Displaying Calibration Values - HEIDENHAIN TNC 620 User Manual
Setup, testing and running nc programs
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5
Calibration using a calibration sphere
For manual calibration using a calibration sphere, proceed as
follows:
In the Manual operation mode, position the ball
tip above the center of the calibration sphere
Select the calibrating function: Press the
Calibration of TS on a sphere 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
(main axis) and CAL_OF2 (secondary axis). You can display the
values on the screen by pressing the TCH PROBE TABLE soft key.
Further information: "Touch probe table", Page 148
During calibration, the control automatically creates the
TCHPRMAN.html log file to which the calibration values are saved.
Ensure that the tool number in the tool table and the
touch-probe number of the touch-probe table match. This
is regardless of whether you want to use a touch-probe
cycle in automatic mode or in Manual operation mode.
220
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022
Setup | Calibrating 3-D touch probes (option 17)
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