Siemens SINUMERIK 828D Manual page 93

3.5
Important functions for 3- to 5-axis machining
Tool orientation in the 5-axis area
To change a tool orientation from the start orientation of the start block (X1, Y1, Z1) to the target
orientation of the next block (X2, Y2, Z2), it is also not sufficient to only specify the coordinates.
How the vectors move must also be defined. In a plane, on a conical surface or an otherwise
curved surface. The G codes of group 51, ORIVECT, ORIAXES, ORICONXX, ORICURVE, etc.
are used for this purpose.
This is best seen when the position of the tool tip and the tool orientation are changed
simultaneously. This can generally be described by two curves. The orange line describes the
movement of the tool tip while the green line defines the movement of a second point on the tool.
These two curves clearly describe the surface on which the tool moves. This fact is used for the
3D spline interpolation ORICURVE by displaying the orange and the green lines through spline
curves.
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