
PROGRAMMING
B–63124EN/01
14. FUNCTIONS TO SIMPLIFY
PROGRAMMING
173
. . . . . . . . . .
V04 ;
If macro numbers 01, 02, 03 and 04 are called sequentially by the
multi-piece machining command in this case, machining proceeds as
follows.
1) Tool T31 performs full machining on all product parts.
2) Then, T22 performs full machining on all product parts.
3) Then, T33 performs full machining on all product parts.
4) Then, T11 performs full machining on all product parts.
Thus, its tool change is completed by only four steps so that tool change
time is considerably decreased compared with method 1.
Specify any of the following commands, and then multi-piece machining
is performed by calling machining commands stored using the macro
function.
G73 W
ωn Q q ; or
G74 W
ωn Q q ;
where
ωn: A macro number
q: Machining start area specification
q=1 Machining starts from the lower left area ( in Fig. 14.5.1 (a))
q=2 Machining starts from the lower right area ( in Fig. 14.5.1 (a))
q=3 Machining starts from the upper left area ( in Fig. 14.5.1 (a))
q=4 Machining starts from the upper right area ( in Fig. 14.5.1 (a))
G73 goes on punching in the X axial direction, whereas G74 goes on
punching in the Y axial direction in grid parts-line.
In the example shown in Figure 14.5.1 (b) to start machining from area
and to punch in the X axial direction, specify the following commands
for the respective methods:
Method 1: G73 W01 Q1;
Method 2: G73 W01 Q1;
G73 W02 Q1;
G73 W03 Q1;
G73 W04 Q1;
Let the number of tool required to machine products for one sheet be n,
and method 2 requires n times of commands G73/G74 to be specified.
In such a case, several macro numbers can be represented by a single
macro number if machining start area (specified by Q) and machining
direction (G73/G74) are both the same with respect to the corresponding
tools. Macro numbers to be provided for this purpose are 90 to 99. (These
are called multiple macro storage numbers hereafter.)
To store macro numbers 01, 02 and 04 as a single macro number 90 in the
example shown in Fig. 14.5.1 (b), specify as follows.
U90 ;
14.5.2
Multi-Piece Machining
Commands (G73, G74)