Setting a center line as datum, Um" ("setting a center, Datum setting with 3-d touch probe 15.9 – HEIDENHAIN TNC 640 (34059x-04) ISO programming User Manual

Page 503

Datum Setting with 3-D Touch Probe

15.9

TNC 640 | User's Manual for DIN/ISO Programming | 3/2014

503

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
Probing: 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

cycles in the preset table", page 489)
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

table", page 489.
Exit the probing function: Press the

END key

After you have measured the second touch point,

you can use the evaluation menu to change the

direction of the centerline. You can choose by soft

key whether the datum or zero point should be set

in the reference axis, minor axis or tool axis. This can

be necessary if, for example, you would like to save

the measured position in the reference and minor

axis.