Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Manual de usuario Pagina 343

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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 centerpoint ofZ5.,X4.fora
total rotation fromits original positionof 40
°.
N04 G69;
Returns the work coordinate system to itsoriginal position of0°.
Figure 11.16
Results of Example 11.11
After executing
blockN03
After executing
blockN02
After executing
blockN04
30
°
10°
Z
Z
Z
X
X
X
Centerpoint
forrotation
in blockN03
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.
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