GSK GSK980TDc, Manual

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GSK980TDc Turning CNC System User Manual
106
Ⅰ
Progra
mming
● G96, G97, G98, G99, G40, G41, G42 are invalid when G73 is executed, and are valid when
G70 is executed.
● When G73 is executed, the system can stop the automatic run and manual traverse, but
return to the position before manual traversing when G73 is executed again, otherwise, the
following path will be wrong.
●
When the system is executing the feed hold or single block, the program pauses after the
system has executed end point of current path.
●
i
△
, u are specified by the same U and Δ k
△
, Δ w are specified by the same U, and they are
different with or without being specified P,Q commands.
● G73 cannot be executed in MDI, otherwise, the system alarms.
●
There are no the same block number in ns~nf when compound cycle commands are
executed repetitively in one program.
● The tool retraction point should be high or low as possible to avoid crashing the workpiece.
Coordinate offset direction with finishing allowance:
Δ i, Δ k define the coordinates offset and its direction of roughing; Δ u, Δ w define the coordinate
offset and the cut-in direction in finishing, and their sign symbols are as follows Fig. 3-32: A is tool
start-up point, B
→ C for workpiece contour, B’ → C’ for roughing contour and B’’ → C’’ for finishing path.
1
）Δ
i
<
0
Δ
k>0
， △
u
<
0 Δ w>0
；
2
）Δ
i>0
Δ
k>0
， △
u>0 Δ w>0
；
A
’
B
A
Z
X
Z
X
B ’
A ’’
B ’’
C
C ’
C ’’
A
A
’
A ’’
B
B ’
B ’’
C
C ’
C
’’
3
）Δ i <0 Δ k <0， △u<0 Δ w<0； 4 ）Δ i >0 Δ k <0， △u>0 Δ w<0；
Z
X
Z
X
A
A ’
A
’’
C
C
’
C
’’
B
B
’
B ’’
A
’
B
’
B
’’
C ’
A
A ’’
B
C
C ’’
Fig.3-32