Smoothing The Orientation Characteristic (Orison, Orisof) - Siemens SINUMERIK 828D Manual

3.7
Important functions for 3- to 5-axis machining
3.7.6 Smoothing the orientation characteristic (ORISON,
ORISOF)
The ORISON function can be used to smooth fluctuating orientation across several blocks. The
aim is to achieve a smooth characteristic for the orientation and therefore a more harmonious
movement of the axes.
For 5-axis programs generated by CAD/CAM systems in which the milling paths and direction
vectors are specified for the tool, the programs often contain inharmonic changes of the tool
orientation which cause sudden movements of the rotary axes and therefore, because of the
compensatory movements, also of the linear axes. Even if these deviations are only minimal,
they will lead to compensatory movements in the linear axes, which will manifest themselves in
slowed movements or even stopping in the path. The consequences are visible traces on the
workpiece surface and longer machining time.
With ORISON, the orientation is smoothed irrespective of the contour because the movement of
the rotary axes and the linear axes is much more harmonious. This results in higher machining
velocities and shorter machining times.
Up to SW 4.5, ORISON orientation smoothing is not part of CYCLE832 and it must therefore be
programmed separately with the desired vector smoothing in the NC program in the case of a 5-
axis program with orientation interpolation. If the ORISON function is to be activated
automatically with active 5-axis transformation, then this setting can be made in CUST_832 by
the OEM. Depending on the orientation tolerance, the NC command ORISON is activated in the
manufacturer cycle CUST_832 and is then also available as multi-axis program parameter
with ORI tolerance in CYCLE832.
ORISOF smoothing off ORISON smoothing on
ORISON is deactivated automatically when using Top Surface (COMPSURF). Therefore,
after CYCLE832 with Top Surface do not program ORISON.
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