HEIDENHAIN TNC 310 (286 140) - Manual (Page 216)

12 3-D Touch Probes 204
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The center misalignment is measured after the effective ball tip
radius is calibrated.
ú In the MANUAL OPERATION mode, position the ball tip in the
bore of the ring gauge.
ú To select the calibration function for the ball-tip
radius and the touch probe center misalignment,
press the CAL R soft key.
ú Select the tool axis and enter the radius of the ring
gauge.
ú To start probing: 4 x NC START button. The touch
probe contacts a position on the bore in each axis
direction and calculates the effective ball-tip radius.
ú If you want to terminate the calibration function at
this point, press the END soft key.
ú If you want to determine the ball-tip center
misalignment, press the 180° soft key. The TNC
rotates the touch probe by 180°.
ú To start probing: 4 x NC START button. The touch
probe contacts a position on the bore in each axis
direction and calculates the ball-tip center
misalignment.
Displaying calibration values
The TNC stores the effective length and radius, and the center
misalignment for use when the touch probe is needed again. You
can display the values on the screen with the soft keys CAL L and
CAL R.
Compensating workpiece misalignment
The TNC electronically compensates workpiece misalignment by
computing a “basic rotation.”
For this purpose, the TNC sets the rotation angle to the desired
angle with respect to the reference axis in the working plane. See
figure at lower right.
Select the probe direction perpendicular to the angle
reference axis when measuring workpiece
misalignment.
To ensure that the basic rotation is calculated correctly
during program run, program both coordinates of the
working plane in the first positioning block.
12.1 T
o
u
c
h
P
robe Cy
cles in the Manual Oper
ation Mode