at the Mid/higher end of speed curve which is were you want it while cutting.
8nm would mean Nema 34 which would actually run slower with the same amount of volts. So you'd need more voltage which means larger drives and PSU. Really Large steppers need high power drives that run at mains voltage for best performance.
Last edited by JAZZCNC; 25-09-2016 at 02:33 PM.
The cutting force was set at 100N in these calculations.
I cant run higher speeds on a ball screw of the length I am using.
Steppers with higher torque had a torque curve that plummeted as soon as they start rotating, the 2 and 3 nm motors were comparatively flat.
The Following User Says Thank You to JAZZCNC For This Useful Post:
I thought I'd post a video of the machine during it's acceleration tests today.
Now I'm unsure of what Jazz means but here is the machine running at 0,4 G with two 2 Nm steppers and 1610 ballscrews:
Topspeed is 10200 m/min
Last edited by Sven; 05-02-2017 at 01:21 PM.
Ah, I thought it might be in that direction.
I'll test and let you know!
Whoops, well spotted!
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