Cut3Dc/Cut3Dcd Circumferential Milling - Siemens SINUMERIK 828D Manual

Important functions for 3- to 5-axis machining

3.8.2 CUT3DC/CUT3DCD circumferential milling

In circumferential milling, the direction of compensation is always perpendicular to the plane on
which the cutter is moving. This is always defined by the current path tangent and the tool vector
and normally changes in each interpolation increment. It is defined with CUT3DC/CUT3DCD and
activated with G41/G42 (left/right).
The properties of the compensations for circumferential milling are compared in the table.
CUT3DC
(SINUMERIK 840D sl and powerline)
Calculation of the tool compensation in the
control/CNC
Supplementary conditions
Can be used only to a limited extent
Can be used only to a limited extent with
compressor:
COMPCAD - Advanced Surface
COMPSURF - Top Surface
We recommend the use of the CUT3DCD function for circumferential milling.
Programming circumferential milling with CUT3DCD
3D TRC for circumferential milling referred to a differential tool is activated via the CUT3DCD
command. It should be applied if the programmed contour refers to the center-point path of a
differential tool, and a tool other than a differential tool is used for machining.
When calculating the 3D tool radius compensation, only the wear value of the radius of the
active tool ($TC_DP15,$TC_DP16) and any programmed tool compensation offsets OFFN
and TOFFR/TOFFL are taken into account. The basic radius ($TC_DP6) of the active tool is
not taken into account. Additional information, basic length = $TC_DP3.
CUT3DCD can be used with various types of
Direction vector
CUT3DCD G41 G01 X145.983 Y99.000 Z-20.876
Round axis values
CUT3DCD G41 G01 X145.983 Y99.000 Z-20.876
The CUT3DCD 3D radius compensation is restricted to cylindrical tools.
© Siemens AG All rights reserved SINUMERIK, Manual, Mold-Making with 3- to 5-Axis Simultaneous Milling
CUT3DCD
(SINUMERIK 840D sl as of V4.7 SP3 HF1)
Calculation of the tool compensation /
standard tool in CAD/CAM and calculation
of the difference by entering the wear in the
control/CNC.
Supplementary conditions
Can be used with compressor:
COMPCAD - Advanced Surface
COMPSURF - Top Surface
The tools should have maximum 5-10%
negative wear of the standard tool.
tool orientation (TRAORI active!)
A3=0.5 B3=0 C3=1
B-26.56 C0
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