
5.PROGRAM INPUT NC FUNCTION B-63942EN/02
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5.36.3 Pattern Repeating
This function permits cutting a fixed pattern repeatedly, with a pattern
being displaced bit by bit. By this cutting cycle, it is possible to
efficiently cut working whose rough shape has already been made by
a rough machining, forging or casting method, etc.
Format
ZpXp plane
G73 W(∆k) U(∆i) R(d) ;
G73 P(ns) Q(nf) U(∆u) W(∆w) F(f ) S(s ) T(t ) ;
N (ns) ;
...
N (nf) ;
∆i : Distance of escape in the direction of the second axis
on the plane (X-axis for the ZX plane)
∆k : Distance of escape in the direction of the first axis on
the plane (Z-axis for the ZX plane)
d : The number of division (This value is the same as the
repetitive count for rough cutting.)
ns : Sequence number of the first block for the program of
target figure (finishing shape)
nf : Sequence number of the last block for the program of
target figure (finishing shape)
∆u : Distance of the finishing allowance in the direction of
the second axis on the plane (X-axis for the ZX plane)
∆w : Distance of the finishing allowance in the direction of
the first axis on the plane (Z-axis for the ZX plane)
f, s, t : Any F, S, and T function contained in the blocks
between sequence number "ns" and "nf" are ignored,
and the F, S, and T functions in this G73 block are
effective.
The move command between A and B is specified in the
blocks from sequence number ns to nf.