Centroid Community CNC Support Forum

Quick update:
https://www.youtube.com/watch?v=U6kji0tNzYo

I am going to use a leadshine PLC to handle my ethercat atc. And just interface with the centroid PLC using IO logic.
Additionally the pcb design for the centroid hickory breakout is done and it has been ordered and produced. Should be ...

New update!
I've been busy with other house projects, so the CNC retrofit has been on hold quite a bit. Yesterday, I managed to get a few more hours in and made some solid progress.

Oiling system upgrade
I switched out the oiling system for a volumetric distribution setup. The OEM system just ...

So I spent a little more time on it this weekand and the arm section fully works.
I had to turn the speed down about to 20000mm/m for the toolchange arm motor (arbitary unit) When i go higher than that the mechanical "klunks" sound a bit too violent :P.
https://www.youtube.com/watch?v=q11-JRBxoOI ...

I could be wrong, but In the new(er) fusion , the orientation of the axis is all done by the machine definition and not hard coded in the post processor. Uwe/I posted an updated community one here somewhere which has been converted to the "new" standard.

In the past the kinematics were hard coded ...

Preload is the big thing here. You want repeatability in this sense, not accuracy. he accuracy you can solve with scales etc.

suntravel wrote: ↑Tue Mar 11, 2025 10:07 am Actually the Pyramid is with a hydrostatic screw drive...

https://cdn.prod.website-files.com/60db ... nallow.pdf

Uwe

The micro does not

The guy worked at Kern :D . When it comes to the screw itself, it's either C7 or C5. Still, they're high-quality screws. The C rating mainly refers to the non-linearity error, which can be mapped and calibrated for accuracy. Of course, you still need proper preload in your screw.

In lithography ...

Somebody once told me that kern just runs c7 ballscrews and fixes the issues with comp/scales.

A Nuc also has a bunch of power saving modes. Have a look in the bios

I had to edit the code a bit more and now it works. Next step is to add the servo on the arm. And the atc functionality is almost completed.