Originally Posted by
bmlw
Hello all, hope someone can shed some light on this.
I am making a small flange nut that has a 32 TPI internal thread. All appears normal except that the thread seems to change pitch as it nears the bottom of the nut. I have looked at the G76 notes in the FANUC Operators manual and can find nothing wrong with my code:
N4 ( IT230400 SET POINT AT Z0)
G00T1102
G97S3500M3
G0X.45Z.2
G76X.503Z-.2K.019D100E.03125
X.503
G0Z1.0
T1100
M1
I looked at my Operators Manual (Apendixes) and found
PARAMETER 6212 Chamfering amount in thread cutting cycle Range 0 - 127, it was set at 0
PARAMETER 6213 Chamfering angle in thread cutting cycle Range 0-60, it was set at 45. I tried reseting this to 60 and then to 0 and had no luck.
Any ideas would be appreciated
BMLW