HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 250)

8 Programming: Cycles 234
Procedure for working with Cycle G80 WORKING PLANE
1 Write the program
■ Define the tool (not required, when TOOL.T is active), and enter
the full tool length.
■ Call the tool.
■ Retract the tool in the tool axis to a position where there is no
danger of collision with the workpiece (clamping devices) during
tilting.
■ If required, position the tilt axis or axes with a G01 block to the
appropriate angular value(s) (depending on a machine parameter).
■ Activate datum shift if required.
■ Define Cycle G80 WORKING PLANE; enter the angular values for
the tilt axes.
■ Traverse all main axes (X, Y, Z) to activate compensation.
■ Write the program as if the machining process were to be
executed in a non-tilted plane.
■ Reset Cycle G80 WORKING PLANE; program 0° for all tilt axes.
■ Disable the WORKING PLANE function; redefine Cycle G80 and
answer the dialog question with “NO ENT.”
■ Reset datum shift if required.
■ Position the tilt axes to the 0° position if required.
2 Clamp the workpiece
3 Preparations in the operating mode
Positioning with MDI
Pre-position the tilt axis/axes to the corresponding angular value(s)
for setting the datum. The angular value depends on the selected
reference plane on the workpiece.
4 Preparations in the operating mode
Manual Operation
Use the 3D-ROT soft key to set the function TILT WORKING PLANE
to ACTIVE in the Manual Operation mode. Enter the angular values
for the tilt axes into the menu if the axes are not controlled.
If the axes are not controlled, the angular values entered in the
menu must correspond to the actual position(s) of the tilted axis or
axes, respectively. The TNC will otherwise calculate a wrong datum.
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