Siemens SINUMERIK 840D sl Function Manual page 68

F2: Multi-axis transformations
2.7 Generic 5-axis transformation and variants
Effects on orientations
Generic 3-axis or 4-axis transformation has the following effect on the various orientations:
The resulting tool orientation is defined according to the hierarchy specified for generic 5-axis
transformation.
Priority:
● high: programmed orientation,
● medium: tool orientation and
● low: basic orientation
Allowance is made, in particular, for the following orientations:
● A programmed tool orientation
● A basic tool orientation, modified by orientable toolholders.
Note
Further information on programmable tool orientation and on basic tool orientation can be
found in:
Reference:
Function Manual, Basic Machine; Tool Offset; Orientable Toolholders (W1)
Programming Manual, Fundamentals
Comparison
Besides the 3- and 4-axis transformations mentioned in Section "3- and 4-axis
Transformations", the following differences should be noted:
● Position of the rotary axis:
– can be arbitrary
– need not be parallel to a linear axis
● Direction of the rotary axis
– Must be defined by the following machine data:
● Basic tool orientation
– Must be defined by the following machine data:
● Selection of a generic 3-/4-axis transformation
– Optional tool orientation can be transferred as in the case of a generic 5-axis
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MD24570 $MC_TRAFO5_AXIS1_1[n] (direction first rotary axis) or
MD24670 $MC_TRAFO5_AXIS1_2[n] (direction first rotary axis)
MD24574 $MC_TRAFO5_BASE_ORIENT_1[n] (workpiece orientation) or
MD24674 $MC_TRAFO5_BASE_ORIENT_2[n] (workpiece orientation)
transformation.
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions