Siemens sinumerik 840D sl Function Manual page 76

Detailed description
2.8 Orientation
Set orientation relative to the path
The following machine data is used to set in which way the orientation relative to the path is
to be interpolated.
MD21094 $MC_ORIPATH_MODE (setting for path relative orientation ORIPATH)
With ORIPATH the behavior of tool orientation interpolation relative to the path can be
activated for various functions:
Meaning of units
0: The tool orientation only has the reference to the path tangent and to the normal vector
programmed with LEAD and TILT at the end of the block, whereas, during the block, the
orientation does not follow the path tangent (previous behavior).
1: Reference of the tool orientation to the path tangent and to the surface normal vector
programmed with LEAD/TILT is maintained throughout the entire block.
Meaning of decades
0: LEAD = rotation about the direction perpendicular to the tangent and normal vector
(forward angle)
TILT = rotation of orientation around the normal vector
1: LEAD = rotation about the direction perpendicular to the tangent and normal vector
(forward angle)
TILT = rotation of orientation around the direction of path tangent (sideways angle)
Meaning of centuries
0: There is no retracting movement
There is a retracting movement in the tool coordinate system, i.e. the direction programmed
by the retracting vector is interpreted in a coordinate system, which is specified in the
following way:
1: Current tool direction (z coordinate) and orientation change (x coordinate)
2: Active plane (z coordinate is normal vector to the active plane) and orientation change (x
coordinate)
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activate proper orientation relative to the
path
Interpretation of the turning angle TILT
Retracting movement with re-orientation
Special functions: 3-Axis to 5-Axis Transformation (F2)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0