Siemens SINUMERIK 840D sl Programming Manual page 689

Machine manufacturer
Please refer to the machine manufacturer's instructions. The interpolation of the LEAD and
TILT angles can be set differently using machine data.
Syntax
Rotation of tool orientation and tool
The type of tool orientation relative to the path is activated using ORIPATH or ORIPATHS.
N... ORIPATH
N... ORIPATHS
Activating the three angles that can be rotated:
N... LEAD=
N... TILT=
N... THETA=
The values of the angles at the end of block are programmed using LEAD=value,
TILT=value or THETA=value. In addition to the constant angles, polynomials can be
programmed for all three angles up to the 5th degree.
N... PO[PHI]=(a2, a3, a4, a5)
N... PO[PSI]=(b2, b3, b4, b5)
N... PO[THT]=(d2, d3, d4, d5)
The higher polynomial coefficients, which are zero, can be omitted when programming.
Example: PO[PHI]=a2 results in a parabola for the LEAD angle.
Meaning
Tool orientation relative to the path
ORIPATH:
ORIPATHS
:
LEAD:
TILT:
THETA:
PO[PHI]:
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Tool orientation in relation to path
Tool orientation in relation to path, blips in the orientation characteristic are smoothed
Angle relative to the surface normal vector in the plane that is defined by the path tangent
and the surface normal vector
Rotation of orientation in the Z direction or rotation about the path tangent
Rotation about the tool direction toward Z
Orientation polynomial for the LEAD angle
Activate type of orientation relative to the path
Activate type of orientation relative to the path with
smoothing of the orientation characteristic
Angle for the programmed orientation relative to the
surface normal vector
Angle for the programmed orientation in the plane,
vertical to the path tangent relative to the surface
normal vector
Angle of rotation relative to the change of orienta‐
tion in the tool direction of the third rotary axis
Polynomial for the leading angle LEAD
Polynomial for the tilt angle TILT
Polynomial for the angle of rotation THE‐
TA
Work preparation
3.9 Transformations
689