Workpiece setup 1.6 – HEIDENHAIN TNC 128 (77184x-02) User Manual

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Workpiece setup

1.6

TNC 128 | User's Manual HEIDENHAIN Conversational Programming | 5/2014

Datum setting with 3-D touch probe
(software option 17: Touch Probe Functions)

Insert a 3-D touch probe: In the

Positioning with Manual Data

Input mode, run a TOOL CALL block containing the tool axis and
then return to the

Manual Operation mode

Select the probing functions: The TNC displays the
available functions in the soft-key row

Select the function for setting the datum, e.g.
PROBE POSITION
Position the touch probe near the first touch point
on the first workpiece edge

Select the probing direction via soft key

Press NC start: The touch probe moves in the
defined direction until it contacts the workpiece
and then automatically returns to its starting point

Then the TNC displays the coordinates of the
measured position

To set to 0: Press the

SET DATUM soft key

Press the

END soft key to close the menu

Repeat this procedure for all axes, in which you want to set the
datum

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