HEIDENHAIN TNC 407 (280 580) ISO Programming - Manual (Page 245)

8-25
8 Cycles
TNC 426/TNC 425/TNC 415 B/TNC 407
Fig. 8.26: Overlapping islands: area of intersection
Fig. 8.25: Overlapping islands: area of exclusion
8.3 SL Cycles (Group I)
A B
A
B
Area of exclusion
Surface A is to be left unmachined, without the
portion overlapped by B.
• A must be an island and B a pocket.
• B must start within 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 *
N99999 S822I G71*
Area of intersection
Only the area overlapped by both A and B is to
remain unmachined.
• A and B must be islands.
• A must start within 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 *
N99999 % S822I G71