Yaskawa J50M Instructions User Manual
Page 88
2.9.29.5 IMPROVED COMMAND PROCEDURE FOR
BORING AND BACK BORING
w:
New initial point (absolute /increment )
Setting data (#6211)
The
G77 shift direction can now not only be
specified by setting, but can also be commanded in
the program.
The dwell time before shift can also
be given by setting #6210 or by the program
command,
This makes commanding of
easier.
Notes:
1.
When the pitch dwell is commanded by the
program, it has priority over setting #6212.
When program command is not given, dwell is
performed by entering a numeral in the setting
(1 = 1 ins).
PO also follows #62 12.
G76
Dwell
time
2.
The default of the hole-bottom dwell can also be
set by #6212.
3.
C and Q are incremental amounts without sign.
S h i f t d i r e c t i o n d e s i g n a t i o n
G 74 Reverse tapping
2.9.29.6 2-STEP DRILLING CYCLE
G74 X,. , Y., . Z.. . R.. . P.. . L.. . F.. . E.. . Q.. .
Two-step drilling cycle
is
provided to correspond
with drilling cycles of hollow workplaces, such as
castings.
100 is added to the canned cycles of the
as the 2-step drilling command
w . . . .
2.9.29.7 IMPROVED COMMAND PROCEDURE FOR THE
CYCLE
In the tapping cycle, dwell can be commanded upon
R point return and initial point return, in addition
to the hole-bottom dwell.
This can absorb the
elongation of the tapper.
G 73 High-speed deep hole drilling
●
: Dwell
G 7 3 X . . . Y . . . Z . . . R . . . Q . . . I . . . . F . . . C . . . P . . .
o :
S i n g l e - b l o c k s t o p
( F i x e d p i t c h )
w
;
. . .
Return feedrate (Z point
R point)
R point dwell
New initial point (Absolute /incremental)
G73 X.. . Y... Z.. . R... I... J.. . K... L... F.. , ‘
:
w:
c
P... w... ;
. . .
( Variable pitch)
G76
Example:
Fixed pitch
G76
Boring
x . . . Y.. . Z.. . R... Q.. . L... F... P...
w
;
. . .
(Fixed shift)
Y)
G76
X Y.. . Z.. . R.. . I.. . J.. . L.. . F.. . P.. .
. . .
w
;
. . .
(Variable shift)
I
W POINT
I
AFTER DWELL
SHIFT
SPINDLE
POINT
: S i n g l e - b l o c k s t o p
INDEXING STOP
Q
Temporary R point return depth (increment)
OR (I, J) SHIFT
Hole-bottom dwell
●
:
Dwell
o :
Single-block stop
c:
P :
80