2.8.25.6 Peck Drilling in Z-axis (G 74) (Cent’d)
Notes :
1.
2.
3.
4.
5.
6.
7.
Addresses I, K and D must be programmed
without signs.
When the command of I >lU/21 is issued,
the cycle finishes after the finish of the
pecking motion from position B following
the pecking motion from position A.
When the command of K > I W I is issued,
the cutting is made at once to the cutting
bottom without the pecking motion.
When D is programmed as O or D is not
programmed, the retracting motion is not
made at the cutting bottom.
The final cutting amount in the Z direction
K‘ and the final move amount in the X direc-
tion I’ are automatically calculated.
If X(U) , I or D is omitted, only one-cycle
operation is made in the direction of Z-axis,
which is used for drilling.
When the contents of setting #6204 are set
to O, the cutting is made at once to the cut-
ting bottom without pecking motion.
2. 8.25.7 Grooving in X-Axis (G 75)
(1) This command permits the operation of peck
drilling with pecking motion in parallel with
X–axis.
a.
Command format
G 75
x(
+...
Z(!A
—.
8. The tool nose radius compensation is ineffec-
tive for G74 and G75.
EXAMPLE
G74 X40. Z50. 14. K15. D1. FO. 25 ;
+x
-h:-=53
1
15
4
80.DIA
\
40.DIA
50.
120.
—.
‘TT~te=
Retracting amount of the tool at the
cutt!ng bottom (without signs)
Move amount jn Z-axis d(rection (wtthout signs)
wttmg
depth (n X-axw d!rection (without s(gns)
coordinate of posit{on B
-z
X coordinate of pos(tlon C
108
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