Recommendation for step rate on the motor driver with direct drive 1:1 of the Z-axis
Recommendation for step rate on the motor driver with ratio 2:1 of the Z-axis
Keep in mind that conventional lathes on the Z axis rarely achieve a higher accuracy than 0.02-
0.05mm. This is due to the long lead screw, which cannot achieve higher accuracy due to ther-
mal expansion and inaccuracies. It is therefore unnecessary to set the resolution to a few mi-
crometers.
MAXIMUM FEED SPEED
The maximum feed rate in mm/revolution is directly linked to the ratio of encoder pulses, mo-
tor steps/revolution and the thread pitch of the lead screw. The maximum feed rate is decisive
for the maximum thread pitch you can produce. Please note, however, that threads with a pitch
of more than 8 mm are very rarely turned.
17
Screwpitch [mm] Transmission
Steps/Rev
on motor
Resolution per step
[mm]
1 1:1 400 0,0025
2 1:1 400 0,005
3 1:1 400 0,0075
4 1:1 400 0,010
4 1:1 800 0,005
5 1:1 800 0,00625
6 1:1 800 0,0075
8 1:1 800 0,010
Screwpitch [mm] Transmission
Steps/Rev
on motor
Resolution per step
[mm]
1 2:1 200 0,0025
2 2:1 200 0,005
3 2:1 200 0,0075
4 2:1 200 0,010
4 2:1 400 0,005
5 2:1 400 0,00625
6 2:1 400 0,0075
8 2:1 400 0,010
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