Eccentric Transition G726 - HEIDENHAIN CNC PILOT 640 User Manual

DIN/ISO programming | Other G codes
Programming sequence:
Position the cursor in the MACHINING program section
Program function G725 with H1 (activate coupling)
Program turning cycles
Program function G725 with H0 (deactivate coupling)
Canceling the program run automatically deactivates the
coupling.

Eccentric transition G726

G726 is used to machine turning contours outside the original
turning center. In addition, G726 offers the possibility to
continuously change the position of the turning center along a
straight line or a curve.
The turning contours are programmed using separate turning
cycles.
Refer to your machine manual.
This function is set by your machine tool builder.
Prerequisites:
Y-Axis Machining software option
Synchronizing Functions software option
Parameters:
H: Activate coupling
H = 0: Deactivate coupling
H = 1: Activate coupling
Q: Reference spindle – number of the spindle coupled with
axes X and Y (machine-dependent)
R: Center offset – distance from eccentric center point to
original turning center (radius value)
C: Position C – C-axis angle of the center offset
F: Max. rapid traverse – permissible rapid traverse for X and Y
axes with activated coupling
V: Direction reversal in Y (machine-dependent)
V = 0: The control uses the configured axis direction for Y-
axis movements
V = 1: The control reverses the configured axis direction for
Y-axis movements
Z: Z start – reference value for the parameters R and C, as well
as coordinate for tool pre-positioning
K: Z end – reference value for the parameters W and U
W: Delta C [Z start to Z end] – difference in C-axis angle with
respect to Z start and Z end
U: Eccentricity at Z end – distance from eccentric center point
to original turning center (radius value)
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
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