HEIDENHAIN TNC 370 User Manual page 291

9 3D Touch Probes
9.6 Measuring Tools with the lT 120 Touch Probe
Calibrating the lT 120
* Before calibrating tha touch prrab;e, yau must enter the exact length and radius of the calibrating tmt into the
tcml table TOQC.1".
* The posttim of thle 'ITT 120 within the machine work@ space must be defined by setting th@ machine
parmtjtsrs 658O.Q to 6580.2 {.WB page 't2-5).
The lT 120 is calibrated automatically with the measuring cycle TCH
PROBE 30. The TNC also determines the center misalignment of the
calibrating tool. For this operation, the spindle is rotated by 180" when
the first half of the calibration cycle has been executed. The calibrating
tool must be a perfectly cylindrical part, such as a cylindrical pin. The
resulting calibration values are stored in the TNC memory and are
accounted for during subsequent tool measurement.
To program TCH PROBE 30.0:
Select the probing functions.
1 W) /
Select the calibration cycle.
Enter the position in the tool axis at which there is no danger of
collision with the workpiece or fixtures.
Resulting NC blocks:
TOOL CALL 1 Z
TCH PROBE 30.0 CALIBRATE 77
TCH PROBE 30.1 HEIGHT +90
TNC 370
9-33