HEIDENHAIN TNC 410 - Manual (Page 269)

12 3-D Touch Probes 256
To measure the angle between two workpiece sides:
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 for the first side (see “Compensating
workpiece misalignment”).
ú Probe the second side as for a basic rotation, but do not set the
Rotation angle to zero!
ú Press the PROBING ROT soft key to display the angle PA between
the two sides as the Rotation angle.
ú Cancel the basic rotation, or restore the previous basic rotation by
setting the Rotation angle to the value that you wrote down
previously.
Measuring with the 3-D touch probe
during program run
The 3-D touch probe can measure positions on the workpiece while
the program is being run — even if the working plane is tilted.
Applications:
■ Measuring differences in the height of cast surfaces
■ Tolerance checking during machining
To program the use of a touch probe, press the TOUCH PROBE key
and REF PLANE soft key in the Programming and Editing mode of
operation. The TNC pre-positions the touch probe to automatically
probe the desired position. During probing, the TNC moves the
touch probe parallel to the machine axis that was defined in the
touch probe cycle. The TNC takes an active basic rotation or rotation
only into account for calculating the touch point. The coordinate of
the touch point is stored in a Q parameter. The TNC interrupts the
probing process if the stylus is not deflected within a certain
distance (selectable via MP 6130). Upon contact, the position
coordinates of the south pole of the probe tip are also stored in the
parameters Q115 to Q118. The values in these parameters do not
include the stylus length and radius.
12.3 Measur
ing W
o
rkpieces with a 3-D
Touc
h
P
robe
PA
–10
100
α ?
α ?
L?
X
Z
Y
100