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First Steps with the TNC 128 | 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
Example
0 BEGIN PGM BSPCONT 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 Z+250 R0 FMAX
5 X... R0 FMAX
6 Z+10 R0 F3000 M13
7 X... R- F500
...
16 X... R0 FMAX
17 Z+250 R0 FMAX M2
18 END PGM BSPCONT MM
1 Call tool, define tool axis
2 Retract the tool
3 Pre-position 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 Contour approach
6 Contour machining
7 Contour departure
8 Retract the tool, end program
Further information on this topic
Contour programming
Further information:
page 212
HEIDENHAIN | TNC 128 | Conversational Programming User's Manual | 10/2017
"Structure blocks in NC program",
1
63
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