Siemens sinumerik 840D sl Function Manual page 14

Brief description
1.3 Orientation transformation with a swivelling linear axis.
Figure 1-2
1.3 Orientation transformation with a swivelling linear axis.
Function
The orientation transformation with swivelling linear axis is similar to the 5-axis
transformation of Machine Type 3, though the 3rd linear axis is not always perpendicular to
the plane defined by the other two linear axes.
Features of kinematics
• Kinematics with three linear axes and two orthogonal rotary axes.
• Rotary axes are parallel to two of the three linear axes.
• The first rotary axis is moved by two Cartesian linear axes. It rotates the third linear axis,
• The second rotary axis rotates the workpiece.
• The kinematics comprise a moved workpiece and a moved tool.
The following figure shows the interrelations for one of the possible axis sequences, for
which transformation is possible.
8
Schematic diagram of a 4-axis transformation with moveable workpiece
which moves the tool. The tool is aligned parallel to the third linear axis.
Special functions: 3-Axis to 5-Axis Transformation (F2)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0