Siemens sinumerik 840D sl Function Manual page 11

Brief description
1.1 5-axis Transformation
Function
The "5-Axis Transformation" machining package is designed for machining sculptured
surfaces that have two rotary axes in addition to the three linear axes X, Y, and Z. This
package thus allows an axially symmetrical tool (milling cutter, laser beam) to be oriented in
any desired relation to the workpiece in the machining space.
The path and path velocity are programmed in the same way as for 3-axis tools. The tool
orientation is programmed additionally in the traversing blocks.
The real-time transformation performs the calculation of the resulting motion of all 5 axes.
The generated machining programs are therefore not machine specific. Kinematic-specific
post-processors are not used for the 5-axis machining operation.
A selection of various transformations is available for adapting the control to various machine
kinematics. Part program commands can be issued in operation to switch over between two
transformations parameterized during start-up.
This package therefore covers the three possible basic machine configurations which differ
in terms of tool and workpiece orientation:
• Orientation of tool with two-axis swivel head (machine type 1)
• Orientation of workpiece with two-axis rotary table (machine type 2)
• Orientation of workpiece and tool with single-axis rotary table and swivel head (machine
The calculation also includes tool length compensation.
Since the orientation in relation to the workpiece surface is stored in a separate FRAME, a
tool retraction operation with vertical orientation to the workpiece is also possible.
Special functions: 3-Axis to 5-Axis Transformation (F2)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
type 3)
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