FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

PROGRAMMING
B–62754EN/01
14. FUNCTIONS TO SIMPLIFY
PROGRAMMING
191
G68 : Double turret mirror image on
G69 : Mirror image cancel
Mirror image can be applied to X–axis with G code.
When G68 is designated, the coordinate system is shifted to the mating
turret side, and the X–axis sign is reversed from the programmed
command to perform symmetrical cutting. To use this function, set the
distance between the two turrets to a parameter (No. 1290).
X
60
120
180
120φ
(2)
(1)
(3)
120
Z
80φ
40φ
X40.0 Z180.0 T0101 ; Position turret A at (1)
G68 ; Shift the coordinate system by the distance A to B
(120mm), and turn mirror image on.
X80.0 Z120.0 T0202 ; Position turret B at
(2)
G69 ; Shift the coordinate system by the distance B to A,
and turn mirror image cancel.
X120.0 Z60.0 T0101 ; Position turret A at (3)
Offset value of
tool post A
Offset value of
tool post B
Tool post A
Tool post B
14.6
MIRROR IMAGE FOR
DOUBLE TURRET
(G68, G69)
Format
Explanations
Examples
D Double turret
programming

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