Displaying Calibration Values - HEIDENHAIN TNC 620 User Manual

5
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 outside diameter of the ball
Enter the safety clearance
Enter the start angle
Enter the number of touch points
Select Length measurement, if applicable
If necessary, input the reference for the length
Probe: Press the NC Start key
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
control calculates the center offset.
Check results
Press the OK soft key for the values to take
effect
Press the END soft key to terminate the
calibrating function
The control logs the calibration process in the
TCHPRMAN.html file.
Refer to your machine manual.
In order to be able to determine ball-tip center
misalignment, the control needs to be specially
prepared by the machine manufacturer.

Displaying calibration values

The control saves the effective length and effective radius of the
touch probe in the tool table. The control saves the touch probe
center offset to the touch probe table in the columns CAL_OF1
(principal axis) and CAL_OF2 (minor axis). You can display the
values on the screen by pressing the TCH PROBE TABLE soft key.
During calibration, the control automatically creates the
TCHPRMAN.html log file to which the calibration values are saved.
Ensure that the tool number of the tool table and
the touch-probe number of the touch-probe table are
correct. This is regardless of whether you want to
use a touch-probe cycle in automatic mode or Manual
operation mode.
Further information:
Manual
208
Cycle Programming User's
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 10/2018
Setup | Calibrating 3-D touch probes (option 17)