HEIDENHAIN TNC 640 (34059x-01) - Manual (Page 461)

HEIDENHAIN TNC 640 461
14.7 Compensating W
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piece Misalignment with a 3-D T
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obe
14.7 Compensating Workpiece
Misalignment with a 3-D Touch
Probe
Introduction
The TNC electronically compensates workpiece misalignment by
computing a "basic rotation."
For this purpose, the TNC sets the rotation angle to the desired angle
with respect to the reference axis in the working plane. See figure at
right.
The TNC saves the basic rotation, depending on the tool axis, in the
columns SPA, SPB or SPC of the preset table.
X
Y
PA
X
Y
A B
HEIDENHAIN only gives warranty for the function of the
probing cycles if HEIDENHAIN touch probes are used.
If you use probing functions in a tilted working plane, you
must set 3-D ROT to Active for the Manual Operation and
Automatic operating modes.
Select the probe direction perpendicular to the angle
reference axis when measuring workpiece misalignment.
To ensure that the basic rotation is calculated correctly
during program run, program both coordinates of the
working plane in the first positioning block.
You can also use a basic rotation in conjunction with the
PLANE function. In this case, first activate the basic
rotation and then the PLANE function.