Yaskawa J50M Instructions - Manual (Page 84)

2.9.28 CANNED CYCLES
G89, G98, G99) t (Cent’d)
(G73, G74, G76, G77, G80 TO
Variable command G83)
In the deep hole drilling cycles of G73 and G83,
variable drilling pitch can be programmed with
addresses 1,
instead of address Q for pro-
gramming a constant drilling pitch.
I
K
K“
K’
K ’ :
I: Initial value
J:
Command is
Reducing value in 2nd
and subsequent plunges
given without
signs
K :
I
plunge to Z
INT
1-2
I-(n-l
POINT Z INT
(a) With G73 (b) With G83
Fig. 2.74
The value of is given by setting ( #6211 for
G73, #6213 for
Notes :
Q, I, J, K are modal during canned cycle modes
and are effective until the canned cycle is
celled.
Specify them without signs.
Variable pitch can also be programmed by address
instead of I. Furthermore, when commands
I, J, K
are given simultaneously, drilling cycle is executed
with variable drilling pitch with
as the initial value.
must be commanded in the block including modal
G code before programming variable pitch with I, J,
and K.
EXAMPLE
G91 G73 . . R-30. Z-55.
J1. K4. . ;
R
z
Drilling pitch
1st plunge . . . 10 mm 110.
2nd plunge ..0 9 mm
3rd plunge .0. 8 mm
4th plunge . . . 7 mm
5th plunge . . . 6 mm
6th plunge . . . 5 mm
7th plunge . . . 4 mm K4.
8th plunge . . . 4 mm
9th plunge . . . 2 mm
Total 55.00 mm z - 5 5 .
76