feed rate 0 in surfacing

[deckerc]

we are getting F0's in a rough parellel and finish parellel path on G3 lines in the xz plane. The tool has all feed rates filled in, feed, plunge and retract. if i turn the filter off the program is good, but too long. Any ideas why this would be happening?

[Roger Martin from CNC Software]

Check the 'Adjust feed on arc move' setting.

It is in the Feed Calculation groupbox on the

Tool Settings page of the Machine Group Properties.

[deckerc]

feed calculation is set "from tool". The really strange thing is, i can't get this post a f0 again. Earlier i had two different computers posting it, now I can't get either on to. Must be a Friday case of not thinking clearly.

 

Thanks for the response Roger.

[Ocean Lacky™]

I get F0. occaisionally, myself. happens in all surface toolpaths, seems totally random. I've just gotten into the habit of searching all my programs for F0.

[deckerc]

Ok,

the feedrate 0 happens when "one way" filering is checked in the total tolerance. I don't know why it was checked. Actually i don't even know what it does for sure but i know we normally don't have it checked.

[Saultspics]

Yes! toolpath filter one way can cause a F0 on arc moves. I had this on a finish parallel that drove me nuts.

[Mike Mattera - TFM]

You want to use one way filtering. It has to do with how the points are linked together, within the tolerance you specify. It's just like if you dimensioned a print from the left and also from the right.

 

"One Way" calculates all the filtered points from one side, within the tolerance you specify. No tolerance mismatch from left to right. I think it's especially important in Parallel cuts.

 

Mike Mattera

[JG]

I usually get a F.0 on flowline tool paths and/or when using tang line entry under gap settings, In V9's post I added if feed = 0, !feed, however in X I had to modify it to if feed <= .001, !feed

 

Jg

[Qmp]

Hi JG,

 

Where do you add " if feed <= .001, !feed " in the post ?

 

I got complaint from operator fewtime, too

 

Thanks

 

Paul

[Qmp]

Hi JG,

 

Where do you add " if feed <= .001, !feed " in the post ?

 

I got complaint from operator fewtime, too

 

Thanks

 

Paul

[Qmp]

Sorry

 

I hit 2 times

 

Paul

[JG]

Qmp,

 

first off keep in mind that I am a hack 'n slash with posts, second backup your original, third use at your own risk.

 

I added the statewments to the "plinout" and "pcirout" before the code that is already there (no ", e"

 

thanks,

 

Jg