HEIDENHAIN TNC 410 ISO Programming - Manual (Page 333)

HEIDENHAIN TNC 410, TNC 426, TNC 430 307
8.9 Coo
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Combining coordinate transformation cycles
When combining coordinate transformation cycles, always make sure
the working plane is swiveled around the active datum. You can
program a datum shift before activating Cycle G80. In this case, you
are shifting the "machine-based coordinate system."
If you program a datum shift after having activated Cycle G80, you are
shifting the ”tilted coordinate system.”
Important: When resetting the cycles, use the reverse sequence used
for defining them:
Automatic workpiece measurement in the tilted system
The TNC measuring cycles enable you to have the TNC measure a
workpiece in a tilted system automatically. The TNC stores the
measured data in Q parameters for further processing (for example,
for printout).
Procedure for working with Cycle G80 WORKING PLANE
1 Write the program
U U U U Define the tool (not required, when TOOL.T is active), and enter the
full tool length.
U U U U Call the tool.
U U U U Retract the tool in the tool axis to a position where there is no
danger of collision with the workpiece (clamping devices) during
tilting.
U U U U If required, position the tilt axis or axes with a G01 block to the
appropriate angular value(s) (depending on a machine parameter).
U U U U Activate datum shift if required.
U U U U Define Cycle G80 WORKING PLANE; enter the angular values for the
tilt axes.
U U U U Traverse all main axes (X, Y, Z) to activate compensation.
U U U U Write the program as if the machining process were to be executed
in a non-tilted plane.
U U U U If required, define Cycle G80 WORKING PLANE with other angular
values to execute machining in a different axis position. In this case,
it is not necessary to reset Cycle G80. You can define the new
angular values directly.
U U U U Reset Cycle G80 WORKING PLANE; program 0° for all tilt axes.
U U U U Disable the WORKING PLANE function; redefine Cycle G80, without
defining an axis.
U U U U Reset datum shift if required.
U U U U Position the tilt axes to the 0° position, if required.
1st: Activate the datum shift.
2nd: Activate tilting function.
3rd: Activate rotation.
...
Machining
...
1st: Reset the rotation.
2nd: Reset the tilting function.
3rd: Reset the datum shift.