37
Y-750
；
Positioning, drill hole 3, then return to the R point
X1000
；
Positioning, drill hole 4, then return to the R point
Y-550
；
Positioning, drill hole 5, then return to the R point
G98 Y-750
；
Positioning, drill hole 6, then return to the R point
G80 G28 G91 X0 Y0 Z0
；
Return to the reference point
M5
；
Stop rotating spindle
M30
；
Program end
13.3.2 Fine Boring Cycle
（
G76
）
Instruction format
：
G76 X_ Y_ Z_ R_ Q_ P_ F_ K_ ;
X_ Y_
：
Hole location data
Z_
：
Absolute coordinates of the bottom of the hole
（
absolute value method
）
The distance from R point to the bottom of the hole
（
incremental value method
）
R_
：
Absolute coordinates of the bottom of the R point
（
absolute value method
）
The distance from the initial position to the R point
（
incremental value method
）
Q_
：
The offset at the bottom of the bore
P_
：
Pause time
F_
：
Cut feed speed
K_
：
Times of repetition
Fig. 13-5
Cycle used for boring precision boring, when arrived at the bottom of the hole, the spindle stop and must stop,
mobile after offset, out of hole machining.
