Interpretation Of The Programmed Rotary Axis Coordinates - HEIDENHAIN ITNC 530 User Manual

Interpretation of the programmed rotary axis
coordinates
Up to now, machines with 45° swivel heads or 45° tilting tables could
not easily set the angle of inclination or a tool orientation with respect
to the currently active coordinate system (spatial angle). This function
could only be realized through specially written programs with normal
vectors (LN blocks).
The TNC now provides the following function:
AXIS POS determines that the TNC interprets the
programmed coordinates of rotary axes as the
nominal position of the respective axis.
AXIS SPAT determines that the TNC interprets the
programmed coordinates of rotary axes as the spatial
angle.
AXIS POS should only be used if your machine is equipped
with equipped with Cartesian rotary axes. With 45° swivel
heads/tilting tables, AXIS POS may also result in incorrect
axis positions.
AXIS SPAT: The rotary axis coordinates entered in the
positioning block are spatial angles that are given with
respect to the currently active (perhaps tilted) coordinate
system (incremental spatial angle).
After you switch on FUNCTION TCPM with AXIS SPAT, in the
first positioning block you should always program all three
spatial angles in the inclination angle definition. This also
applies if one or more spatial angles are 0°.
Example NC blocks:
...
13 FUNCTION TCPM F TCP AXIS POS ...
...
18 FUNCTION TCPM F TCP AXIS SPAT ...
20 L A+0 B+45 C+0 F MAX
...
508
Rotary axis coordinates are axis angle
Rotary axis coordinates are spatial angle
Set tool orientation to B+45 degrees (spatial angle).
Define spatial angle A and C with 0.
9 Programming: Special Functions