Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 89

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Taper Taper Taper Taper Cutting Cutting Cutting Cutting Cycle
Programming Programming Programming Programming
G80 X(U)_ Z(W)_ I_ 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
I The radius difference between starting point B and end point C. It is negative, if
the radius of point B is less than the radius of point C. Otherwise, it is positive.
F Feedrate
+X
x/2
Function Function
Function Function
This command can implement the taper cutting. The machining path is A→B→C→D→A.
Cycle Cycle Cycle
parameters parameters
parameters
z
D
3R
C
Rapid traverse speed
Feedrate
Figure 9.2 Taper Cutting Cycle (G80)
9. Functions to Simplify Programming
w
4R
2F
A: Initial point
B: Starting point of cutting
C: End point of cutting
D: Retraction point
85
A
1R u/2
i
B
+Z