Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set User Manual
Page 343
Chapter 11
Coordinate Control
11-27
Example 11.11
Canceling G68 Rotations With G69
Program Block
Comment
N01 G54;
N02 G68Z0X0R10;
Rotates the current work coordinate system 10
°
.
N03 G68Z5.X4.R30;
Rotates the current work coordinate system 30
°
about a center point of Z5., X4. for a
total rotation from its original position of 40
°
.
N04 G69;
Returns the work coordinate system to its original position of 0
°
.
Figure 11.16
Results of Example 11.11
After executing
block N03
After executing
block N02
After executing
block N04
30
°
10
°
Z
Z
Z
X
X
X
Center point
for rotation
in block N03
12180-I
Rotating the work coordinate system can be helpful anytime a part has a
repetitive shape. This feature combined with the G52 work coordinate
system shift can reduce the size of a part program appreciably.
Example 11.12 is an example of this.