2.8.32 GROOVE WIDTH COMPENSATION
(G150, G 151)”
Groove width compensation is to shift the
coordinate for the groove tool width and to change
the tool nose point by the G151 command,
according to the tool width and control point set
via the offset screen.
This function allows groove
machining without considering g the tool width in the
program.
G150 . . .
Groove width compensation OFF
G151 ...
Groove width compensation ON
Contrl point diagram
The compensation command shifts the tool nose
point as follows.
The compensation is canceled by
the G150 command or by the T command.
Inner, outer diameter groove
L1
End face groove
Set the tool width in the offset numbers from
OF S31, as follows.
(Example)
Offset
Tool width
Tool
fdo. 4
OFS04X, Z, R, C
OFS34X, Z
Tool No. 5
OFS05X, Z, R, C
OFS35X, Z
TOOI No. 6
OFS06X, Z, R, C
OFS36X, Z
A control point is the tool nose point used in the
automatic nose R function,
which is indicated by
1!CT! on the
right corner of the offset screen.
When it is a diameter designation, the X-value end
face groove is shifted by two times the tool width.
Commanding shift on both X and Z axes can be set
in the parameter to trigger an alarm.
fPM6018
DO 1: Alarm occurs upon Xl Z axes ~
shift in groove compensation.
o:
Alarm does not occur upon X/Z ‘
axes shift in groove
\
compensation.
)
Notes :
1.
2.
3.
4.
The program cannot be started under the
G151 status. Always cancel G151 once before
starting the program,
Commanding G151 without commanding the
control point will cause an alarm, as the
direction of the shift cannot be determined.
G150, G151 are members of group 13.
This G code cannot be used unless the new
optional coordinate system setting function is
provided.
( Example of groove width compensation program)
GOO XO:
G151 ;’ . . . . . .
Enable compensation
Zo;
X-20;
Shift the coordinate for the tool
width.
GO1 Z1O;
The shift amount is set as offset
number.
GOO XO;
G150; . . . . . .
Cancel compensation
Zo;
147
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