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Linearization of circular interpolation in G code

Genius
Genius

When I verify face groove in turning and round lower corner

 

1.png

simulation shows circular interpolation on the corner,but when I generate G code circular interpolation is linearized

 

N65 G1 Z-15.147
N70 X6.367 Z-15.228
N75 X6.35 Z-15.3
N80 X6.633 Z-15.159

 

on the upper corner (same operation) everything is fine.Corner is rounded same way with circular interpolation and the code is correct.

 

NX9.

2 REPLIES

Re: Linearization of circular interpolation in G code

Esteemed Contributor
Esteemed Contributor

First thing I would check is make sure the internal toolpath has an arc at that location.  No arc in internal toolpath, no arc output.

 

Second thing I would check is the arc radius and length - get the radius and length of the move.

Then go into the post -> Program & tool path -> circular motion

check the min arc length & min arc radius - see if the actual arc length/radius is less than the mins - if so, decrease the mins (I typically set to .001" or .0001")

Ken Akerboom Sr CAx Systems Engr, Moog, Inc.
Production: NX10.0.3.5 MP5 + patch/TC11.2
I'd rather be e-steemed than e-diseaseled


Re: Linearization of circular interpolation in G code

Genius
Genius

Thank you Ken, I reduced min arc length in PB,and it works fine now.Smiley Happy

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