HEIDENHAIN iTNC 530 (340 49x-01) ISO programming - Manual (Page 406)

406 8 Programming: Cycles
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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
8 Define the tool (not required if TOOL.T is active), and enter the full
tool length.
8 Call the tool
8 Retract the tool in the tool axis to a position where there is no
danger of collision with the workpiece (clamping devices) during
tilting.
8 If required, position the tilt axis or axes with a G01 block to the
appropriate angular value(s) (depending on a machine parameter).
8 Activate datum shift if required.
8 Define Cycle G80 WORKING PLANE. Enter the angular values for the
tilt axes.
8 Traverse all main axes (X, Y, Z) to activate compensation.
8 Write the program as if the machining process were to be executed
in a non-tilted plane.
8 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.
8 Reset Cycle G80 WORKING PLANE. Program 0° for all tilt axes.
8 Disable the WORKING PLANE function; redefine Cycle G80, without
defining an axis.
8 Reset datum shift if required.
8 Position the tilt axes to the 0° position if required.
1. Activate the datum shift.
2. Activate tilting function
3. Activate rotation
...
Machining
...
1. Reset the rotation
2. Reset the tilting function
3. Reset the datum shift