Brother TC-32B - Rotational Transformation Function (G68, G69)

Chapter 3 Preparation Function TC-32B
2004/01/22 3 - 46 eTCOMNCPR3.doc
3
3.19 Rotational Transformation Function
(G68, G69)
The shape specified in the program is rotated.
Rotational transformation
G17
Command format G18 G68α_β_R_;
G19
Rotational transformation cancel
Command format G69;
αβ : Rotation center coordinates
R : Rotation angle (based on CCW)
Plane section command can be omitted. The plane currently selected is valid when it is omitted.
Relationship between selected plane and αβ.
Selected plane
αβ
G17 X Y
G18 Z X
G19 Y Z
Rotation angle (R) is specified within the range of -360.000 to 360.0000 programming mode.
The rotation angle in incremental programming mode is determined in reference to the angle after
the previous rotational transformation, and in reference to the α axis when it is the first rotational
transformation.
X
Y
After rotation
Rotation angle
Rotation center Before rotation