HEIDENHAIN TNC 640 (34059x-04) ISO programming - Manual (Page 406)

Programming: Multiple Axis Machining
12.3 Inclined-tool machining in a tilted machining plane (software
option 2)
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TNC 640 | User's Manual for DIN/ISO Programming | 3/2014
12.3 Inclined-tool machining in a tilted
machining plane (software option 2)
Function
In combination with M128 and the new PLANE functions, inclined-
tool machining in a tilted machining plane is now possible. Two
possibilities are available for definition:
Inclined-tool machining via incremental traverse of a rotary axis
Inclined-tool machining via normal vectors
Inclined-tool machining in a tilted machining plane
only functions with spherical cutters. With 45°
swivel heads and tilting tables you can also define
the incline angle as a space angle. Use the , See
"FUNCTION TCPM (software option 2)", page 415.
Inclined-tool machining via incremental traverse of a
rotary axis
Retract the tool
Activate M128
Define any PLANE function; consider the positioning behavior
Via a straight-line block, traverse to the desired incline angle in
the appropriate axis incrementally
Example NC blocks
...
N12 G00 G40 Z+50 M128 *
Position at clearance height, activate M128
N13 PLANE SPATIAL SPA+0 SPB-45 SPC+0 MOVE ABST50
F900 *
Define and activate the PLANE function
N14 G01 G91 F1000 B-17 * Set the incline angle
... Define machining in the tilted working plane