HEIDENHAIN TNC 320 (340 551-01) - Manual (Page 430)

430 13 Touch Probe Cycles in the Manual and Electronic Handwheel Modes
13.7 A
u
to
matic W
o
rk
piece Measur
ement
13.7 Automatic Workpiece
Measurement
Overview
The TNC offers three cycles for measuring workpieces and setting the
datum automatically. To define the cycles, press the TOUCH PROBE
key in the Programming and Editing or Positioning with MDI operating
mode.
Reference system for measurement results
The TNC transfers all the measurement results to the result
parameters and the protocol file in the active coordinate system, or as
the case may be, the displaced coordinate system.
DATUM PLANE touch probe cycle 0
1 The touch probe moves at rapid traverse to the starting position 1
programmed in the cycle.
2 Then the touch probe approaches the workpiece at the assigned
feed rate. The probing direction is to be defined in the cycle.
3 After the TNC has saved the position, the probe retracts to the
starting point and saves the measured coordinate in a
Q parameter. The TNC also stores the coordinates of the touch
probe position at the time of the triggering signal in the parameters
Q115 to Q119. For the values in these parameters the TNC does
not account for the stylus length and radius.
Cycle Soft key
0 REFERENCE PLANE Measuring a coordinate in a
selectable axis
1 POLAR DATUM PLANE Measuring a point in a
probing direction
3 MEASURE Measuring the position and diameter of a
hole
1
Before programming, note the following:
Pre-position the touch probe in order to avoid a collision
when the programmed pre-positioning point is
approached.