Face Milling (Cycle 233, Din/Iso: G233); Cycle Run - HEIDENHAIN TNC 640 User Manual

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

FACE MILLING (Cycle 233, DIN/ISO:

Cycle 233 is used to face mill a level surface in multiple infeeds

while taking the finishing allowance into account. Additionally,

you can also define side walls in the cycle which are taken into

account during the machining of the level surface The cycle offers

you various machining strategies:

Strategy Q389=0:

surface being machined

Q389=1: Meander machining, stepover at the edge of

the surface being machined

Q389=2: The surface is machined line by line with

overtravel; stepover when retracting at rapid traverse

Q389=3: The surface is machined line by line without

overtravel; stepover when retracting at rapid traverse

Q389=4: Helical machining from the outside toward

1 From the current position, the TNC positions the tool at rapid

traverse FMAX to the starting point

starting point in the working plane is offset from the edge of

the workpiece by the tool radius and the safety clearance to the

2 The TNC then positions the tool at rapid traverse FMAX to the

set-up clearance in the spindle axis.

3 The tool then moves in the tool axis at the feed rate for milling

Q207 to the first plunging depth calculated by the TNC.

Meander machining, stepover outside the

in the working plane: The

HEIDENHAIN | User's manual for cycle programming | 10/2017