
2000/02/08 H. Minami
A-78392EN
FANUC Series 16i/18i/21i-MA
Embedded macro for measurement
Title
Drawing No.
Page
Descri
tionDateEdit
25/36
Note ) Please be sure to move the probe to the approximate measuring start point
before executing this cycle.
Movements
:
1. The probe moves the distance (U –
α
– stylus radius) with feed-rate (fa).
2. Moving within the distance (U +
γ
– stylus radius) with the feed-rate (f) until touching
the work-piece.
→
First measurement
3. Return the distance (
β
) with rapid traverse.
4. Moving within the distance (
β
+
γ
) with the feed-rate (F) until touching the work-piece.
→
Second measurement
5. Repeat steps 1. to 4. at the second, third and fourth measuring point.
When
G188
is executed, the system will calculate the corner position from measurement
position and output it to the work-piece origin offset value and the following variables.
#250
: X coordinate of corner (Machine coordinate system)
#251
: Y coordinate of corner (Machine coordinate system)
#252
: X coordinate of corner (Work-piece coordinate system)
#253
: Y coordinate of corner (Work-piece coordinate system)
4-10. Bolt-hole-circle measurement (G189)
This is a menu for measuring a center position and radius of a bolt-hole-circle by using 3
holes.
Create ISO code program in the following form.
G189 Z R D A B C F W ;
Z
D
R
1
st
Hole
C
A
B
Measuring
start point
3
rd
Hole
2
nd
Hole