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6 calibr a ting a 3-d t o uc h pr obe – HEIDENHAIN TNC 128 (77184x-01) User Manual

Page 301

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HEIDENHAIN TNC 128

301

1

1

.6 Calibr

a

ting a 3-D t

o

uc

h pr

obe

Proceed as follows for manual calibration with a stud or calibration pin:

In the Manual Operation mode, position the ball tip above the center
of the calibration pin

Select the calibration function: Press the CAL. R soft

key

Enter the diameter of the stud

Enter the safety clearance

New cal. spindle angle: Spindle angle that is used for

the calibration. The TNC uses CAL_ANG from the
touch probe table as a default value. If you change the
value, the TNC saves the value to the touch probe
table during calibration

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

Check the results (change the values if required)

Press the END soft key to terminate the calibrating

function

In order to be able to determine the ball-tip center offset,
the TNC needs to be specially prepared by the machine
manufacturer. The machine manual provides further
information.