HEIDENHAIN TNC 620 (73498x-02) ISO programming - Manual (Page 430)

Manual operation and setup
14.9 Datum Setting with 3-D Touch Probe (Touch Probe Function
Software Option)
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TNC 620 | User's Manual for DIN/ISO Programming | 5/2013
Setting the datum in the intersection of multiple holes:
Preposition the touch probe approximately in the
center of the hole
Hole is to be probed automatically: Define by soft
key
To probe the workpiece, press the machine
START button. The touch probe probes the circle
automatically.
Repeat the probing procedure for the remaining
elements
Terminate the probing procedure and switch to the
evaluation menu: Press the EVALUATE soft key
Datum: In the menu window, enter both
coordinates of the circle center, confirm with the
SET DATUM soft key, or write the values to a table
(See "Writing measured values from the touch
probe cycles in a datum table", page 415, or See
"Writing measured values from the touch probe
cycles in the preset table", page 416)
Terminate the probing function: Press the END
soft key
Setting a center line as datum
Select the probe function: Press the PROBING
soft key
Position the touch probe at a position near the first
touch point
Select the probing direction by soft key
Start the probing procedure: Press the NC Start
button
Position the touch probe at a position near the
second touch point
Start the probing procedure: Press the NC Start
button
Datum: Enter the coordinate of the datum in the
menu window, confirm with the SET DATUM soft
key, or write the value to a table (See "Writing
measured values from the touch probe cycles in a
datum table", page 415, or See "Writing measured
values from the touch probe cycles in the preset
table", page 416.
Terminate the probing function: Press the END key