HEIDENHAIN iTNC 530 61
1.3 Programming the first part
Program layout
NC programs should be arranged consistently in a similar manner. This
makes it easier to find your place, accelerates programming and
reduces errors.
Recommended program layout for simple, conventional contour
machining
1 Call the tool, define the tool axis
2 Retract the tool
3 Preposition the tool in the working plane near the contour starting
point
4 In the tool axis, position the tool above the workpiece, or
preposition immediately to workpiece depth. If required, switch on
the spindle/coolant
5 Approach the contour
6 Machine the contour
7 Depart the contour
8 Retract the tool, end the program
Further information on this topic:
Contour programming: See "Tool movements", page 220
Recommended program layout for simple cycle programs
1 Call the tool, define the tool axis
2 Retract the tool
3 Define the machining positions
4 Define the fixed cycle
5 Call the cycle, switch on the spindle/coolant
6 Retract the tool, end the program
Further information on this topic:
Cycle programming: See User’s Manual for Cycles
Example: Layout of contour machining programs
0 BEGIN PGM EXCONT MM
1 BLK FORM 0.1 Z X... Y... Z...
2 BLK FORM 0.2 X... Y... Z...
3 TOOL CALL 5 Z S5000
4 L Z+250 R0 FMAX
5 L X... Y... R0 FMAX
6 L Z+10 R0 F3000 M13
7 APPR ... RL F500
...
16 DEP ... X... Y... F3000 M9
17 L Z+250 R0 FMAX M2
18 END PGM EXCONT MM
Example: Cycle program layout
0 BEGIN PGM EXCYC MM
1 BLK FORM 0.1 Z X... Y... Z...
2 BLK FORM 0.2 X... Y... Z...
3 TOOL CALL 5 Z S5000
4 L Z+250 R0 FMAX
5 PATTERN DEF POS1( X... Y... Z... ) ...
6 CYCL DEF...
7 CYCL CALL PAT FMAX M13
8 L Z+250 R0 FMAX M2
9 END PGM EXCYC MM
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