Siemens sinumerik 840D sl Function Manual page 53

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
2.6.4 Parameterization of orientable tool holder data
Application
Machine types for which the table or tool can be rotated, can either be operated as true 5-
axis machines or as conventional machines with orientable tool holders. In both cases,
machine kinematics is determined by the same data, which, due to different parameters,
previously had to be entered twice - for tool holder via system varaibles and for
transformations via machine data. The new transformation type 72 can be used to specify
that these two machine types access identical data.
Transformation type 72
The following machine data can be used to define a generic 5-axis transformation for
transformation type 72 with kinematic data read from the data for an orientable tool holder.
MD24100 $MC_TRAFO_TYPE_1 (definition of transformation 1 in the channel) or
MD24200 $MC_TRAFO_TYPE_2 (definition of transformation 2 in the channel)
From this number data is made available via machine data MD24582
$MC_TRAFO5_TCARR_NO_1 (TCARR-Number for the first 5-axis transformation) for the
first or MD24682 $MC_TRAFO5_TCARR_NO_2 (TCARR-Number for the second 5-axis
transformation) for the second orientation transformation. The corresponding transformation
type can then be derived from the content of kinematic type with parameter $TC_CARR23 -
see following table.
Special functions: 3-Axis to 5-Axis Transformation (F2)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
– 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.
2.6 Generic 5-axis transformation and variants
Detailed description
47