Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 653)

Drilling Cycles
Chapter 26
26-27
The format for the G86 cycle is:
G86X__Z__R__P__F__L__;
Where : Is :
X specifies location of the hole.
Z defines the hole bottom.
R defines the R point level.
P defines the dwell period at hole bottom.
F defines the cutting feedrate.
L defines the number of times the drilling cycle is repeated.
See page 26-7 for a detailed description of these parameters.
Important: The programmer or operator must start spindle or live tool
rotation.
Figure 26.11
G86: Boring Cycle, Spindle Stop/Rapid Out
Hole bottom
R point level
Initial point
level
Spindle or live tool stops
at hole bottom
5
6
1
2 3 4
Cutting feed
Rapid feed
(G86): Boring Cycle,
Spindle Stop/Rapid Out