Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 93

9.1.2 9.1.2 End End Face Face
9.1.2 9.1.2 End End Face Face Turning
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Face Face Face Face Cutting Cutting Cutting Cycle Cutting
Programming Programming Programming Programming
G81 X(U)_ Z(W)_ F_
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
F Feedrate
+X
Function Function Function Function
This command can implement the end face cutting. The machining path is
A→B→C→D→A.
Turning Turning Cycle Cycle
Turning Cycle Cycle (G81)
Cycle Cycle Cycle
parameters parameters
parameters
B
2F
C
z
Rapid traverse speed
Feedrate
Figure 9.6 Face Cutting Cycle (G81)
9. Functions to Simplify Programming
(G81) (G81)
(G81)
w
A
1R
4R
3F
D
A: Initial point
B: Starting point of cutting
C: End point of cutting
D: Retraction point
89
u/2
x/2
+Z