Okuma OSP-P200L Programming Manual page 76

1-8-2. Behavior on Entering Tool Nose Radius Compensation Mode
N0 G00
N1 G42
N2 G01
The following example uses the program above to perform OD cuts with an OD turning tool.
N2 ( Z2, X2 ) Workpiece
Without the tool nose radius compensation function, positioning is performed so that the tool tip
reference point is located exactly at the programmed coordinates. At the start up of the tool nose
radius compensation mode activated by either G41 or G42, positioning is carried out so that the tool
tip circle contacts the segment passing the programmed coordinates in the block containing G41 or
G42 and those in the next block. This motion of the axes is called "Start-Up".
•
At the start up of the tool nose radius compensation mode, both X- and Z-axis may move even
if the block contains only one dimension word, either X or Z.
N1 G00
N2 G42
N3 G01
X+
Although the programmer might expect the axis movement indicated by broken lines because
the N2 block contains only an X word, the actual tool path generated at the start up of the tool
nose radius compensation mode is as shown by solid lines.
X0 Z0
X1 Z1 TΟΟΟΟΟΟ
X2 Z2
( Z2c, X2c )
X100 Z100 S1000
X80
Z50 F0.2
Z+
N3
SECTION 6 OFFSET FUNCTION
( Z0c, X0c )
Starting point N0 ( Z0, X0 )
( Z1c, X2c )
N1 ( Z1, X1 )
T010101 M3
N1
N2
5238-E P-63
LE33013R0300800090001
LE33013R0300800090002
LE33013R0300800090003