HEIDENHAIN TNC 620 E, User Manual

Page: 591 / 840

Multiple-Axis Machining | Running CAM programs
13
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
591
Useful configurations for the machine tool operator:
In order to improve the structure of large NC programs, use the
control’s structuring function
Further information: "Structuring programs", page 205
Use the control’s commenting function in order to document
NC programs
Further information: "Adding comments", page 201
When the machining of drill holes and simple pocket
geometries, use the comprehensive cycles available in the
control: See the Cycle Programming User's Manual
For fits, output the contours with
RL/RR
tool radius
compensation. This makes it easy for the machine operator to
make necessary compensations
Further information: "Tool compensation", page 256
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 ; POSITION FEED RATE
2 Q51 = 750 ; FEED RATE FOR PLUNGING
3 Q52 = 1350 ; FEED RATE FOR MILLING
...
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
...