Monitoring Of Path Curvature; Selection/Deselection Of 3D Trc; Selection Of 3D Trc - Siemens sinumerik 840D sl Function Manual

2.2.7

Monitoring of path curvature

The path curvature is not monitored, i.e. the system does not usually detect any attempt to
machine a concave surface that is curved to such a degree that the tool currently in use is
not capable of performing the machining operation. A possible exception are blocks that are
split owing to a singularity. The transition between the two partial blocks created after the
split is then treated like an inside corner. Except for such special cases, the user is
responsible for ensuring that only tools that can machine along the entire contour without
violating it are used.
2.3

Selection/deselection of 3D TRC

The following commands are used to select/deselect 3D tool radius compensation for
circumferential milling or face milling:
• CUT3DC (circumferential milling)
• CUT3DFS (face milling)
• CUT3DFF (face milling)
• CUT3DF (face milling)
2.3.1

Selection of 3D TRC

CUT3DC
3D radius compensation for circumferential milling (only when 5-axis transformation is
active).
CUT3DFS
3D tool offset for face milling with constant orientation. The tool orientation is determined by
G17 - G19 and is not influenced by frames.
CUT3DFF
3D tool offset for face milling with constant orientation. The tool orientation is the direction
defined by G17 - G19 and, in some case, rotated by a frame.
CUT3DF
This programming command selects the 3D tool offset for face milling with change in
orientation (only when 5-axis transformation is active).
Special functions: 3D Tool Radius Compensation (W5)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Detailed description
2.3 Selection/deselection of 3D TRC
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