FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

PROGRAMMING
15. COMPENSATION FUNCTION
B–62754EN/01
268
The tool, when moving from the stating position toward the measurement
position predicted by x
a
or z
a
in G36 or G37, is fed at the rapid traverse
rate across area A. Then the tool stops at point T (x
a
γ
x
or z
a
γ
z
) and
moves at the measurement feedrate set by parameter (No.6241) across
areas B, C, and D. If the approach end signal turns on during movement
across area B, alarm is generated. If the approach end signal does not turn
on before point V, and tool stops at point V and P/S alarm (No.080) is
generated.
ε
γ
TS (x
s
, z
s
)
X, Z
F
R
F
P
UV
|x
a
–x
s
|. |z
a
–z
s
|
U (x
a
, z
a
)
Starting position
ε
F
R
: Rapid traverse rate
F
P
: Measurement feedrate (set by parameter(No.6241))
ABCD
Predicted measurement position
Fig.15.6(a) Feedrate and Alarm
If bit 3 (G36) of parameter No. 3405 has been set to 1, G37.1 and G37.2
are used as the G codes for automatic tool compensation for the X– and
Z–axes, respectively.
Z–axis measurement
position
Programmed
zero point
X–axis
measurement
position
100
800
300
50
380
Offset value Offset value
(Before measurement) (After measurement)
X 100.0 98.0
Z 0 4.0
Tool number T1
G50 X760.0 Z1100.0 ; Programming of absolute zero point
(Coordinate system setting)
S01 M03 T0101 ; Specifies tool T1, offset number 1, and spindle
revolution
D Feedrate and alarm
D G code
Examples

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