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2 G Code
NJ/NY-series G code Instructions Reference Manual (O031)
G
74 L
eft
-ha
nded
T
a
ppin
g
C
ycle
2
Pr
ogramming Example
If the spindle axis is assigned to the coordinate system, the number of rotations of spindle axis from the
R point level to the Z point is as follows.
 When the CNC coordinate system does not have the spindle axis
In this case, the Z-axis and spindle axis positions can be synchronized by using the sequence control
program.
When the spindle axis is not assigned to the coordinate system and to determine the number of rota-
tions of spindle axis, consult the instruction manual provided by the machine tool manufacturer.
Refer to the programming example of G84 Tapping Cycle on page 2-63.
G74 Xx Yy Zz Rr Pp Kk
//if G91 and G98 are activated
//Execute below code k times
G00 Xx Yy //Initial level
G00 Zr
//R point level
M19
M04
G01 Zz
//Z point
G04 Pp //dwell
M03
G01 Z-z
//R point level
M04
G01 Z-r
//Initial level
//if G91 and G99 are activated
//Execute below code k times
G00 Xx Yy //Initial level (first time) -> R point level (from the second)
(G00 Zr
//R point level (first time only))
M19
M04
G01 Zz
//Z point
G04 Pp //dwell
M03
G01 Z-z
//R point level
M04
Programming Example
F
S
Spindle speed = Z-axis movement amount ×
G98 G99
X
Z
X
Z
Initial level
R point level
Z point
Initial level
R point level
Z point