travel per revolution?

Started by mristau on Oct 30, 2015 in TinyG Support. 3 replies, last activity Nov 2, 2015.

mristau Oct 30, 2015 #

Changing my z axis to a Tr8*8-4.

My previous TinyG z axis setup was:
[4sa] m4 step angle 1.800 deg
[4tr] m4 travel per revolution 2.5400 mm
[4mi] m4 microsteps 8 [1,2,4,8]

What should my new 4tr be??

cmcgrath5035Staff Oct 30, 2015 #

I believe the pitch on 8MM rod is 1.25mm.

Most folks use
$4tr=1.25
and
$4mi=4

Custom Creations Nov 2, 2015 #

Mine is 2mm..

Tr8*8-4
Lead Screw Diameter ∅ 8 (mm)
Pitch 2 (mm)
Lead 8 (mm)

cmcgrath5035Staff Nov 2, 2015 #

Thanks, good to know different ones out there.
When Pitch is provided, $_tr = Pitch

One has to do math when TPI provided

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