HEIDENHAIN TNC 426B (280 472) Touch Probe Cycles - Manual (Page 135)

HEIDENHAIN TNC 426, TNC 430 123
5.1 Digitizing with T
rigg
e
ri
ng or Measur
ing T
ouc
h Pr
obe (Option)
Function
The touch probe scans a 3-D surface point for point in a selectable grid.
The scanning speeds for triggering touch probes vary from 200 to 800
mm/min with a probe point interval (PP.INT) of 1 mm. The scanning
speeds for measuring touch probes are programmed in the scanning
cycle. You can enter up to 3000 mm/min.
The TNC saves the digitized positions directly to the hard disk. The
interface function PRINT determines in which directory the data are
stored.
If you want to mill the digitized data subsequently using a tool whose
radius equals the radius of the ball tip, you can machine the digitized
data directly from the file with Cycle 30 (see User's Manual, section
8.8 “Cycles for Multipass Milling”).
The touch probe must be calibrated before digitizing.
If you are working alternately with a triggering and a
measuring touch probe, ensure that
n You have selected the correct touch probe in MP 6200.
n The measuring and triggering touch probes are never
connected to the control at the same time.
The TNC cannot detect which probe is actually in the
spindle.
Digitizing cycles are programmed only for the main axes X,
Y and Z and for the rotary axes A, B and C.
Coordinate transformations or a basic rotation must not be
active during digitizing.
The TNC also transfers the BLK FORM to the digitizing data
file. For this purpose, the TNC enlarges the workpiece
blank defined in the RANGE cycle by twice the value set in
MP6310 (for measuring touch probes).