Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 353)

Chapter
13
13-1
Coordinate Control
This chapter describes:
How to: On page:
rotate a coordinate system 13-1
select a plane 13-11
use absolute and incremental modes 13-12
apply inch and metric measures 13-13
use scaling 13-14
The control has a feature (G68) that can rotate the work coordinate system.
There is also a feature called External Part Rotation which rotates all work
coordinate systems by simulating a rotation of the machine coordinate
system. Rotating the coordinate systems can prove to be useful when
cutting a part that contains symmetrical geometries (see Figure 13.1).
Figure 13.1
Part With Symmetrical Geometry
Y
X
This lobe cut
after G68 rotation
of 180
•
This lobe cut
after G68 rotation
of 90
•
This lobe cut
in sub program
This lobe cut
after G68
rotation
of 270
•
X10.Y10.
13.0
Chapter Overview
13.1
Rotating the Coordinate
Systems