Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual download pdf (Page 153)

HEIDENHAIN TNC 320 153

4.2 Available Cycles

Calibrating the TT (touch probe cycle 30 or 480,

DIN/ISO: G480)

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 152). 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.

8 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).

The method of function of the calibration cycle is

determined by the machine manufacturer. 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

centerPos > [0] to [2].

If you change the setting of any of the Machine

Parameters centerPos > [0] to [2], you must recalibrate.

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

1 2 ... 148 149 150 151 152 153 154 155 156 157 158 ... 164 165

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Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual Page 153