HEIDENHAIN TNC 410 ISO Programming - Manual (Page 293)

HEIDENHAIN TNC 410, TNC 426, TNC 430 267
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CONTOUR GEOMETRY (Cycle G37)
All subprograms that are superimposed to define the contour are
listed in Cycle G37 CONTOUR GEOMETRY.
U U U U Label numbers for the contour: Enter all label
numbers for the individual subprograms that are to be
superimposed to define the contour. Confirm every
label number with the ENT key. When you have
entered all numbers, conclude entry with the END
key.
Overlapping contours
Pockets and islands can be overlapped to form a new contour. You can
thus enlarge the area of a pocket by another pocket or reduce it by an
island.
Subprograms: Overlapping pockets
Pockets A and B overlap.
Example: NC blocks
N120 G37 P01 1 P02 5 P03 7 P04 8 *
A
C D
B
X
Y
A B
S
1
S
2
Before programming, note the following:
Cycle G37 is DEF active which means that it becomes
effective as soon as it is defined in the part program.
You can list up to 12 subprograms (subcontours) in Cycle
G37
.
The subsequent programming examples are contour
subprograms that are called by Cycle G37 CONTOUR
GEOMETRY in a main program.