HEIDENHAIN TNC 370 User Manual page 290

9 3D Touch Probes
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9.6 Measuring Tools with the lT 120 Touch Probe
4
MP6507=1:
The measuring tolerance depends on the size of the tool
radius. This prevents the probe feed rate from being
decreased to zero when a tool with a large radius is being
measured. The TNC adjusts the measuring tolerance as
4
follows:
Tooi radius Messurlng taler8knce
Up to 30 mm MP6510
30 to 60 mm
2 . MP6510
60 to 90 mm 3
l
MP6510
90to120mm 4
l
MP6510
MP6507=2: The probe feed rate remains constant while the error of
measurement is increased linearly with the size of the tool
radius:
Measuring tolerance = r
l
5yL6P6; '
where r= Tool radius [mm]
MP6510 = Maximum permissible error of measurement
Displaying the results of tool measurement
In the program run modes of operation, you can select the TEXT / TOOL
PROBE STATUS screen layout. The TNC then displays the program text
in the left and the measuring results in the right screen window (see page
I-4). The measuring results that exceed the permissible wear tolerance
are marked with an asterisk (*I, and those that exceed the permissible
breakage tolerance are identified with the letter B.
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TNC 370