YASKAWA yasnac lx3 - Page 129

d.
If the threadcutting hold option is not se-
lected, depressing of the FEED HOLD during
thread cutting does not hold the operation,
which stops at point C where the retracting
operation is completed.
Six angles of thread can be used in Multi–
ple Repetitive cycle G76. In the G92 com-
mand, arbitrary angles of thread can be
performed for threading.
When G92 (threading cycle) is used with
chamfering ON, thread
activate alarm “064.”
2,8,26,3 Facing Cycle B (G 94)
(1) Straight facing cycle
G94 X(U).”” z(w) ”-”
pull-up value of O may
F(E).
The straight facing cycle @
executed by this command.
-x
l!-
2
r-l
A’ 3)
-.
A
“f?
I
START POINT A
u
a ;g, __:
Rap]a traverse
2 I
— : Spec!fled by F
,
~ B
+2
;
to @ is
(2) Taper facing cycle
G94 X( U)... Z(W) . . .
The taper facing cycle
cuted bv this command
+x
K.. . F(E) . . . :
~ to ~ is exe-
#.’
Q1 ,+
Rapid traVerSe
Fig. 2.65
The sign of figure following the address K
is decided by the direction of position A’
viewed from position B .
EXAMPLE :
N70 GOO X74. z32. ;
code
N71 G94 X20. Z30. K-5.29 FO.3 ;
N72 z25. ;
N73 Z20. ;
I
I
Fig. 2, 64
Since G94
is modal, the cycle operation will
be continued by specifying depth of cut in
the Z-axis direction in the following blocks
as follows.
z(w) . . . ;
z(w) . . . ;
EXAMPLE :
N60 GOO x65. Z42. ;
I
c;:’::es
N64 GOO. . . ;
-x
—-z
N74 GOO. . . ;
Three cycles
by G94 command
x
7.
2.
+2
(3) Cautions in programming G94
a.
T, S and M functions for G 94 cycle must be
specified as a rule beforehand in the preced-
ing blocks.
T, S and M blocks without move
commands are effectivein the effective area
of G94.
b. In
Single Block mode, the execution of G94
CYC~ is stopped after the completion of :3
to &l .
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