Advanced Surface And Top Surface - Siemens SINUMERIK 828D Manual

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Important functions for 3- to 5-axis machining
3.7

Advanced Surface and Top Surface

SINUMERIK bundles a range of special mold-making functions under Advanced Surface and
Top Surface. This intelligent motion control achieves optimum workpiece surfaces while at the
same time providing maximum machining velocity. Advanced Surface or Top Surface are
activated automatically when you work with CYCLE832.
When the new motion control is used, an optimized Look Ahead function contributes to perfect
surface quality through reproducible results in adjacent milling paths, accuracy and increased
velocity. The compressor ensures precise contour accuracy and maximum machining velocity.
Intelligent jerk limitation reduces the stress on the machines mechanical system and allows soft
acceleration and braking of the axes, therefore extending the machine service life.
One important advance is the automatic harmonization of the velocity profiles on adjacent milling
paths by means of CNC. It also works for the forward/backward line-by-line milling of contours
and free-form surfaces and it directly leads to increased surface quality.
Top Surface is based on the COMPSURF compressor. This has been improved for machining
demanding CAD/CAM programs.
Without With
Advanced Surface Advanced Surface
Top Surface Top Surface
© Siemens AG All rights reserved SINUMERIK, Manual, Mold-Making with 3- to 5-Axis Simultaneous Milling
Increased machining velocity due to an
improved velocity profile. The red areas show
the maximum velocity.
Perfect surface quality thanks to reproducible
results in adjacent milling paths. The surface
is much more homogeneous.
The compressor does not only work via G1
blocks. It also compresses rapid traverse
movements G0 using smoothing. The velocity
remains at a constant high level during the
entire machining process (red areas).