Interpretation Of The Programmed Rotary Axis Coordinates - HEIDENHAIN TNC 620 User Manual

Multiple-Axis Machining | FUNCTION TCPM (option 9)
Interpretation of the programmed rotary axis
coordinates
Up to now, machines with 45° swivel heads or 45° tilting tables
could not easily set the angle of inclination or a tool orientation
with respect to the currently active coordinate system (spatial
angle). This function could only be realized through specially written
programs with normal vectors (LN blocks).
The control now provides the following function:
AXIS POS determines that the control interprets
the programmed coordinates of rotary axes as
the nominal position of the respective axis
AXIS SPAT determines that the control interprets
the programmed coordinates of rotary axes as
spatial angles
Programming notes:
AXIS POS is particularly suitable in conjunction with
perpendicular rotary axes. Only if the programmed
rotary axis coordinates define the working plane
correctly (e.g. programmed using a CAM system),
you can also use AXIS POS with different machine
concepts (e.g. 45° swivel heads).
The AXIS SPAT function is used to define spatial
angles that are given with respect to the active
coordinate system (which might be tilted). The
defined angles have the effect of incremental spatial
angles. Always program all three spatial angles in the
first positioning block after the AXIS SPAT function,
even if they are 0°.
Example
...
13 FUNCTION TCPM F TCP AXIS POS ...
...
18 FUNCTION TCPM F TCP AXIS SPAT ...
20 L A+0 B+45 C+0 F MAX
...
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
Rotary axis coordinates are axis angles
Rotary axis coordinates are spatial angles
Set tool orientation to B+45 degrees (spatial angle). Define
space angle A and C with 0
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