
B–63522EN/02
16. COORDINATE SYSTEM
CONVERSION
NC FUNCTION
231
Patterns specified by the program can be rotated. For example, by using
this function, when the attached workpiece comes in a position which is
somewhat rotated from the machine coordinates, the position can be
compensated by the rotation instruction.
If a pattern is similar to that made by rotating a programmed figure, the
program for the pattern can be created by calling the program for the figure
as a sub program, and rotating the coordinates in the program. This
function reduces the programming time and program length.
Rotation angle
Rotation
center
Y
X
0
α, β : Coordinate valne of rotation center specify two axes from X, Y,
Z axes of G17, G18, G19.(These are always absolute values.)
R : Rotation (+ for the counterclockwise direction.
Specified in absolute value. It can be also specified
in incremental values according to the parameter setting. )
G17
G18
G19
G68 α_ β_ R_ ;
M series
G17
G18
G19
G68.1 α_ β_ R_ ;
T series
G69 ;
Coordinate system rotation mode
(Coordinate system rotates.)
Coordinate system rotation cancel
G69 ;
Coordinate system rotation mode
(Coordinate system rotates.)
Coordinate system rotation cancel
16.1
COORDINATE
SYSTEM ROTATION
(G68, G69) –
(M SERIES)
(G68.1, G69.1) –
(T SERIES)
Format