Extension Of The Generic Transformation To Seven Axes - 840D Sl Only - Siemens SINUMERIK 840D sl Function Manual

F2: Multi-axis transformations
2.7 Generic 5-axis transformation and variants
Note
The orientation vector of a tool can also be defined via system the variables $TC_DPV or
$TC_DPV3 - $TC_DPV5 in tool data - see Function Manual Basic Machine, Tool Corrections
(W1), Section: Sum and setup offsets.
This option is expanded in order to specify the orientation normal vector, using system
variables $TC_DPVN3 - $TC_DPVN5. The meaning of the vector components is similar to the
meaning of the components of the tool orientation:
$TC_DPVN3 is the component in the direction of tool length L1,
$TC_DPVN4 is the component in the direction of tool length L2,
$TC_DPVN5 is the component in the direction of tool length L3,
The following machine data must have the value 3 in order to allow the new tool parameters
to be used:
MD18114 $MN_MM_ENABLE_TOOL_ORIENT (assign orientation to tool cutting)
The coordinate system is not rotated through the programming of a rotation of the tool with
AN3, BN3, CN3 or THETA.
Programming example
See Section "Example of a generic 6-axis transformation (Page 136)".
2.7.6

Extension of the generic transformation to seven axes - 840D sl only

Application
The generic 5-/6-axis transformation with transformation type 24 is extended by a 7th or 6th
axis, which rotates the workpiece. The work space of the transformation can be expanded in
this way.
Requirement
For generic 7-axis transformation there must be at least 6 or 7 axes.
Function
Another 7th axis is required in connection with the generic 6-axis transformation which rotates
the workpiece. This 7th axis is considered only along with transformation type 24 (generic 6-
axis transformation having 3 rotary axes that move the tool ).
The position of the 7th axis is specified according to a strategy of the CAD system and settled
with the Cartesian position (X, Y, Z) by the generic transformation in such a way that the axes
always approach the TCP position programmed with reference to the workpiece, independently
of the position of the 7th axis. If ORIWKS is active, the end orientation programmed with
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Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions