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Re: Retrofit Acorn to full blown Acorn Six
Posted: Wed Feb 05, 2025 12:31 pm
by suntravel
Getting close to the finish line, only a few more parts to make and my mill is 5 axis, switchable from AC to BC configuration and all axes full closed loop
Kind of tricky to do all parts on my small machines, the workenvelope is used up to 0.5mm to the limit...
Uwe
Re: Retrofit Acorn to full blown Acorn Six
Posted: Fri Feb 07, 2025 7:39 am
by suntravel
This thing is ready to make some chips now.
For some reason the 80:1 harmonic drive is 81:1
Uwe
Re: Retrofit Acorn to full blown Acorn Six
Posted: Fri Feb 07, 2025 9:00 am
by Black Forest
That looks great. What will be your first project to build with this new whatever you call it?
Re: Retrofit Acorn to full blown Acorn Six
Posted: Fri Feb 07, 2025 9:47 am
by suntravel
Black Forest wrote: ↑Fri Feb 07, 2025 9:00 am
That looks great. What will be your first project to build with this new whatever you call it?
Thank you.
I have no clue, because I do not really need a 5 axis part right now
I build it because its new and I getting bored fast doing things I have already made
I need this to test the upcoming RTCP functions for more configurations in CNC12.
Uwe
Re: Retrofit Acorn to full blown Acorn Six
Posted: Fri Feb 07, 2025 10:03 am
by Chaz
Ive got a 5 Axis mill using UCCNC. How do you deal with A Axis homing? Are you using ZRI homing?
Re: Retrofit Acorn to full blown Acorn Six
Posted: Fri Feb 07, 2025 10:05 am
by Chaz
suntravel wrote: ↑Fri Feb 07, 2025 9:47 am
Black Forest wrote: ↑Fri Feb 07, 2025 9:00 am
That looks great. What will be your first project to build with this new whatever you call it?
Thank you.
I have no clue, because I do not really need a 5 axis part right now
I build it because its new and I getting bored fast doing things I have already made
I need this to test the upcoming RTCP functions for more configurations in CNC12.
Uwe
There's going to be RTCP?
Re: Retrofit Acorn to full blown Acorn Six
Posted: Fri Feb 07, 2025 10:22 am
by suntravel
It is already here, but only for A B with tilting head, ob B tilting table.
Centroids A560 machines using it.
Uwe
Re: Retrofit Acorn to full blown Acorn Six
Posted: Fri Feb 07, 2025 10:37 am
by Chaz
suntravel wrote: ↑Fri Feb 07, 2025 10:22 am
It is already here, but only for A B with tilting head, ob B tilting table.
Centroids A560 machines using it.
Uwe
Oh. I didnt go for Centroid due to no RTCP (at the time). In fairness the UCCNC solution was a lot cheaper, so not too unhappy with it but would prefer something known to me. My setup is an AC setup.
Re: Retrofit Acorn to full blown Acorn Six
Posted: Fri Feb 07, 2025 4:51 pm
by suntravel
I figured out that the gear ratio is depending on the driving arrangement:
https://harmonicdrive.de/fileadmin/Down ... 053522.pdf
Page 314/315
Uwe
Re: Retrofit Acorn to full blown Acorn Six
Posted: Sun Feb 09, 2025 10:53 am
by Black Forest

You have had enough time to figure out a part to make with 5 axis! Get to it. We want a video.
