Face Milling (Cycle 233, Din/Iso: G233, Software Option 19); Cycle Run - HEIDENHAIN TNC 620 User Manual

5
Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling | FACE MILLING (Cycle 233, DIN/ISO: G233,
5.9 FACE MILLING (Cycle 233, DIN/ISO:
G233, software option 19)

Cycle run

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
Strategy Q389=1: Meander machining, stepover at the edge of
the surface being machined
Q389=2: The surface is machined line by line with
Strategy
overtravel; stepover when retracting at rapid traverse
Q389=3: The surface is machined line by line without
Strategy
overtravel; stepover when retracting at rapid traverse
Strategy Q389=4: Helical machining from the outside toward
the inside
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
side.
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.
186
Meander machining, stepover outside the
in the working plane: The
1
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
software option 19)