
11. PROGRAM COMMAND
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6) The probe moves at the rapid traverse rate to the center X coordinate
where it was before the start of measurement, and makes the same
measurement as stated above in the negative X–axis direction and the
Y–axis direction (the first measurement session).
7) The probe moves at the speed fa in the positive X–axis direction to a
point the distance ”first–measurement session measurement position
– b” away from the measurement start point.
8) The probe moves at the specified speed F in the range ”b + g” until it
touches the measurement face.
9) The probe returns through the distance e at the rapid traverse rate.
10) The probe moves at the rapid traverse rate to the point where it was
before the start of measurement along the Z–axis.
11) The probe moves at the rapid traverse rate to the center X coordinate
where it was before the start of measurement, and makes the same
measurement as stated above in the negative X–axis direction and the
Y–axis direction (the second measurement session).
Executing G183 obtains the center and radius of the cylinder from
measured values, and outputs the obtained values to the W–specified
workpiece zero point offset value and the following macro variables:
#250: Center X coordinate of the cylinder circle (machine coordinate
system)
#251: Center Y coordinate of the cylinder circle (machine coordinate
system)
#252: Center X coordinate of the cylinder circle (workpiece
coordinate system)
#253: Center Y coordinate of the cylinder circle (workpiece
coordinate system)
#254: Cylinder radius
The center position and inside radius of a cylinder are measured by
creating a G code program in the following format:
G184Z__R__F__W__ ;
R
Z
ag
b
Measurement start point
Second measurement
session
First measurement
session
Stylus ball radius
Z: Height along the Z–axis
Specifies the distance from the measurement start point to the
measurement point along the Z–axis.
R: Inside radius
Specifies the nominal inside radius of a cylinder.
D Measuring a cylinder
inside radius (G184)