HEIDENHAIN TNC 640, User Manual, Page: 331 / 948

Programming Contours | Path contours – FK free contour programming
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
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Example: FK programming 3
0 BEGIN PGM FK3 MM
1 BLK FORM 0.1 Z X-45 Y-45 Z-20
Definition of workpiece blank
2 BLK FORM 0.2 X+120 Y+70 Z+0
3 TOOL CALL 1 Z S4500
Tool call
4 L Z+250 R0 FMAX
Retract the tool
5 L X-70 Y+0 R0 FMAX
Pre-position the tool
6 L Z-5 R0 F1000 M3
Move to working depth
7 APPR CT X-40 Y+0 CCA90 R+5 RL F250
Approach the contour on a circular arc with tangential
connection
8 FC DR- R40 CCX+0 CCY+0
FK contour section:
9 FLT
Program all known data for each contour element
10 FCT DR- R10 CCX+0 CCY+50
11 FLT
12 FCT DR+ R6 CCX+0 CCY+0
13 FCT DR+ R24
14 FCT DR+ R6 CCX+12 CCY+0
15 FSELECT 2
16 FCT DR- R1.5
17 FCT DR- R36 CCX+44 CCY-10
18 FSELECT 2
19 FCT DR+ R5
20 FLT X+110 Y+15 AN+0
21 FL AN-90
22 FL X+65 AN+180 PAR21 DP30
23 RND R5
24 FL X+65 Y-25 AN-90
25 FC DR+ R50 CCX+65 CCY-75
26 FCT DR- R65
27 FSELECT 1
28 FCT Y+0 DR- R40 CCX+0 CCY+0
29 FSELECT 4