Siemens SINUMERIK 840D sl Function Manual page 514

Kinematic Transformation (M1)
7.3 TRACYL
Transformation type 514 without groove side offset
Cylinder surface curve transformation TRAFO_TYPE_n = 514
If the machine has another linear axis which is perpendicular to both the rotary axis and the
first linear axis, transformation type 514 can be used to apply tool offsets with the real Y axis.
In this case, it is assumed that the user memory of the second linear axis is small and will
not be used to execute the part program.
The existing settings for MD10000 $MC_TRAFO_GEOAX_ASSIGN_TAB_n apply.
Grooves with groove side offset
The required inclusion of the tool offset has already been taken into account for the TRACYL
transformation with groove side offset.
Axis image
The following paragraph describes how the transformation axis image is specified.
TRAFO_AXES_IN_n
Three (or 4) channel axis numbers must be specified for TRACYL :
MD24110 $MC_TRAFO_AXES_IN_1[0]=channel axis number of the axis radial to the rotary
axis.
MD24110 $MC_TRAFO_AXES_IN_1[1]=channel axis number of the rotary axis.
MD24110 $MC_TRAFO_AXES_IN_1[2]=channel axis number of the axis parallel to the
rotary axis.
MD24110 $MC_TRAFO_AXES_IN_1[3]=channel axis number of the supplementary axis
parallel to the cylinder surface and perpendicular to the rotary axis (provided two axis
configurations are present).
Example in accordance with Figure "Machining grooves on a cylinder surface with X-Y-Z-C
kinematics":
MD24110 $MC_TRAFO_AXES_IN_1[0]=1
MD24110 $MC_TRAFO_AXES_IN_1[1]=4
MD24110 $MC_TRAFO_AXES_IN_1[2]=3
MD24110 $MC_TRAFO_AXES_IN_1[3]=2
The setting must be made before TRACYL(d) or TRACYL(d,t) is activated. The axis numbers
must refer to the channel axis sequences defined by the following machine data:
MD24120 $MC_TRAFO_GEOAX_ASSIGN_TAB_n
514
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions