Nema34 - DM860A Driver & Mach3

[Channel]

Hi all!

today I counted the teeth of the pulleys of the Z axis and both result from 20 teeth.

So I applied the formula suggested by cropwell using the value of drivers 8.

(20/20) * 1.5 = 1.5 >> 200 / 1.5 = 133.333 >>> 133.33X 8 = 1066.66

So I set this value in the Z axis.

By moving the axis, however, I noticed that it still moved in an inaccurate way.

So I used the "Auto-tuning" tool from mach3 which calibrated the steps to 533.33 (exactly half)

I have tested some movements such as

- G1 Z10 F400
- G1 Z0 F400
- G1 Z-30 F400
- G0 Z0 F400

And all the movements were performed correctly. (and to be honest, I' am REALLY HAPPY)

The only thing I would like to know because I have this difference between the steps that the machine has calculated and those instead obtained by formula.

I'm pretty sure the driver is at 8 and not at 4 (setting that would justify 533.33 as a step value) but tomorrow I will recheck. XD

As for the X & Y axes, maybe this is the formula?

(engine step * (driven pulley / driving pulley) * driver value) / 50mm

The 50mm value I obtained by making a complete turn to the 60-tooth pulley and measuring the displacement of the trolley.

So the calculation would remain ...
(200 (60/15) x8) / 50 >> (200x4x8) / 50 >>> 6400/50 = 128.

Is this value the one I have to set in the motor tuning section for the X & Y axes?

Thanks all again for your precious help