Siemens SINUMERIK 828D Programming Manual page 329

Programming the tool orientation with LEAD= and TILT=
The resultant tool orientation is determined from:
● Path tangent
● Surface normal vector
● Lead angle
● Tilt angle
Behavior at inside corners (for 3D-tool compensation)
If the block is shortened at an inside corner, the resulting tool orientation is also achieved at
the end of the block.
Definition of tool orientation with LEAD= and TILT=
Job planning
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
at the start of the block
LEAD
in the plane defined by the path tangent and surface normal vector
at the end of the block
TILT
vertical to the path tangent and relative to the surface normal vector
6.2 Three, four and five axis transformation (TRAORI)
and at the end of the block
A4, B4, C4
Transformations
A5, B6, C5
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