Siemens SINUMERIK 840D sl Operating Manual page 545

The last swivel plane remains active after a program reset or when the power fails. The
behavior at reset and power on can be set using machine data.
Block search when swiveling the plane / swiveling the tool
For block search with calculation, after NC start, initially, the automatic rotary axes of the active
swivel data set are pre-positioned and then the remaining machine axes are positioned. This
does not apply if a type TRACYL or TRANSMIT transformation is active after the block search.
In this case, all axes simultaneously move to the accumulated positions.
Aligning tools
The purpose of the "Align turning tool" function is to support turning machines with a swivel-
mounted B axis. The position and orientation of the turning tool can be changed by rotating
swivel axis B (around Y) and the tool spindle.
In contrast to "Swivel plane", no rotation is operative in the active work offsets in the workpiece
coordinate system in the case of "Align tool".
The maximum angular range for "Align milling tool" is limited by the traversing range of the
participating rotary axes. Technological limits are also placed on the angular range depending
on the tool used.
When aligning the tool, using the CUTMOD NC command, the tool data are calculated online
based on the tool orientation (positions of the B axis and the tool spindle). For a turning tool,
this involves the cutting edge position, the holder angle and the cut direction.
Name of swivel data set
Selecting the swivel data set or deselecting the swivel data set.
The selection can be hidden by the machine data.
For "Swivel plane" and "Swivel tool" / "Set tool", only the swivel data sets are available for
selection where no B axis kinematics, turning technology has been set.
"Swivel tool" / "Align tool", only the swivel data sets are available for selection where B axis
kinematics, turning technology has been set.
Turning
Operating Manual, 05/2017, A5E40868721
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Programming technology functions (cycles)
10.6 Further cycles and functions
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