HEIDENHAIN TNC 640 (34059x-04) Cycle programming - Manual (Page 192)

Fixed Cycles: Contour Pocket
7.7 FLOOR FINISHING (Cycle 23, DIN/ISO: G123)
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TNC 640 | User's Manual Cycle Programming | 3/2014
7.7 FLOOR FINISHING (Cycle 23, DIN/ISO:
G123)
Cycle run
The tool approaches the machining plane smoothly (on a vertically
tangential arc) if there is sufficient room. If there is not enough
room, the TNC moves the tool to depth vertically. The tool then
clears the finishing allowance remaining from rough-out.
Please note while programming:
The TNC automatically calculates the starting point
for finishing. The starting point depends on the
available space in the pocket.
The approaching radius for pre-positioning to the final
depth is permanently defined and independent of the
plunging angle of the tool.
Danger of collision!
After executing an SL cycle you must program the
first traverse motion in the working plane with both
coordinate data, e.g.
L X+80 Y+0 R0 FMAX.
Cycle parameters
Feed rate for plunging Q11: Traversing speed of
the tool when plunging into the workpiece in mm/
min. Input range 0 to 99999.9999 alternatively
FAUTO, FU, FZ
Feed rate for milling Q12: Traversing speed of
the tool in the working plane. Input range 0 to
99999.9999, alternatively
FAUTO, FU, FZ
Retraction feed rate Q208: Traversing speed of
the tool in mm/min when retracting after machining.
If you enter Q208 = 0, the TNC retracts the tool at
the feed rate in Q12. Input range 0 to 99999.9999,
alternatively
FMAX,FAUTO
NC blocks
60 CYCL DEF 23 FLOOR FINISHING
Q11=100 ;FEED RATE FOR
PLNGNG
Q12=350 ;FEED RATE FOR
MILLING
Q208=9999 ;RETRACTION FEED
RATE