HEIDENHAIN TNC 360 ISO Programming - Manual (Page 176)

8-23
8 Cycles
TNC 360
Fig. 8.24: Overlapping islands: area of exclusion
Fig. 8.25: Overlapping islands: area of intersection
8.3 SL Cycles
A
B
A B
Area of exclusion
All of surface A is to be left unmachined except the
portion overlapped by B:
• A must be an island and B a pocket.
• B must start inside A.
N180 G98 L2 *
N190 G01 G42 X+10 Y+50 *
N200 I+35 J+50 G03 X+10 Y+50 *
N210 G98 L0 *
N220 G98 L3 *
N230 G01 G41 X+40 Y+50 *
N240 I+65 J+50 G03 X+40 Y+50 *
N250 G98 L0 *
N9999 S822I G71*
Area of intersection
Only the area of intersection of A and B is to be left
unmachined.
• A and B must be islands.
• A must start inside B.
N180 G98 L2 *
N190 G01 G42 X+60 Y+50 *
N200 I+35 J+50 G03 X+60 Y+50 *
N210 G98 L0 *
N220 G98 L3 *
N230 G01 G42 X+90 Y+50 *
N240 I+65 J+50 G03 X+90 Y+50 *
N250 G98 L0 *
N9999 % S822I G71