Siemens SINUMERIK 840D sl Function Manual page 64

F2: Multi-axis transformations
1.7 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:
References: /FB1/Function Manual Basic Functions; Tool Offset; Orientable Tool Carriers
(W1)
/PG/Programming Guide Basics
Comparison
Besides the 3- and 4-axis transformations mentioned in Chapter "3- and 4-axis
Transformations", the follwing differences should be noted:
• Position of the rotary axis:
-
-
• Direction of the rotary axis
-
• Basic tool orientation
-
• Selection of a generic 3-/4-axis transformation
-
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can be arbitrary
need not be parallel to a linear axis
Must be defined by the following machine data:
MD24570 $MC_TRAFO5_AXIS1_1[n] (direction first rotary axis) or
MD24670 $MC_TRAFO5_AXIS1_2[n] (direction first rotary axis)
Must be defined by the following machine data:
MD24574 $MC_TRAFO5_BASE_ORIENT_1[n] (workpiece orientation) or
MD24674 $MC_TRAFO5_BASE_ORIENT_2[n] (workpiece orientation)
Optional tool orientation can be transferred as in the case of a generic 5-axis
transformation.
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions