Calibrating The Tt - HEIDENHAIN ITNC 530 - CYCLE PROGRAMMING User Manual

19.2 Calibrating the TT (Cycle 30 or
480, DIN/ISO: G480)
Cycle run
The TT is calibrated with the measuring cycle TCH PROBE 30 or TCH
PROBE 480 (see also "Differences between Cycles 31 to 33 and
Cycles 481 to 483" on page 495). 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 measurement.
The calibration tool should have a diameter of more than
15 mm and protrude approx. 50 mm from the chuck. This
constellation causes a deformation of 0.1 µm per 1 N
probing force.
Please note while programming:
The functioning of the calibration cycle is dependent on
MP 6500. Refer to your Machine 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
6580.0 to 6580.2.
If you change the setting of any of the Machine
Parameters 6580.0 to 6580.2, you must recalibrate the TT.
Cycle parameters
U 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 calibration tool above
the level of the probe contact (safety zone from
MP6540). Input range -99999.9999 to 99999.9999,
alternatively PREDEF
HEIDENHAIN iTNC 530
Example: NC blocks in old format
6 TOOL CALL 1 Z
7 TCH PROBE 30.0 CALIBRATE TT
8 TCH PROBE 30.1 HEIGHT: +90
Example: NC blocks in new format
6 TOOL CALL 1 Z
7 TCH PROBE 480 CALIBRATE TT
Q260=+100 ;CLEARANCE HEIGHT
499