6. Interpolation Functions
6.3 Plane Selection
42
6.3 Plane Selection; G17, G18, G19
Function and purpose
The plane to which the movement of the tool during the circle interpolation (including helical
cutting) and tool radius compensation command belongs is selected.
By registering the basic three axes and the corresponding parallel axis as parameters, a plane can
be selected by two axes that are not the parallel axis. If the rotary axis is registered as a parallel
axis, a plane that contains the rotary axis can be selected.
The plane selection is as follows:
•
Plane that executes circular interpolation (including helical cutting)
•
Plane that executes tool radius compensation
•
Plane that executes fixed cycle positioning.
Command format
G17 ;
G18 ;
G19 ;
(ZX plane selection)
(YZ plane selection)
(XY plane selection)
X, Y and Z indicate each coordinate axis or the parallel axis.
Parameter entry
Table 1 Example of plane selection parameter entry
#1026 to 1028
base_I,J,K
#1029 to 1039
aux_I,J,K
I X
U
J Y
K Z
V
As shown in the above example, the basic axis and its parallel axis can be registered.
The basic axis can be an axis other than X, Y and Z.
Axes that are not registered are irrelevant to the plane selection.