
13. FUNCTIONS TO SIMPLIFY
PROGRAMMING B–63522EN/02
NC FUNCTION
174
Mirror image can be commanded on each axis by programming. Ordinary
mirror image (commanded by remote switch or setting) comes after the
programmable mirror image is applied.
D Setting of programmable mirror image
G51.1 X_ Y_ Z_ ;
is commanded and mirror image is commanded to each axis (as if
mirror was set on the axis).
D Programmable mirror image cancel
G50.1 X_ Y_ Z_ ;
is commanded and the programmable mirror image is canceled.
CAUTION
If mirror image is specified only for one axis on the specified
plane, the operation of the commands is as follows:
D Arc command: The rotation direction is reversed.
D Cutter compensation: The offset direction is reversed.
D Coordinate rotation: The rotation angle is reversed.
When shape of the workpiece is symmetric to an axis, a program for
machining the whole part can be prepared by programming a part of the
workpiece using programmable mirror image and sub program.
Main program
N10 G00 G90 ;
N20 M98 P9000 ;
N30 G51.1 X50.0 ;
N40 M98 P9000 ;
N50 G51.1 Y50.0 ;
N60 M98 P9000 ;
N70 G50.1 X0 ;
(Cancel only X–axis)
N80 M98 P9000 ;
N90 G50.1 Y0 ;
Y
50
0
X
60
100
(1)(2)
(3) (4)
Axis of symmetry (X=50)
Axis of symmetry
(Y=50)
Sub program
O9000 ;
G00 G90 X60.0 Y60.0 ;
G01 X100.0 F100 ;
G01 Y100.0 ;
G01 X60.0 Y60.0 ;
M99
50 60 100
13.10
PROGRAMMABLE
MIRROR IMAGE
(G50.1, G51.1)
(M series)
M series