HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 618)

Touch Probe Cycles: Automatic Tool Measurement
19.2 Calibrate the TT (Cycle 30 or 480, DIN/ISO: G480 Touch Probe
Functions software option 17)
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TNC 640 | User's Manual Cycle Programming | 1/2015
19.2 Calibrate the TT (Cycle 30 or
480, DIN/ISO: G480 Touch Probe
Functions software 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 613). The calibration process is automatic.
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
measurements.
Please note while programming:
The functioning of the calibration cycle is dependent
on machine parameter
CfgToolMeasurement. Refer
to your machine tool manual.
Before calibrating the touch probe, you must enter
the exact length and radius of the calibrating tool into
the tool table TOOL.T.
The position of the TT within the machine working
space must be defined by setting the Machine
Parameters
centerPos > [0] to [2].
If you change the setting of any of the Machine
Parameters
centerPos > [0] to [2], you must
recalibrate.
Cycle parameters
Clearance height: Enter the position in the spindle
axis at which there is no danger of collision with
the workpiece or fixtures. The clearance height is
referenced to the active workpiece datum. If you
enter such a small clearance height that the tool
tip would lie below the level of the probe contact,
the TNC automatically positions the tool above
the level of the probe contact (safety zone from
safetyDistStylus). Input range -99999.9999 to
99999.9999
NC blocks in old format
6 TOOL CALL 1 Z
7 TCH PROBE 30.0 CALIBRATE TT
8 TCH PROBE 30.1 HEIGHT: +90
NC blocks in new format
6 TOOL CALL 1 Z
7 TCH PROBE 480 CALIBRATE TT
Q260=+100 ;CLEARANCE HEIGHT