Siemens SINUMERIK 840D sl Function Manual page 531

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
Grooves without groove wall offset
For transformation type 514 the following indices apply for $MC_TRAFO_AXES_IN_n[ ].
Meaning of indices in relation to base coordinate system (BCS):
● [0]: Cartesian axis radial to rotary axis (if configured)
● [1]: Axis in generated cylinder surface perpendicular to rotary axis
● [2]: Cartesian axis parallel to rotary axis
● [3]: Linear axis parallel to index 2 in initial position of machine
Meaning of indices in relation to machine coordinate system (MCS):
● [0]: Linear axis radial to rotary axis (if configured)
● [1]: Rotary axis
● [2]: Linear axis parallel to rotary axis
● [3]: Linear axis perpendicular to the axes of indices [0] and [1]
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
M1: Kinematic transformation
7.3 TRACYL (option)
531