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

Century star turning cnc system
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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

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