Warning from Vericut regarding Arc start and end points.

[[email protected]]

Hi all, this warning I received from Vericut, it reminds me of an alarm I had seen from the Haas controller before. something that said "radius too large" in the alarm perhaps and when looking at the line that causes the warning the radius is a lot bigger than any of the other i or j values around it... Any insights? when my machine finishes running I am going to see if it causes any alarms in graphics.

 

Warning for line 439574
X1.9426 Y-4.339 I-13.3641 J-.0059
 Warning: Arc start and end points may produce undesirable motion on Fanuc controls at line: 439574

 

G03 X1.8508 Y-4.1938 I.0132 J-.0401 F600.
G01 X1.7975 Y-4.4663
X1.7903 Y-4.503 Z1.7947 F15.
X1.7968 Y-4.5348 Z1.7712
G03 X1.8952 Y-4.5329 I.0484 J.0382
X1.9425 Y-4.3521 I-.2073 J.151
X1.9426 Y-4.339 I-13.3641 J-.0059  (line:439574)
X1.9386 Y-4.2169 I-.4958 J.045
G01 X1.9338 Y-4.2045 Z1.7806
X1.9016 Y-4.1838 Z1.8087
X1.8842 Y-4.1857 Z1.8212

[gcode]

If your machine runs this OK, it means the endpoint tolerances in your Vericut machine are set too tight

[crazy^millman]

This is a CYA because of what the machine may or may not do when running that line of code. If ever in doubt linearize that section.

[[email protected]]

2 minutes ago, gcode said:

If your machine runs this OK, it means the endpoint tolerances in your Vericut machine are set too tight

So if it runs through my graphics without error, it should be safe to assume it will run okay I take it.

What's sort of odd about this is that I am making a symmetrical part and this threw no alarms or warnings on the front half of the part but it does on the back side when all I did was copy and paste and reselect surfaces. perhaps i should see if translate mirror works on this path. its a dynamic optirest btw.

[gcode]

X1.9425 Y-4.3521 I-.2073 J.151
X1.9426 Y-4.339 I-13.3641 J-.0059  (line:439574)

There is X.0001 and Y.013 distance between these 2 endpoints and you are swinging a 13.364 radius arc

This move is so close to a straight line that the difference us immeasurable.

You might want to look at the break are settings on the Arc page of your control definition

 

 

[[email protected]]

this is my arc filter settings for this path also

[#Rekd™]

In your Control Definition what is the "Min arc radius"? It is default 0.0005, this can cause problems on FANUC controls.

[[email protected]]

I don't think have access to my control definition where I work now. I will try to see and I will let you guys know if the HAAS graphics hangs up on this as well....Do you think there is any chance simply regenerating could end up with a different result? i am guessing it would do the exact same thing unless i change something but i don't know what i should change

[#Rekd™]

If you have access to the Mastercam file you will have access to the local Control Definition on that file.

[[email protected]]

in the control definition it says .005

[#Rekd™]

What is the Arc - Mill set to for Arc Breaks?

 

[[email protected]]

15 minutes ago, #Rekd™ said:

What is the Arc - Mill set to for Arc Breaks?

 

allow 360 degree arcs is checked and arc break options set to dont break arcs

[crazy^millman]

33 minutes ago, [email protected] said:

allow 360 degree arcs is checked and arc break options set to dont break arcs

Try 180 or Quadrants instead. More code, but might help this issue.

[[email protected]]

Thanks I will try the solutions you have presented me with. I had just realized I needed an updated .stl for the back side optirest path as well which might get rid of the issue I am having. I do agree ajmer .01 tolerance is probably too big as well.

[ajmer]

i think that your total tolerance is too big 

not sure if that is what is causing these issues but try changing it to 0.002" or even 0.001"

and run it thru vericut adn see if the same errors happen

 

[#Rekd™]

Another option is to bump the Min Radius up to 0.01" in the Control Definition for this file and see if that solves it. Also set the Min Arc length to 0.005".