Siemens SINUMERIK 840D sl Operating Manual page 477

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
● Solid angle
● Projection angle
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.
When projection angles around YZ and ZY are programmed, the new Y-axis of the swiveled
coordinate system lies in the old X-Y plane.
● directly
Turning
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
Machine manufacturer
Please refer to the machine manufacturer's specifications.
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.
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.
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
For direct swiveling, the required positions of the rotary axes are specified. The HMI
calculates a suitable new coordinate system based on these values. The tool axis is
aligned in the Z direction. You can derive the resulting direction of the X and Y axis by
traversing the axes.
Note
Direction of rotation
The positive direction of each rotation for the different swivel versions is shown in the
help displays.
Programming technology functions (cycles)
8.6 Further cycles and functions
477