Search found 733 matches

by Chaz
Sun Jul 06, 2025 6:29 am
Forum: Centroid Acorn CNC Controller
Topic: Servo is cheeping very loud...
Replies: 8
Views: 487

Re: Servo is cheeping very loud...

Its normal. My Panasonics do the same. Reducing the rigidity setting (P in PID) might reduce the sound however then there is less holding torque.
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by Chaz
Fri Jul 04, 2025 4:32 pm
Forum: Centroid Acorn CNC Controller
Topic: Retrofitting Thor
Replies: 5
Views: 266

Re: Retrofitting Thor

Bit stuck. I cant get the A5 Minas Panasonics working. Its odd, they just hum and move slowly and dont respond. Must be a setting somewhere. The single A4 one is working well.

Ive got some other drives which I know will work but then I need to make new mounting hardware. Not keen on that ...
This post has been liked 1 time(s).
by Chaz
Tue Jul 08, 2025 5:53 am
Forum: Centroid Acorn CNC Controller
Topic: lathe turret conversion help please
Replies: 7
Views: 337

Re: lathe turret conversion help please

Ive got an Emco 320 which (there is a thread about it here) I burnt out the AC motor for the turret. Ive since put on a Servo motor and I have done the same where I basically reverse engineer the steps it needs to take for each tool position.

My tool change logic is almost identical to yours and ...
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by Chaz
Sun Jul 06, 2025 2:21 pm
Forum: Centroid Acorn CNC Controller
Topic: lathe turret conversion help please
Replies: 7
Views: 337

Re: lathe turret conversion help please

You will need to do some custom ATC M6 code. If the sensors are PNP then you either need to get Eth1616 card or find a way to convert them to NPN as Acorn cannot read PNP.
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by Chaz
Fri Jul 04, 2025 9:43 am
Forum: Centroid Acorn CNC Controller
Topic: Retrofitting Thor
Replies: 5
Views: 266

Re: Retrofitting Thor

I've managed to get the Y Axis working by removing the 2.2K resistors and that's fine.

The X and Z are Minas 5 drives, Y is Minas 4, they have slight differences. Both X and Z are only vibrating, moving very slowly, wont respond to a command. Ive programmed them Identically and both are doing it so ...
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by Chaz
Fri Jul 04, 2025 7:11 am
Forum: Centroid Acorn CNC Controller
Topic: Retrofitting Thor
Replies: 5
Views: 266

Re: Retrofitting Thor


Crikey, a CNC 3 axis oil rig anchor, looking forward to seeing this up and running with Acorn! 15m/min with that amount of weight/momentum, frightening! I thought the nearly 1 tonne table on my Bridgeport was a hefty lump to be hauling around on rubber 8M belts :o


Yep, the Spindle and ...
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by Chaz
Thu Jul 03, 2025 9:39 am
Forum: Centroid Acorn CNC Controller
Topic: Retrofitting Thor
Replies: 5
Views: 266

Re: Retrofitting Thor

And some pics from when it was still nicely painted and finished.
IMG-0016.jpg
IMG-0024.jpg
IMG-0022.jpg
IMG-0026.jpg
IMG-0025.jpg
IMG-0028.jpg
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by Chaz
Thu Jul 03, 2025 9:32 am
Forum: Centroid Acorn CNC Controller
Topic: Retrofitting Thor
Replies: 5
Views: 266

Retrofitting Thor

So, what the heck is Thor ...

Let me introduce you to my 2.x ton concrete mill I build some years ago in my double garage.

This is the full build thread, its a fairly long read - https://www.mycncuk.com/threads/9616-Thor-or-should-that-be-Zeus?highlight=thor

Fundamentally, its a 3 axis milling ...
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by Chaz
Tue Jul 01, 2025 3:07 am
Forum: Public Beta CNC Software Testing, Discussion and Feedback
Topic: Machine Position Correction Planar Compensation available to try out.
Replies: 26
Views: 39340

Re: BETA Volumetric Compensation available to try out.

For some reason I read this thread last night. Do I understand the feature correctly ....?

I can take a machine which isnt 'perfect' and effectively tune each axis to make small live adjustments to ensure that each axis is as perfect as possible?

This is very interesting if so. I have a 2 ton DIY ...
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by Chaz
Mon Jun 30, 2025 3:02 pm
Forum: Centroid Acorn CNC Controller
Topic: New Build - 'Audit' CNC - Lathe Attachment
Replies: 4
Views: 180

Re: New Build - 'Audit' CNC - Lathe Attachment


You may have seen these before - but for the rest of us:

Interesting article on HSM site: https://bbs.homeshopmachinist.net/forum/general/35426-audit-cnc-lathe-attachment

And one for sale up in Scotland. https://www.hibid.co.uk/Audit-CNC-Lathe-attachment/


Thanks. I actually bought these from ...
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