© Siemens AG All rights reserved. SINUMERIK, Manual, 5-axis machining
Basic information
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SINUMERIK controls offer various functions so that remachining can be avoided:
Compressor function (COMPCAD)
At the block transitions, the linear interpolation
leads to step changes in velocity in the
machine axes, which in turn can cause reso-
nance in the machine elements and can ulti-
mately be detected as a beveled pattern or
as the effects of vibrations on the work-
piece surface.
In accordance with the specified tolerance
band, the compressor takes a sequence of
G1 commands, combines them and com-
presses them into a spline , which can be
directly executed by the control.
The compressor generates smooth paths and
paths with constant curvature. The constant
curvature results in a steady velocity and
acceleration characteristic, meaning that the
machine can run at higher speeds, thereby
increasing productivity.
Programmable smoothing
Discontinuous block transitions can be
smoothed with the smoothing function to cre-
ate steady characteristics. This involves
inserting geometrical elements at the cor-
ners (block transitions).
The tolerance of these geometrical elements
can be adjusted.
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