Displaying calibration values – HEIDENHAIN TNC 640 (34059x-05) ISO programming User Manual
Page 522
Manual operation and setup
15.8 Calibrating a 3-D touch trigger probe
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TNC 640 | User's ManualDIN/ISO Programming | 1/2015
Calibration using a calibration sphere
Proceed as follows for manual calibration using a calibration sphere:
In the
Manual Operation mode, position the ball tip above the
center of the calibration sphere
Select the calibration function: Press the
CAL. R
soft key
Enter the diameter of the sphere
Enter the safety clearance
Enter the start angle
Enter the number of touch points
Select Length measurement, if applicable
Enter Datum for length, if applicable
Start the probing procedure: Press the machine
START button. The 3-D touch probe probes all
required touch points in an automatic probing
routine and calculates the effective ball-tip radius.
If probing from opposite orientations is possible,
the TNC calculates the center offset
Checking the results
Press the
OK soft key for the values to take effect
Press the
END soft key to terminate the calibrating
function. The TNC logs the calibration process in
TCHPRMAN.html.
In order to be able to determine the ball-tip center
misalignment, the TNC needs to be specially
prepared by the machine manufacturer.
Refer to your machine manual.
Displaying calibration values
The TNC saves the effective length and effective radius of the
touch probe in the tool table. The TNC saves the ball-tip center
misalignment in the touch-probe table, in the
CAL_OF1 (principal
axis) and
CAL_OF2 (minor axis) columns. You can display the values
on the screen by pressing the
TOUCH PROBE TABLE soft key.
During calibration, the TNC automatically creates the
TCHPRMAN.html log file to which the calibration values are saved.
Make sure that you have activated the correct tool
number before using the touch probe, regardless
of whether you wish to run the touch probe cycle
in automatic mode or in the
Manual Operation
operating mode.
For more information about the touch probe table,
refer to the User’s Manual for Cycle Programming.