HEIDENHAIN TNC 620 (81760x-02) - Manual (Page 250)

Programming: Programming contours
6.6 Path contours – FK free contour programming (option 19)
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TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 2/2015
Example: FK programming 2
0 BEGIN PGM FK2 MM
1 BLK FORM 0.1 Z X+0 Y+0 Z-20
Definition of workpiece blank
2 BLK FORM 0.2 X+100 Y+100 Z+0
3 TOOL CALL 1 Z S4000
Tool call
4 L Z+250 R0 FMAX Retract the tool
5 L X+30 Y+30 R0 FMAX Pre-position the tool
6 L Z+5 R0 FMAX M3 Pre-position the tool
7 L Z-5 R0 F100 Move to working depth
8 APPR LCT X+0 Y+30 R5 RR F350 Approach the contour on a circular arc with tangential
connection
9 FPOL X+30 Y+30 FK contour section:
10 FC DR- R30 CCX+30 CCY+30 Program all known data for each contour element
11 FL AN+60 PDX+30 PDY+30 D10
12 FSELECT 3
13 FC DR- R20 CCPR+55 CCPA+60
14 FSELECT 2
15 FL AN-120 PDX+30 PDY+30 D10
16 FSELECT 3
17 FC X+0 DR- R30 CCX+30 CCY+30
18 FSELECT 2
19 DEP LCT X+30 Y+30 R5
Depart the contour on a circular arc with tangential
connection
20 L Z+250 R0 FMAX M2 Retract the tool, end program
21 END PGM FK2 MM