Advice please

[m_c]

With the same 100 step/mm setting, try a move of 16mm and see how far the motor itself turns.

[D-man]

With the same 100 step/mm setting, try a move of 16mm and see how far the motor itself turns.

I'm getting multiple turns from 16mm! Lol it still hasn't stopped yet


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[D-man]

With the same 100 step/mm setting, try a move of 16mm and see how far the motor itself turns.

Ok I'm getting 1 revolution on the small pinion attached to motor. @ 16mm movement with 100spr


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[m_c]

Ok I'm getting 1 revolution on the small pinion attached to motor. @ 16mm movement with 100spr

So that tells us the microsteps are correct, as with those settings and distance, the controller is sending 1600 steps.

Are you sure the 18:90 gearing is correct for the pulleys?
And everything is moving smoothly and not stalling?

[D-man]

So that tells us the microsteps are correct, as with those settings and distance, the controller is sending 1600 steps.

Are you sure the 18:90 gearing is correct for the pulleys?
And everything is moving smoothly and not stalling?

Yeah everything runs lovely, i will count them again to make sure 2 mins

[D-man]

So that tells us the microsteps are correct, as with those settings and distance, the controller is sending 1600 steps.

Are you sure the 18:90 gearing is correct for the pulleys?
And everything is moving smoothly and not stalling?

Yep, defiantly 18 teeth on motor side and 90 teeth on large pulley to pinion


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[m_c]

Yep, defiantly 18 teeth on motor side and 90 teeth on large pulley to pinion

In that case it is definitely a 5:1 ratio, so with the 100 step setting, the big pulley should turn once with a move of 80mm (16x5).

Once that's confirmed, work out the tooth pitch. Measure over as many teeth as you can, then divide your measurement by the number of teeth you've measured over, then multiply by the number of teeth on the pinion (23).
Then that will give the distance one revolution of the pinion should give.

Then divide 8000 (number of steps for one revolution), by that distance, which should give you the correct steps per mm.

[Greeny]

Deleted as no longer relevant

[D-man]

Thanks for all your help guys, ive managed to dia it in. Completely my fault i think. managed to get it within 1mm and fine tuned it with mach3 settings

[D-man]

Guys whats the best way to find out the pitch of the Z screw?