Part gouged by swarf toolpath

[Bob W.]

I am running a 5-axis swarf toolpath on some pretty simple geometry and I am getting a gouge when it rounds a corner. This is showing up in Vericut but it does NOT show up in backplot. The toolpath tolerances are very tight and it has a finishing pass which is where the gouge occurrs. Here is the code. The lines where the gouge happens are pretty obvious.

 

X-6.79524 Y.04724 Z2.15284 C-306.333 B-21.35 F325460.03
X-6.79497 Y.04741 Z2.15362 C-306.334 B-21.356 F433986.72
X-6.79489 Y.04534 Z2.1539 C-306.352 B-21.359 F999999.
X-6.79496 Y.0283 Z2.15398 C-306.489 F368430.86
Y.02404 Z2.154 C-306.523 F500.
Y-.00578 Z2.15414 C-306.762 B-21.36 F999999.
X-6.79482 Y-.02065 Z2.15447 C-306.882 B-21.363 F419227.22
X-6.79446 Y-.02047 Z2.15551 C-306.884 B-21.372 F325612.44
X-6.79411 Y-.02024 Z2.15655 C-306.886 B-21.381 F325457.29
X-6.79375 Y-.01998 Z2.15759 C-306.887 B-21.39 F325334.81

 

The lines where the gouge happens are pretty obvious. Any ideas why this might be happening? The tool is rounding a gentle corner with a nice fan going on. No crazy geometry here, nice and smooth.

[Greg Williams]

Is there a gap in the curves or a surface overlap here?

[Bob W.]

Is there a gap in the curves or a surface overlap here?

 

No, loosening the tolerances got rid of the gouge. Not sure what the issue is but I'd like to find a resolution. It might be post related but that is just a guess.

[CJep]

In the tool axis control for the swarf toolpath did you try using minimize corners?

 

Where you using chains or surfaces to drive the swarf toolpath?

 

By tolerances are you referring to the wall following method?

[Bob W.]

This was the swarf toolpath from the toolbox section of the selection window. I had the max angle increment to .01 degrees and the max step to .01". There were no sharp corners and the tool was driven by a surface and a bottom chain.

[Aaron Eberhard]

Bob - Can you provide a file, so we can see the problem?

[Bob W.]

It appeared to be related to the angle step. I was going to send the file but after changing the settings back it would not replicate. For now I backed the angle step back to .5 and set the system, chordal, and toolpath tolerances to .00001 in my config file.