HEIDENHAIN TNC 407 (280 580) User Manual User Manual
Page 283
TNC 425/TNC 415 B/TNC 407
9-16
9
3D Touch Probes
Fig. 9.16
:
Second soft key row to TOUCH PROBE
Touch Probe Cycles in the MANUAL and ELECTRONIC HANDWHEEL Operating Modes
Setting datum points over holes
A second soft-key row provides soft keys for using
holes to set datums.
The touch probe is used in the same way as in the
function "circle center as datum – inside circle" (see
page 9-14). You pre-position it in the approximate
center of a hole, then press the machine START
button to automatically probe four points in the
hole.
Move the touch probe to the next hole and have
the TNC repeat the probing procedure until all the
holes have been probed to set datums.
Function
Soft key
• Basic rotation from 2 holes:
The TNC measures the angle between the line
connecting the centers of two holes and a
nominal angular position (angle reference axis).
• Datum from 4 holes:
The TNC calculates the intersection of the line
connecting the first two probed holes with the
line connecting the last two probed holes. If
a basic rotation was already made from the
first two holes, these holes need not be probed
again.
• Circle center from 3 holes:
The TNC calculates a circle that intersects the
centers of all three holes and finds the center.