HEIDENHAIN TNC 640 User Manual page 611

Multiple-Axis Machining | The PLANE function: Tilting the working plane (option 8)
Example for machine with rotary table C and tilting table A.
Programmed function: PLANE SPATIAL SPA+0 SPB+45 SPC+0
Limit switch
None
None
None
None
None
None
–90 < A < +10
–90 < A < +10
None
Selecting the type of transformation (entry optional)
The transformation types COORD ROT and TABLE ROT influence
the orientation of the working plane coordinate system through the
axis position of a so-called free rotary axis.
Any rotary axis becomes a free rotary axis with the following
constellation:
the rotary axis has no effect on the tool angle of inclination
because the rotation axis and tool axis are parallel in the tilting
situation
the rotary axis is the first rotary axis in the kinematic chain
starting from the workpiece
The effect of the transformation types COORD ROT and TABLE ROT
therefore depends on the programmed spatial angles and the
machine kinematics.
Programming notes:
If no free rotary axis is created in a tilting situation,
the COORD ROT and TABLE ROT transformation
types have no effect
With the PLANE AXIAL function the COORD ROT and
TABLE ROT transformation types have no effect
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Starting position
A+0, C+0
A+0, C+0
A+0, C+0
A+0, C–105
A+0, C–105
A+0, C–105
A+0, C+0
A+0, C+0
A+0, C–135
SEQ Resulting axis position
not prog. A+45, C+90
+ A+45, C+90
– A–45, C–90
not prog. A–45, C–90
+ A+45, C+90
– A–45, C–90
not prog. A–45, C–90
+ Error message
+ A+45, C+90
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