Please Note While Programming - HEIDENHAIN TNC 640 User Manual

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Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling | FACE MILLING (Cycle 233, DIN/ISO: G233)

Please note while programming:

Pre-position the tool in the machining plane to the
starting position with radius compensation R0. Keep in
mind the machining direction.
The TNC automatically pre-positions the tool in the tool
axis. Observe Q204 2ND SET-UP CLEARANCE.
Enter the Q204 2ND SET-UP CLEARANCE so that no
collision with the workpiece or the fixtures can occur.
If Q227 STARTNG PNT 3RD AXIS and Q386 END POINT
3RD AXIS are entered as equal values, the TNC will not
carry out the cycle (depth=0 programmed).
The TNC reduces the infeed depth to the LCUTS tool
length defined in the tool table if the tool length is
shorter than the Q202 infeed depth programmed in the
cycle.
If you define Q370 TOOL PATH OVERLAP >1, the
programmed overlap factor is taken into account from
the first machining path.
Cycle 233 monitors the entry for tool length / length of
the cutting edge LCUTS in the tool table. If the length of
the tool or teeth is not sufficient for finishing operations,
The TNC subdivides the machining into several working
steps.
Danger of collision!
If you enter a positive depth with a cycle, the TNC reverses
calculation of the pre-positioning. This means that the tool
moves at rapid traverse in the tool axis to set-up clearance
below the workpiece surface!
Enter depth as negative
Enter in machine parameter displayDepthErr (No. 201003)
whether the TNC should output an error message (on) or not
(off) if a positive depth is entered
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NOTICE
HEIDENHAIN | User's manual for cycle programming | 10/2017