FANUC Series 16/18/160/180-Model C Machining Center Operators Manual

PROGRAMMING
14. FUNCTIONS TO SIMPLIFY
PROGRAMMING
B–62764EN/01
182
The fine boring cycle bores a hole precisely. When the bottom of the hole
has been reached, the spindle stops, and the tool is moved away from the
machined surface of the workpiece and retracted.
G76 (G98) G76 (G99)
G76 X_ Y_ Z_ R_ Q_ P_ F_ K_ ;
X_ Y_: Hole position data
Z_ : The distance from point R to the bottom of the hole
R_ : The distance from the initial level to point R level
Q_ : Shift amount at the bottom of a hole
P_ : Dwell time at the bottom of a hole
F_ : Cutting feedrate
K_ : Number of repeats
q
q
Shift amount q
Oriented spindle stop
Tool
OSS OSS
Point R
level
Point R
Point Z
Spindle CW
Initial level
Point Z
Point R
Spindle CW
P
P
WARNING
Q (shift at the bottom of a hole) is a modal value retained
within canned cycles. It must be specified carefully because
it is also used as the depth of cut for G73 and G83.
14.1.3
Fine Boring Cycle
(G76)
Format

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