Smoothing Of Orientation Characteristic (Oripaths A8=, B8=, C8=) - Siemens SINUMERIK 840D sl Programming Manual

Work preparation
3.9 Transformations
A7= B7= C7=:
ORICURVE
XH YH ZH, e.g. with
polynomials
PO[XH]=(xe, x2, x3,
x4, x5)
Note
If the tool orientation with active ORIAXES is interpolated via the orientation axes, the angle of
rotation is only initiated relative to the path at the end of block.
3.9.5.4

Smoothing of orientation characteristic (ORIPATHS A8=, B8=, C8=)

Changes of orientation that take place with constant acceleration on the contour can cause
unwanted interruptions to the path motions, particularly at the corner of a contour. The resulting
blip in the orientation characteristic can be smoothed by inserting a separate intermediate
block. If ORIPATHS is active during reorientation, the change in orientation occurs at a
constant acceleration. The tool can be retracted in this phase.
Machine manufacturer
Please refer to the machine manufacturer's notes on any predefined machine and setting data
used to activate this function.
Machine data can be used to set how the retracting vector is interpreted:
1. In the TCS, the Z coordinate is defined by the tool direction.
2. In the WCS, the Z coordinate is defined by the active plane.
Additional information about function "Orientation relative to the path", see Function Manual
Transformations.
Syntax
Further programming details are needed at the corner of the contour for constant tool
orientations relative to the path as a whole. The direction and path length of this motion is
programmed via the vector with components A8 = X, B8 = Y, C8 = Z:
N... ORIPATHS A8=X B8=Y C8=Z
Meaning
ORIPATHS:
A8= B8= C8=:
X, Y, Z:
692
Intermediate orientation (programming as normalized vector)
Interpolation of the orientation specifying a movement between two con‐
tact points of the tool. In addition to the end points, additional curve
polynomials can also be programmed.
Tool orientation relative to the path; blip in orientation characteristic is
smoothed
Vector components for direction and path length
Retracting movement in tool direction
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming