HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 403)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 403
4.29 Other G codes
Eccentric X G727
G727 is used to machine elliptical polygons.
The turning contours are programmed using separate turning cycles.
Machine and control must be specially prepared by the
machine tool builder for use of this cycle. Refer to your
machine manual.
Requirement:
 Software option Synchronizing Functions
Parameters
H Activate coupling
 H=0: Deactivate coupling
 H=1: Activate coupling
Q Reference spindle: Number of the spindle that is coupled
with the X axis (machine-dependent)
I X travel +/-: Half of the superimposed X-axis movement
(radius value)
C C position at Z start: C-axis angle of X travel
F Maximum rapid traverse: Permissible rapid traverse for the
X axis while coupling is active
E Form factor: Number of X travels with respect to one
spindle revolution
Z Z start: Reference value for the parameter C
W Delta C [°/mm Z]: Difference in C-axis angle with respect to
a distance of 1 mm in the Z axis
Please note while programming:
 Program a workpiece blank increased by the center
offset in the radius if you are using turning cycles that
are referenced to the workpiece-blank definition.
 Program a starting point increased by the center offset
in the radius if you are using turning cycles that are not
referenced to the workpiece-blank definition.
 Reduce the spindle speed if you increase the center
offset.
 Reduce the maximum rapid traverse F if you increase
the center offset.
 Use identical values for the parameter Q when activating
and deactivating the coupling.