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Re: Smoothing - Do you use it?
Posted: Tue Aug 31, 2021 3:20 pm
by eng199
ashesman wrote: ↑Fri Aug 27, 2021 6:24 am
But how much does it impact the final dimensions?
The results show on the plot if the proper parameter is set.
P229 Backplot/Smoothing mode
0 = Faster Backplot, smoothing may be active but is not shown
1 = Slower Backplot, smoothing effects shown.
Re: Smoothing - Do you use it?
Posted: Tue Aug 31, 2021 8:22 pm
by polaraligned
eng199 wrote: ↑Tue Aug 31, 2021 3:20 pm
ashesman wrote: ↑Fri Aug 27, 2021 6:24 am
But how much does it impact the final dimensions?
The results show on the plot if the proper parameter is set.
P229 Backplot/Smoothing mode
0 = Faster Backplot, smoothing may be active but is not shown
1 = Slower Backplot, smoothing effects shown.
The plot is not going to show how the final dimensions are impacted. It is just a visual that will show the toolpath. What happens if you have a part that has tight dimensional tolerances. How do you know that they will be met even if the machine is capable of holding those tolerances?
Re: Smoothing - Do you use it?
Posted: Tue Aug 31, 2021 8:25 pm
by ashesman
polaraligned wrote: ↑Tue Aug 31, 2021 8:22 pm
eng199 wrote: ↑Tue Aug 31, 2021 3:20 pm
ashesman wrote: ↑Fri Aug 27, 2021 6:24 am
But how much does it impact the final dimensions?
The results show on the plot if the proper parameter is set.
P229 Backplot/Smoothing mode
0 = Faster Backplot, smoothing may be active but is not shown
1 = Slower Backplot, smoothing effects shown.
The plot is not going to show how the final dimensions are impacted. It is just a visual that will show the toolpath. What happens if you have a part that has tight dimensional tolerances. How do you know that they will be met even if the machine is capable of holding those tolerances?
My thoughts are that you should never have to run smoothing unless you actually want its effects. Maybe for a contoured surface where the g code is a bit coarse and dimensions are not critical. But you sure as heck should not have to use it to stop the control stuttering around corners right?
Re: Smoothing - Do you use it?
Posted: Wed Sep 01, 2021 7:38 am
by polaraligned
Well, even "precision mill" mode uses smoothing. Look at the smoothing menu in CNC12 and you will see the settings for corner sharpening, etc. Only "exact stop" mode does not use any form of smoothing.
Again back to your question, how does smoothing effect accuracy of final part? The CNC12 manual has a section detailing it near the back. I have not read thru it as I am happy with my results using "precision mill" setting. Maybe a better answer can be found in the manual.
Re: Smoothing - Do you use it?
Posted: Wed Sep 01, 2021 9:21 am
by eng199
polaraligned wrote: ↑Tue Aug 31, 2021 8:22 pm
eng199 wrote: ↑Tue Aug 31, 2021 3:20 pm
ashesman wrote: ↑Fri Aug 27, 2021 6:24 am
But how much does it impact the final dimensions?
The results show on the plot if the proper parameter is set.
P229 Backplot/Smoothing mode
0 = Faster Backplot, smoothing may be active but is not shown
1 = Slower Backplot, smoothing effects shown.
The plot is not going to show how the final dimensions are impacted. It is just a visual that will show the toolpath. What happens if you have a part that has tight dimensional tolerances. How do you know that they will be met even if the machine is capable of holding those tolerances?
You can view the commanded toolpath and are saying the mechanicals are good. The only other issue is a drive and motor combination that can not follow the commanded toolpath. The motor and drive following error is likely to be reduced with the "easier to follow" smoothed profile. Of course the control can not check your final dimensions, this has to be done by manually measuring the part.