Siemens SINUMERIK 840D sl Operating Manual page 547

Swivel plane (only for G code programming)
● New
Previous swivel frames and programmed frames are deleted and a new swivel frame is
formed according to the values specified in the input screen.
Every main program must begin with a swivel cycle with the new swivel plane, in order to
ensure that a swivel frame from another program is not active.
● Additive
The swivel frame is added to the swivel frame from the last swivel cycle.
If several swivel cycles are programmed in a program and programmable frames are also
active between them (e.g., AROT ATRANS), these are taken into account in the swivel
frame.
If the currently active WO contains rotations, e.g., due to previous workpiece measuring
operations, they will be taken into account in the swivel cycle.
Swivel mode
Swiveling can either be realized axis-by-axis, using the angle in space, using the projection
angle or directly. The machine manufacturer determines when setting up the "Swivel plane/
swivel tool" function which swivel methods are available.
● Axis by axis
In the case of axis-by-axis swiveling, the coordinate system is rotated about each axis in
turn, with each rotation starting from the previous rotation. The axis sequence can be freely
selected.
● Solid angle
With the solid angle swiveling option, the tool is first rotated about the Z axis and then about
the Y axis. The second rotation starts from the first.
● Projection angle
When swiveling using the projection angle, the angle value of the swiveled surface is
projected onto the first two axes of the right-angle coordinate system. The user can freely
select the axis rotation sequence.
The 3rd rotation is based on the previous rotation. The active plane and the tool orientation
must be taken into consideration when the projection angle is used:
– For G17 projection angle XY, 3rd rotation around Z
– For G18 projection angle ZX, 3rd rotation around Y
– For G19 projection angle YZ, 3rd rotation around X
When projection angles around XY and YX are programmed, the new X-axis of the swiveled
coordinate system lies in the old ZX plane.
When projection angles around XZ and ZX are programmed, the new Z-axis of the swiveled
coordinate system lies in the old Y-Z plane.
Turning
Operating Manual, 05/2017, A5E40868721
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Programming technology functions (cycles)
10.6 Further cycles and functions
547