Calibrating The Tt (Cycle 30 Or 480, Din/Iso: G480 Option 17); Cycle Run - HEIDENHAIN TNC 620 User Manual

18
Touch Probe Cycles: Automatic Tool Measurement | Calibrating the TT (Cycle 30 or 480, DIN/ISO: G480
18.2 Calibrating the TT (Cycle 30 or 480, DIN/
ISO: G480 option 17)

Cycle run

The TT is calibrated with the measuring cycle TCH PROBE 30
or TCH PROBE 480. (see "Differences between Cycles 31 to 33
and Cycles 481 to 483", Page 523). The calibration process runs
automatically. The TNC also measures the center misalignment of
the calibrating tool automatically by rotating the spindle by 180°
after the first half of the calibration cycle.
The calibrating tool must be a precisely cylindrical part, for example
a cylinder pin. The resulting calibration values are stored in the
TNC memory and are accounted for during subsequent tool
measurement.
Calibration process:
1 Clamp the calibrating tool. The calibrating tool must be a
precisely cylindrical part, for example a cylinder pin
2 Manually position the calibrating tool in the working plane via
the center of the TT
3 Position the calibrating tool in the tool axis approx. 15 mm +
safety clearance above the TT
4 The TNC first moves along the tool axis. The tool is first moved
to a clearance height of 15 mm + safety clearance
5 The calibration process along the tool axis starts
6 Calibration then follows in the working plane
7 The TNC initially positions the calibrating tool in the working
plane at a value of 11 mm + radius of TT + safety clearance
8 Then the TNC moves the tool downwards along the tool axis
and the calibration process starts
9 During the probing the TNC performs a square movement
pattern
10 The TNC saves the calibration values and considers these during
subsequent tool measurement
11 The TNC then retracts the stylus along the tool axis to safety
clearance and moves it to the center of the TT
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HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
option 17)