HEIDENHAIN TNC 620 (34056x-04) Cycle programming - Manual (Page 173)

Superimposed contours 7.3
7
TNC 620 | User's Manual Cycle Programming | 5/2013
173
7.3 Superimposed contours
Fundamentals
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.
NC blocks
12 CYCL DEF 14.0 CONTOUR
13 CYCL DEF 14.1 CONTOUR LABEL
1/2/3/4
Subprograms: overlapping pockets
The subsequent programming examples are contour
subprograms that are called by Cycle 14 CONTOUR
GEOMETRY in a main program.
Pockets A and B overlap.
The TNC calculates the points of intersection S1 and S2 (they do
not have to be programmed).
The pockets are programmed as full circles.
Subprogram 1: Pocket A
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
Subprogram 2: Pocket B
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