G72 End face thread cutting compound
fixed cycle
[Command format]
G72 X_ Z_ A_ B_ D_ W_ H_ L_ E_ F_ J_
M_ Q_
K
X: Coordinates of ending point for
thread cutting end face
Z: Final cut depth for thread cutting
A: Taper angle
I: Difference between start and end
points for taper thread cutting (Instruct A or I only for taper thread.)
B: Cut angle (The range is 0<=B<180. If not instructed, it is regarded as 0, the
same as the cutter angle of ordinary
tool.)
D: Cut depth at the 1st cycle
W: Finishing margin (If not instructed, it is regarded as W=0,
without finishing cycle.)
H: Thread major height
L: Thread overcutting distance at the
last thread cutting cycle (Effective when M23 is instructed. When L is not instructed with M23 effective,
however, L is used as one pitch at the start of thread cutting.)
E: Pitch change distance per pitch for
variable pitch thread
F: Thread pitch instruction (When J is instructed, F/J pitch is used.)
J: Number of threads within the
distance instructed by F (If not instructed, J=1.)
M: This M code instructs the cut mode
and cut pattern for the thread cutting.
M32: Single blade cut mode
M33: Zig-zag cut mode
M34: Reverse single blade cut mode
M73: Cut pattern 1
M74: Cut pattern 2
M75: Cut pattern 3, cut pattern 4
Q: Instruct the number of multi-thread
for multi-thread machining.
