Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 629)

Drilling Cycles
Chapter 26
26-3
In general, drilling cycles consist of the following operations (see
Figure 26.1):
Figure 26.1
Drilling Cycle Operations
Cutting feed
Rapid feed
R point level
Initial point
level
Positioning to
initial point
Rapid feed to
R point level
Machining
Operations at hole bottom
Rapid return to
initial point level
Return to R
point level
Hole bottom
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.