Cutter Radius Compensation ( G40 , G41 , G42 )

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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby Vmax549 » Wed Sep 21, 2016 1:41 am

To add to that today there are a lot of difference methods of TRC so what would you call THE standard ???

Also today there are a LOT more options for CAM then there was 5-10 years ago so TRC is not as important today as it was then. Today there is a larger portion of CNC users that have no idea what G42/43 does OR how to use it in Gcode. They are dependent on CAM to create teh proper code.

AND that is not a bad thing just a different way of doing the same old thing.

TRC is also not easy for teh CAM side to do well.ASK Les over at Sheetcam (;-) There are a LOT of things to consider.

(;-) TP
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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby Robertspark » Sat Jul 15, 2017 2:34 pm

Any further thoughts on implementing this?

I've been working with some wizards at cutting common shapes for plasma, and as I delve more into wizards for hole cutting, i've been looking at kerf compensation and also plasma bevel compensation relative to plate thickness hence am interested in this for "simple" g01, g02 and g03 motion in one plane

As apposed to "complex" compensation allowing for tool wear

At the moment I'm allowing for offset factors, but was wondering if there was any development plans with uccnc for it as it will make mycrude compensation obsolete.
Rob

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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby A_Camera » Sat Jul 15, 2017 6:17 pm

I think the lack of cutter radius compensation in UCCNC is a pretty big issue, at least for me. I really don't care about the advanced type and don't care about tool wear, but a simple one taking the tool radius into account would be very nice and useful. This is actually my biggest issue with UCCNC and in the long term it is serious.
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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby ger21 » Sat Jul 15, 2017 6:18 pm

+1
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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby cncdrive » Wed Jul 19, 2017 12:51 pm

Yes, at one point we will add this feature. It is partly already coded, but we will need to work on it a bit more to finish.
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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby Battwell » Thu Aug 03, 2017 9:18 am

I can send some code that fails by gouging every time in mach3
Something I cut a lot of.
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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby Battwell » Tue Dec 19, 2017 10:18 am

just emailed you a test dxf balaczs - as i cant upload a .dxf file here
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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby cncdrive » Tue Dec 19, 2017 2:40 pm

Hi Brendon.
I got the dxf file and generated a toolpath from it and set the G42 to tool dia=1 and got the results on the attached printscreen.
I'm not sure where the issue was in mach3 or if the result on the picture is what you expect to happen? Please check the picture...
Attachments
G42D1.png
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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby A_Camera » Wed Dec 20, 2017 8:48 am

cncdrive wrote:Hi Brendon.
I got the dxf file and generated a toolpath from it and set the G42 to tool dia=1 and got the results on the attached printscreen.
I'm not sure where the issue was in mach3 or if the result on the picture is what you expect to happen? Please check the picture...

Hi Balázs,

Does this mean we can expect a Christmas present from you...? ;)

I'd love to be able to start using G40/G41/G42 again.
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Re: Cutter Radius Compensation ( G40 , G41 , G42 )

Postby Battwell » Wed Dec 20, 2017 11:35 pm

Set tool diameter to 12 not 1
The issue is if the tool radius is larger than a segment- it should roll around but in Mach 3 it gouges where pointed to
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