HEIDENHAIN TNC 620 User Manual page 293

Testing and running | Running CAM programs
Useful configurations for the machine tool operator:
In order to enable a realistic graphic simulation, use 3-D models
in STL format as a workpiece blank and finished part
In order to improve the structure of large NC programs, use the
control's structuring function
Use the control's commenting function in order to document NC
programs
Use the comprehensive cycles of the control available for the
machining of holes and simple pocket geometries
Further information: User's Manual for Programming of
Machining Cycles
For fits, output the contours with RL/RR tool radius
compensation. This makes it easy for the machine operator to
make necessary compensations
Separate feed rates for pre-positioning, machining, and
downfeeds, and define them via Q parameters at the beginning of
the program
Example: Variable feed rate definitions
1 Q50 = 7500
2 Q51 = 750
3 Q52 = 1350
...
25 L Z+250 R0 FMAX
26 L X+235 Y-25 FQ50
27 L Z+35
28 L Z+33.2571 FQ51
29 L X+321.7562 Y-24.9573 Z+33.3978 FQ52
30 L X+320.8251 Y-24.4338 Z+33.8311
...
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022
FEED RATE FOR POSITIONING
FEED RATE FOR PLUNGING
FEED RATE FOR MILLING
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