HEIDENHAIN TNC 410 - Manual (Page 268)

255 HEIDENHAIN TNC 410
ú Position the touch probe at a starting position near the
second touch point B.
ú Select the probe direction with the arrow keys: Same
axis but opposite direction as for A.
ú To probe the workpiece, press the machine START
button.
The value displayed as DATUM is the distance between the two
points on the coordinate axis.
To return to the datum that was active before the
length measurement:
ú Select the touch probe function: Press the PROBING POS soft key
ú Probe the first touch point again.
ú Set the Datum to the value that you wrote down previously.
ú To terminate the dialog, press the END key.
Measuring angles
You can use the 3-D touch probe to measure angles in the working
plane. You can measure
■ the angle between the angle reference axis and a workpiece
side, or
■ the angle between two sides.
The measured angle is displayed as a value of maximum 90°.
To find the angle between the angle reference axis and
a side of the workpiece:
ú Select the touch probe function: Press the PROBING
ROT soft key
ú Rotation angle: If you will need the current basic
rotation later, write down the value that appears under
Rotation angle.
ú Make a basic rotation with the side of the workpiece
(see “Compensating workpiece misalignment”).
ú Press the PROBING ROT soft key to display the angle
between the angle reference axis and the side of the
workpiece as the rotation angle.
ú Cancel the basic rotation, or restore the previous basic
rotation:
ú This is done by setting the Rotation angle to the value
that you wrote down previously.
12.3 Measur
ing W
o
rkpieces with a 3-D
Touc
h
P
robe