Path Traversing Behavior - Siemens Sinumerik 840D sl Programming Manual

Path traversing behavior

8.1 Tangential control (TANG, TANGON, TANGOF, TLIFT, TANGDEL)
Application
Tangential control can e.g. be used in the applications:
• Tangential positioning of a rotatable tool during nibbling
• Tracking the workpiece alignment for a bandsaw (see the following diagram).
• Positioning of a dressing tool on a grinding wheel
• Positioning of a cutting wheel for glass or paper working
• Tangential feed of a wire for 5-axis welding.
Syntax
Defining tangential tracking:
TANG(<Faxis>,<Laxis1>,<Laxis2>,<coupling factor>,<KS>,<Opt>)
Activating tangential control:
TANGON(<Faxis>,<angle>,<Dist>,<angular tolerance>)
Deactivating tangential control:
TANGOF (<Faxis>)
Activating the "Insert intermediate block at contour corners" function:
TLIFT(<Faxis>)
The TLIFT operation is specified after the axis assignment with TANG(...).
Deactivating the "Inserting intermediate block at contour corners" function:
Repeat the TANG(...) operation without a following TLIFT(<Faxis>).
Deleting definition of tangential tracking:
TANGDEL(<Faxis>)
An existing user-defined tangential tracking must be deleted if a new tangential tracking with
the same following axis is defined in the preparation call TANG. Deletion is only possible if the
coupling with TANGOF(<Faxis>) is deactivated.
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Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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