Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 757)

Chapter 30
Using a 9/Series Dual--Processing System
30-17
Figure 30.6
Identical Thread Is Cut When Start Point Is Shifted Using Equation
Process 1
1st Threading Pass
Process 2
2nd Threading Pass
Marker
.025
12601-I
Example 30.6
Threading on Both Processes with a Shared Spindle
Process 1 Comment Process 2 Comment
N1 G00 X10. Z10 S500. M03; Move to process 1 start point and start
spindle rotation
N1 G00 X10. Z11.; Z start point is shifted one inch from
process 2
N3 G21 X4.8 Z5. E2.; Start threading on process 1
N2 M100; Synchronize to make sure process two
cuts thread behind process 1
N2 M100; Allow process 2 to start threading
N3 G21 X4.65 Z5. E2.; Start threading on process 2
N4 X4.5;G04P5;
N4 X4.4;
N5 X4.35;
N5 4.3;