HEIDENHAIN TNC 320 (340 551-01) - Manual (Page 257)

HEIDENHAIN TNC 320 257
8.5 SL Cy
cles
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.
The TNC calculates the points of intersection S
1
and S
2
. They do not
have to be programmed.
The pockets are programmed as full circles.
Subprogram 1: Pocket A
Subprogram 2: Pocket B
Example: NC blocks
12 CYCL DEF 14.0 CONTOUR GEOMETRY
13 CYCL DEF 14.1 CONTOUR LABEL 1/2/3/4
X
Y
A B
S
1
S
2
The subsequent programming examples are contour
subprograms that are called by Cycle 14 CONTOUR
GEOMETRY in a main program.
51 LBL 1
52 L X+10 Y+50 RR
53 CC X+35 Y+50
54 C X+10 Y+50 DR-
55 LBL 0
56 LBL 2
57 L X+90 Y+50 RR
58 CC X+65 Y+50
59 C X+90 Y+50 DR-
60 LBL 0