Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 88

9.1 Canned
9.1 9.1 9.1 Canned Canned Cycles Canned
To simplify programming, the canned cycle command can execute the specific operation
using one G code, instead of several separated G commands in the program.
9.1.1 Internal
9.1.1 9.1.1 9.1.1 Internal Internal Diameter/Outer Internal
� � � �
Straight Straight Cutting Cutting
Straight Straight Cutting Cutting Cycle
Programming Programming
Programming Programming
G80 X(U)_ Z(W)_ F_
Explanation Explanation of of of of the the
Explanation Explanation the 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
z
x/2
Function Function
Function Function
This command
A→B→C→D→A.
Cycles
Cycles Cycles
Diameter/Outer
Diameter/Outer Diameter Diameter/Outer
Cycle Cycle
Cycle
parameters
parameters parameters
D
3R
C
Rapid traverse speed
Feedrate
Figure 9.1 Straight cutting cycle (G80)
can implement the straight cutting. The machining path is
9. Functions to Simplify Programming
Diameter Cutting
Diameter Diameter Cutting Cutting Cycle Cutting
w
4R
2F
A: Initial point
B: Starting point of cutting
C: End point of cutting
D: Retraction point
84
Cycle (G80)
Cycle (G80) Cycle (G80) (G80)
A
1R
u/2
B
+Z