Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 635)

Milling Fixed Cycles
Chapter 26
26-3
In general, milling fixed cycles consist of the following operations (see
Figure 26.1):
Figure 26.1
Milling Fixed Cycle Operations
Operations at hole bottom
Return to R
point level
Machining
Rapid return to
initial point level
Positioning to
initial point
Rapid feed to
R point level
initial point
level
R point level
Hole bottom
Cutting feed
Rapid feed
Manual operation
The system installer determines if the positioning to initial point is always
a rapid move, or if it is necessary to program a G00 or G01 to select a
mode. This manual assumes rapid positioning.