HEIDENHAIN TNC 370 - 9.4 Digitizing with a Triggering 3 D Touch Probe (Optional)

9 3D Touch Probes
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9.4 Digitizing with a Triggering 3D Touch Probe (Optional)
The digitizing option enables you to reduce a three dimensional part
model into discrete digital information by scanning it with a triggering 3D
touch probe.
The following components are required for digitizing:
l Triggering 3D touch probe
l The “Digitizing option” software module in the TNC
l External data storage, such as:
The HEIDENHAIN FE 401 floppy disk unit
or
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PC (IBM or compatible) with HEIDENHAIN TNC.EXE data transfer
software
The surface data resulting from digitizing can be evaluated with the
l SUSA evaluation software from HEIDENHAIN for IBM-compatible PCs.
* The TNC and the machine ~QQI must be prepared by the machine tool builder for the use of a triggering 3D
touch probe.
Principle
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The touch probe scans a 3D surface point for point in a selectable grid.
The scanning speeds vary from 200 to 600 mm/min.
The TNC transmits the digitized positions as straight-line blocks in
HEIDENHAIN format. The MOD function (see page 1 I-5) determines
where the blocks are stored.
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Generating programs with digitized data
The TNC automatically converts the digitized data into an NC part
program. Such a program can be run without further processing, provid-
ed that the cutter has the same radius as the probe stylus tip.
The HEIDENHAIN evaluation software SUSA calculates male/female
transformations and tool paths for tool radii and tool shapes that differ
from the shape of the probe stylus tip.
\ Digitizing cycles
The following digitizing cycles are available:
l TCH PROBE 5 RANGE
For fixing the scanning range
. TCH PROBE 6 MEANDER
For digitizing line by line
l TCH PROBE 7 CONTOUR LINES For digitizing level by level
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Transferring digitized data
The digitized data are stored in a file which you name in Cycle 5: RANGE.
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* The digitizing cycles operate in HEIDENHAIN conversational dialog.
* Digitizing cycfes are programmed only for the main axes X, Y and 2.
l Coordinate transformations or a basic r&Won must not be active during digitizing.
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TNC 370
9-21