Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 96

9.1.3 9.1.3 Thread Thread
9.1.3 9.1.3 Thread Thread Cutting
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Cylindrical Cylindrical Cylindrical Cylindrical Thread Thread Thread Thread Cutting
Programming Programming Programming Programming
G82 X(U)_ Z(W)_ R_ E_ C_ P_ F(J)_
Explanation Explanation of of of of the Explanation the the
Explanation the parameters
X, Z Coordinate values of end point (point C) in absolute command
U, W Coordinate values of end point (point C) with reference to the initial point (point A)
in incremental command
R, E Coordinate value of retraction amount with reference to the end point (point C) in
incremental command.
C The number of thread head. It is single thread when C is 0 or 1.
P Start point offset. It is used for multiple threads.
F Thread lead per revolution
J Thread lead in inch measurement
+X
F F F F unction unction
unction unction
This command can implement the cylindrical thread cutting. The machining path is
A→B→C→D→A. Moreover, this command is same as G32 (Thread cutting with constant
lead).
Cutting Cutting Cycle Cycle
Cutting Cycle Cycle (G82)
Cutting Cycle Cutting Cutting Cycle Cycle Cycle
parameters parameters
parameters
z
D
3R
e
r
x/2
Figure 9.9 Cylindrical Thread Cutting Cycle (G82)
9. Functions to Simplify Programming
(G82) (G82)
(G82)
w
4R
2F
C
L
92
A
u/2
1R
B
+Z