Cutter Compensation

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pbaudio
Posts: 25
Joined: Wed Dec 05, 2018 5:08 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: UK

Cutter Compensation

Post by pbaudio »

Hi,

Could somebody please explain why Acorn fails to follow the programmed path correctly when cutter compensation is applied on this profile.

I have attached a screen shot showing the error, and the code being used.


Phil
Attachments
Capture2.PNG
Test_T3.nc
(1.52 KiB) Downloaded 46 times
Phil - UK - Acorn CNC12 Pro
pbaudio
Posts: 25
Joined: Wed Dec 05, 2018 5:08 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: UK

Re: Cutter Compensation

Post by pbaudio »

Acorn cuts a gouge out of the part when it reaches the circle on the screenshot.
Phil - UK - Acorn CNC12 Pro
cncsnw
Posts: 3703
Joined: Wed Mar 24, 2010 5:48 pm

Re: Cutter Compensation

Post by cncsnw »

Try increasing Machine Parameter 99.

Use F8/Graph to preview the path. There is no need to run it every time.
pbaudio
Posts: 25
Joined: Wed Dec 05, 2018 5:08 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: UK

Re: Cutter Compensation

Post by pbaudio »

I have had a look at the machine parameter 6 but it says its to enable an automatic tool changer. I does not seem to make a difference if i set it to 1.
Attachments
pram6.PNG
Phil - UK - Acorn CNC12 Pro
pbaudio
Posts: 25
Joined: Wed Dec 05, 2018 5:08 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: UK

Re: Cutter Compensation

Post by pbaudio »

Also just to add a bit more information I am running the latest version of Acorn and this has been an on going issue with all the versions I have used. Everything else works great.
Phil - UK - Acorn CNC12 Pro
cncsnw
Posts: 3703
Joined: Wed Mar 24, 2010 5:48 pm

Re: Cutter Compensation

Post by cncsnw »

Sorry about that: Machine Parameter 99 (corrected above as well).
pbaudio
Posts: 25
Joined: Wed Dec 05, 2018 5:08 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: UK

Re: Cutter Compensation

Post by pbaudio »

cncsnw wrote: Mon Mar 21, 2022 7:19 pm Sorry about that: Machine Parameter 99 (corrected above as well).
Thanks for the pointers, I have just tried that and it still does not fix the problem,

I am convinced that its a problem with the software and Centroid should look in to fixing it. This does not happen on any other machine as far as I know.
Phil - UK - Acorn CNC12 Pro
cncsnw
Posts: 3703
Joined: Wed Mar 24, 2010 5:48 pm

Re: Cutter Compensation

Post by cncsnw »

You should post a Report from your control, taken immediately after you have confirmed the problem is still present.

This type of thing often relates to small roundoff errors, and so will vary depending on the exact location of your part zero and the exact value of your tool diameter offset.

Without a report from your control, there is little that someone at Centroid can do except try your CNC program and tell you that it works fine on their system.
Attachments
Test_T3.png
rk9268vc
Posts: 267
Joined: Fri Nov 13, 2020 4:12 pm
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Re: Cutter Compensation

Post by rk9268vc »

Here is a thread explaining how i got it to work

https://centroidcncforum.com/viewtopic.php?f=60&t=6827

I used wear compensation
pbaudio
Posts: 25
Joined: Wed Dec 05, 2018 5:08 pm
Acorn CNC Controller: Yes
Allin1DC CNC Controller: No
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC11: No
CPU10 or CPU7: No
Location: UK

Re: Cutter Compensation

Post by pbaudio »

rk9268vc wrote: Wed Mar 23, 2022 4:00 pm Here is a thread explaining how i got it to work

https://centroidcncforum.com/viewtopic.php?f=60&t=6827

I used wear compensation
Thank you I think this is the way I will have to go.
Phil - UK - Acorn CNC12 Pro
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