Manual

Drilling Cycles
Chapter 26
26-9
The format for the G81 cycle is:
G81X__Z__R__F__L__;
Where : Is :
X specifies location of thehole.
Z defines the holebottom.
R defines the Rpoint level.
F defines the cuttingfeedrate.
L defines the numberof times thedrilling cycleis 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 26.4
G81: Drilling Cycle withoutDwell
4
2
RZ
3
1
R point level
Initial point
level
Hole bottom
Cutting feed
Rapid feed
(G81): Drilling Cycle, No
Dwell/Rapid Out