HEIDENHAIN TNC 640, User Manual, Page: 764 / 948

Manual Operation and Setup | Calibrating 3-D touch probes
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
3-D calibration with a calibration sphere (option 92)
In addition to calibrating with a calibration sphere, the control
also enables the touch probe to be calibrated dependent on the
angle. For this purpose the control probes the calibration sphere
in a quarter circle in the perpendicular. The 3-D calibration data
specifies the deflection behaviour of the touch probe in any probing
direction.
The
3D-ToolComp
software option (option 92) is required for this.
Execute calibration using a calibration sphere
Enter the number of touch points
Press the
NC Start
key
The 3-D touch probe probes all required touch
points in an automatic probing routine.
Press the
OK
soft key.
Press the
END
soft key to terminate the
calibrating function.
The control saves the deviations in a
compensation value table under
TNC:\system
\3D-ToolComp
.
The control creates a specific table for each calibrated touch probe.
In the tool table the
DR2TABLE
column is automatically referenced
to this.
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.
For more information about the touch probe table, refer
to the User’s Manual for Cycle Programming