PROGRAMMING9. PRESSING FUNCTION
1 The maximum pitches in G68 and G69 are set by
parameters No. 16186 (for mm input) and No. 16187 (for
2 If T code is commanded in G68 or G69 block, nibbling is
started after the X and Y axes have moved to the first punch
point and also a tool has been selected.
3 M code is not commandable in G68 and G69 blocks.
4 For the rapid traverse to the first punch point, the rapid
traverse override is effective when it is specified by the rapid
traverse override switch on the machine operator’s panel or
by F1-digit specification. For the pitch movement up to the
final point, the rapid traverse override is ineffective and fixed
5 If G68 or G69 is commanded using the single block
operation, nibbling is made up to the last punch point, and
6 If feed hold is applied halfway during the movement to the
first punch point, the X and Y axes stop at once.
These axes also stop immediately when the feed hold is
applied halfway during the pitch movement from the first
point to the last point.
However, this can be changed by parameter NSP (No.
16181#2) in such a way that the X and Y axes stop after
7 In a block just after G68 or G69, the tool does not move by
the incremental amount from the tool position when nibbling
ends, but moves from the programmed end point of the arc
or straight line by the incremental amount.
Movement of tool
Fig. 9.3.3 (a)
Incremental command just after circular nibbling (G68)
Notes on Circular
Nibbling (G68) and
Linear Nibbling (G69)