Siemens SINUMERIK 840D sl Operating Manual page 544

Programming technology functions (cycles)
10.6 Further cycles and functions
Prerequisites before calling the swivel cycle
A tool (tool cutting edge D > 0) and the work offset (WO), with which the workpiece was
scratched or measured, must be programmed before the swivel cycle is first called in the main
program.
Example:
N1 T1D1
N2 M6
N3 G17 G54
N4 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,1,0,1))
N5 WORKPIECE(,,,,"BOX",0,0,50,0,0,0,100,100)
For machines where swivel is set-up, each main program with a swivel should start in the initial
position of the machine.
The definition of the blank (WORKPIECE) always refers to the currently effective work offset.
For programs that use "swivel", a swivel to zero must be made before the blank is defined. For
ShopTurn programs, the blank in the program header is automatically referred to the
unswiveled state.
In the swivel cycle, the work offset (WO) as well as the shifts and rotations of the parameters
of the CYCLE800 are converted to the corresponding machining plane. The work offset is kept.
Shifts and rotations are saved in system frames - the swivel frames (displayed under parameter/
work offsets):
● Tool reference ($P_TOOLFRAME)
● Rotary table reference ($P_PARTFRAME)
● Workpiece reference ($P_WPFRAME)
The swivel cycle takes into account the actual machining plane (G17, G18, G19).
Swiveling on a machining or auxiliary surface always involves 3 steps:
● Shifting the WCS before rotation
● Rotating the WCS (axis-by-axis, ...)
● Shifting the WCS after rotation
The shifts and rotations refer to the coordinate system X, Y, Z of the workpiece and are
therefore independent of the machine (with the exception of swivel "rotary axis direct").
No programmable frames are used in the swivel cycle. The frames programmed by the user
are taken into account for additive swiveling.
On the other hand, when swiveling to a new swivel plane, the programmable frames are
deleted. Any type of machining operation can be performed on the swivel plane, e.g. by calling
standard or measuring cycles.
544
;swivel ZERO to
;initial position of the
;machine kinematics
;blank declaration for
;simulation and
;simultaneous recording
Operating Manual, 05/2017, A5E40868721
Turning