HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 314)

HEIDENHAIN TNC 410, TNC 426, TNC 430 299
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12.1 T
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P
robe Cy
cles in the Manual and Electr
onic Handwheel
Calibrating the effective radius and compensating center
misalignment
After the touch probe is inserted it normally needs to be exactly
aligned with the spindle axis. The misalignment is measured with
this calibration function and compensated electronically.
For this operation the TNC rotates the 3-D touch probe by 180°. The
rotation is initiated by a miscellaneous function that is set by the
machine tool builder in the machine parameter 6160.
The center misalignment is measured after the effective ball tip
radius is calibrated.
ú In the Manual Operation mode, position the ball tip in the bore of
the ring gauge.
ú To select the calibration function for the ball-tip radius
and the touch probe center misalignment, press the
CAL R soft key.
ú Select the tool axis and enter the radius of the ring
gauge.
ú To probe the workpiece, press the machine START
button four times. The touch probe contacts a position
on the bore in each axis direction and calculates the
effective ball-tip radius.
ú If you want to terminate the calibration function at this
point, press the END soft key.
ú If you want to determine the ball-tip center
misalignment, press the 180° soft key. The TNC
rotates the touch probe by 180°.
ú To probe the workpiece, press the machine START
button four times. The touch probe contacts a position
on the bore in each axis direction and calculates the
ball-tip center misalignment.
Okap12.pm6 29.06.2006, 08:06 299