Please Note While Programming; Cycle Parameters - HEIDENHAIN TNC 620 User Manual

18
Touch Probe Cycles: Automatic Tool Measurement
18.3 Calibrating the wireless TT 449 (Cycle 484, DIN/ISO: G484)

Please note while programming:

Danger of collision!
To avoid collisions, the tool must be pre-positioned
before the cycle call if Q536 is set to 1!
In the calibration process, the TNC also measures
the center misalignment of the calibrating tool by
rotating the spindle by 180° after the first half of the
calibration cycle.
The functioning of the calibration cycle is dependent
on machine parameter CfgToolMeasurement. Refer
to your machine manual.
The calibrating tool should have a diameter of
more than 15 mm and protrude approx. 50 mm
from the chuck. When using a cylinder pin of
these dimensions, the resulting deformation will
only be 0.1 µm per 1 N of probing force. The use
of a calibrating tool of too small a diameter and/
or protruding too far from the chuck may cause
significant inaccuracies.
Before calibrating the touch probe, you must enter
the exact length and radius of the calibrating tool into
the tool table TOOL.T.
The TT needs to be recalibrated if you change its
position on the table.

Cycle parameters

Stop before running Q536: Specify whether to stop before cycle
start or run the cycle automatically without stopping:
0: Stop before running. A dialog asks you to manually position
the tool above the tool touch probe. After moving the tool to the
approximate position above the tool touch probe, press NC start to
continue the calibration process or press the CANCEL soft key to
cancel the calibration process
1: No stop before running. The TNC starts the calibration process
from the current position. Before running Cycle 484, you must
position the tool above the tool touch probe.
484
NC blocks
6 TOOL CALL 1 Z
7 TCH PROBE 484 CALIBRATE TT
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 9/2015
Q536=+0 ;STOP BEFORE
RUNNING