HEIDENHAIN TNC 640 (34059x-04) Cycle programming - Manual (Page 232)

Fixed Cycles: Contour Pocket with Contour Formula
9.2 SL cycles with simple contour formula
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TNC 640 | User's Manual Cycle Programming | 3/2014
9.2 SL cycles with simple contour formula
Fundamentals
SL cycles and the simple contour formula enable you to form
contours by combining up to 9 subcontours (pockets or islands) in
a simple manner. 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 contour from the
selected subcontours.
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.
Program structure: Machining with
SL cycles and complex contour
formula
0 BEGIN PGM CONTDEF MM
...
5 CONTOUR DEF P1= "POCK1.H" I2
= "ISLE2.H" DEPTH5 I3 "ISLE3.H"
DEPTH7.5
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 CONTDEF MM