Siemens SINUMERIK 840D sl Function Manual page 119

● The opening angle of the cone is programmed degrees with the identifier (nutation angle).
The value range of this angle is limited to the interval between 0 degrees and 180 degrees.
The values 0 degrees and 180 degrees must not be programmed. If an angle is
programmed outside the valid interval, an alarm is generated.
In the special case where NUT = 90 degrees, the orientation vector in the plane is
interpolated perpendicular to the direction vector (large circle interpolation).
The sign of the programmed opening angle specifies whether the traversing angle is to be
greater or less than 180 degrees.
In order to define the cone, the direction vector or its opening angle must be programmed.
Both may not be specified at the same time.
● A further option is to program an intermediate orientation that lies between the start and
end orientation.
Programming
ORIPLANE
ORICONCW
ORICONCCW
Programming of the direction vector is carried out using the identifiers A6, B6, C6 and is
specified as a (normalized) vector.
Note
Programming of an end orientation is not absolutely necessary. If no end orientation is
specified, a full outside cone with 360 degrees is interpolated.
The opening angle of the taper is programmed with NUT= <angle>, where the angle is specified
in degrees.
Note
An end orientation must be specified. A complete outside cone with 360 degrees cannot be
interpolated in this way. The sign of the opening angle defines whether the traversing angle is
to be greater or less than 180 degrees.
The identifiers have the following meanings:
NUT = +...
NUT = -...
A positive sign can be omitted when programming.
Special functions
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
orientation interpolation in a plane: Interpolation in a plane
(large circle interpolation)
orientation interpolation on a cone clockwise: Interpolation on
the peripheral surface of a cone in the clockwise direction
orientation interpolation on a cone counter clockwise: Interpo‐
lation on the peripheral surface of a cone in the counter-clock‐
wise direction.
Traverse angle smaller than or equal to 180 degrees
Traverse angle greater than or equal to 180 degrees
F2: Multi-axis transformations
2.11 Orientation vectors
119