HEIDENHAIN TNC 620 (81760x-02) - Manual (Page 436)

Programming: Multiple axis machining
12.3 Inclined-tool machining in a tilted plane (option 9)
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TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 2/2015
Inclined-tool machining via normal vectors
Only one directional vector can be defined in the LN
block. This vector defines the incline angle (normal
vector
NX, NY, NZ, or tool direction vector TX, TY,
TZ).
Retract the tool
Define any PLANE function; consider the positioning behavior
Activate M128
Execute program with LN blocks in which the tool direction is
defined by a vector
Example NC blocks
...
12 L Z+50 R0 FMAX
Position at clearance height
13 PLANE SPATIAL SPA+0 SPB+45 SPC+0 MOVE ABST50
F1000
Define and activate the PLANE function
14 M128 Activate M128
15 LN X+31.737 Y+21.954 Z+33.165 NX+0.3 NY+0 NZ
+0.9539 F1000 M3
Set the incline angle with the normal vector
... Define machining in the tilted working plane