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2.13
PROGRAM SUPPORT FUNCTIONS (Cont'd)
•
G74 command
Operates in the same
way
as
G84
except
that
spindle forward in
(3)
for G84 is
reverse
rotation for G74. and than
spindle reverse
rota¬
tion in
(6)
for G84 is forward rotation
for G74.
(iv)
G94 command
When the
G94
command is
executed, the
G93 solid
tap
mode
is
canceled. If G84/G74
is
commanded in this
mode,
tap movement
is
changed
to
the conventional
type.
(d)
Program example
N1 G92 XO YO
ZO:
(M
*
*)
:
N2 G93
;
N3 G98 G90 :
N4 G84
X100. Y100. Z-50 R-20. FI. S3000
;
X200. Y200.
;
X10. Y10. :
N5
N6
N7 GSO
:
N8
G94 :
Table 2.13.8 Description of
Movement
Description of
movement
Spindle gear
A/B
change (Only
gear A
used when this
command is
not
provided.)
0
©
Solid
tap
mode
ON
(3)
Canned
cycle
modal information
Solid
tapped
at (100., 100.)
with 1mm pitch
Solid
tapped
at
(200., 200.)
with
I mm pitch
©
Solid
tapped
at
(10.. 10.)
with 1mm pitch
<Z'
Canned
cycle
canceled
Solid
tap
mode OFF
-
196
-
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