HEIDENHAIN TNC 410 User Manual

Page 263

12 3-D Touch Probes

250

In the Manual Operation mode, position the ball tip in the bore of
the ring gauge.

To select the calibration function for the ball-tip radius
and the touch probe center misalignment, press the
CAL R soft key.

Select the tool axis, enter the radius of the ring gauge.

To probe the workpiece, press the machine START
button four times. The touch probe contacts a position
on the bore in each axis direction and calculates the
effective ball-tip radius.

If you want to terminate the calibration function at this
point, press the END soft key.

If you want to determine the ball-tip center
misalignment, press the 180° soft key. The TNC rotates
the touch probe by 180°.

To probe the workpiece, press the machine START
button four times. 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.

Select the touch probe function: Press the PROBING
ROT soft key

Position the ball tip at a starting position near the first
touch point.

Select the probe direction perpendicular to the angle
reference axis: Select the axis with an arrow key.

To probe the workpiece, press the machine START
button.

Position the ball tip at a starting position near the
second touch point.

To probe the workpiece, press the machine START
button.

12.1 T

robe Cy

cles in the Manual and Electr

onic Handwheel Modes