Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 99

9.1.4 9.1.4 End End Face Face
9.1.4 9.1.4 End End Face Face Peck
Programming Programming Programming Programming
G74 Z(W)_ R(e) Q(△K) F_
Explanation Explanation of of of of the Explanation the the
Explanation the parameters
Z Coordinate value on Z axis of the end point in absolute command
W Coordinate value on Z axis of the end point with reference to the starting point in
incremental command
R Retraction amount(e) for each feed. It must be absolute value.
Q Depth of drilling(△K) for each feed. It must be absolute value.
F Feedrate
Function
Function Function Function
This command can drill a hole on end face.
Peck Peck Drilling Drilling
Peck Drilling Drilling Cycle
parameters parameters
parameters
W
△K
Figure 9.12 End Face Peck Drilling Cycle (G74)
9. Functions to Simplify Programming
Cycle Cycle (G74) (G74)
Cycle (G74) (G74)
e
X
95
Z