Siemens SINUMERIK 828D Programming Manual page 422

Tool offsets
7.5 Activate 3D tool offsets (CUT3DC..., CUT3DF...)
3D radius compensation with CUT3DCC, contour on the machining surface
If
CUT3DCC
cylindrical milling tool having the same diameter. The resulting path reference point is shown
in the following diagram for a torus milling tool.
The angle between the machining and limitation surfaces may change from an acute to an
obtuse angle and vice versa even within the same block.
The tool actually being used may either be larger or smaller than the standard tool. However,
the resulting corner radius must not be negative and the sign of the resulting tool radius must
be kept.
For
conventional tool radius compensation, the total tool radius is used that comprises the sum
of:
● Tool radius (tool parameter
● Wear value (tool parameter
● and a tool offset
The position of the limitation surface is determined from the difference between these two
values:
● Dimensions of the standard tool
● Tool radius (tool parameter
422
is active with a torus milling tool, the programmed path refers to a fictitious
, the NC part program refers to contour on the machining surface. As for
CUT3DCC
programmed to calculate the perpendicular offset to the limitation
OFFN
surface.
)
$TC_DP6
)
$TC_DP15
)
$TC_DP6
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
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