HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 184)

184 Fixed Cycles: Contour Pocket
7.
7 FL
OOR FINISHING (Cy
c
le 23, DIN/ISO: G123)
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.