HEIDENHAIN TNC 320 (340 55x-04) Cycle programming - Manual (Page 212)

212 Fixed Cycles: Contour Pocket with Contour Formula
9.1 SL Cy
cles with Complex Cont
our F
o
rm
ula
9.1 SL Cycles with Complex
Contour Formula
Fundamentals
SL cycles and the complex contour formula enable you to form
complex contours by combining subcontours (pockets or islands). You
define the individual subcontours (geometry data) as separate
programs. In this way, any subcontour can be used any number of
times. The TNC calculates the complete contour from the selected
subcontours, which you link together through a contour formula.
Example: Program structure: Machining with SL
cycles and complex contour formula
0 BEGIN PGM CONTOUR MM
...
5 SEL CONTOUR “MODEL“
6 CYCL DEF 20 CONTOUR DATA...
8 CYCL DEF 22 ROUGH-OUT...
9 CYCL CALL
...
12 CYCL DEF 23 FLOOR FINISHING...
13 CYCL CALL
...
16 CYCL DEF 24 SIDE FINISHING...
17 CYCL CALL
63 L Z+250 R0 FMAX M2
64 END PGM CONTOUR MM
QC1 QC2
QC4
QC1
The memory capacity for programming an SL cycle (all
contour description programs) is limited to 128 contours.
The number of possible contour elements depends on the
type of contour (inside or outside contour) and the number
of contour descriptions. You can program up to 16384
elements.
The SL cycles with contour formula presuppose a
structured program layout and enable you to save
frequently used contours in individual programs. Using the
contour formula, you can connect the subcontours to a
complete contour and define whether it applies to a
pocket or island.
In its present form, the “SL cycles with contour formula”
function requires input from several areas in the TNC’s
user interface. This function is to serve as a basis for
further development.