
13. FUNCTIONS TO SIMPLIFY PROGRAMMING
13.1 Canned Cycles (G73, G74, G76, G78, G79, G80 to G89)
13.1.10 G86 (boring cycle)
G86
CJ
J
Spindle CW
.
.
A
l .
l .
l .
Initial
.
l :
l .
l .
.
point
l :
l .
l .
l .
l .
l .
v
.
0 ! Point R
I
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Bottom point
.
0:
of the hole
x
Spindle stop
This is the
same 8s G81, but the spindle stops at the bottom of the hole and is
retracted at the rapid traverse rate.
13.1.1 I G87 (boring cycle/back boring cycle)
687
asD
/
b_
0
Spindle CW
.
.
.
A
.
@ a i i Bottom point
.
.
.
0
i of the hole
.
.
.
.
.
.
.
.
i Point R
The spindle stops at the orientation position. The spindle is positioned at the bottom of
the hoi6 (point R) at the rapid traverse rate. The spindle rotates clockwise. Machining
is performed up to the point X in the positive direction of the X axis. At this position,
the spindle again stops at the orientation position and shifts in the direction
opposite
to the tool and the tool is withdrawn from the hole. After the tool returns to the initial
point: The spindle rotates clockwise and the tool moves according to the command of
the next block.
I -59