Entering A Simple Contour Formula; Contour Machining With Sl Cycles - HEIDENHAIN TNC 620 User Manual

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Fixed Cycles: Contour Pocket with Contour Formula | SL cycles with simple contour formula

Entering a simple contour formula

You can use soft keys to interlink various contours in a
mathematical formula.
Show the soft-key row with special functions
Menu for functions: Press the soft key for
contour and point machining
Press the CONTOUR DEF soft key. The TNC
opens the dialog for entering the contour formula
Enter the name of the first subcontour. The first
subcontour must always be the deepest pocket.
Confirm with the ENT key.
Specify via soft key whether the next subcontour
is a pocket or an island. Confirm with the ENT
key.
Enter the name of the second subcontour.
Confirm with the ENT key.
If needed, enter the depth of the second
subcontour. Confirm with the ENT key.
Carry on with the dialog as described above until
you have entered all subcontours.
Always start the list of subcontours with the deepest
pocket!
If the contour is defined as an island, the TNC interprets
the entered depth as the island height. The entered
value (without an algebraic sign) then refers to the
workpiece top surface!
If the depth is entered as 0, then for pockets the depth
defined in the Cycle 20 is effective. Islands then rise up
to the workpiece top surface!

Contour machining with SL Cycles

The complete contour is machined with the SL Cycles
20 to 24 (see "Overview", Page 210).
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HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017