HEIDENHAIN TNC 407 (280 580) ISO Programming - Manual (Page 249)

8-29
8 Cycles
TNC 426/TNC 425/TNC 415 B/TNC 407
Fig. 8.35: CONTOUR MILLING cycle
Fig. 8.34: ROUGH-OUT cycle
Fig. 8.33: PILOT DRILLING cycle
8.3 SL Cycles (Group I)
The following scheme illustrates the application of the cycles PILOT
DRILLING, ROUGH-OUT and CONTOUR MILLING in part programming.
1. List of contour subprograms
G37
No call
2. Drilling
Define and call the drilling tool
G56
Pre-positioning
Cycle call
3. Rough-out
Define and call rough milling tool
G57
Pre-positioning
Cycle call
4. Finishing
Define and call finish milling tool
G58/G59
Pre-positioning
Cycle call
5. Contour subprograms
M02 *
Subprograms for the subcontours