HEIDENHAIN MANUALplus 4110 - Manual (Page 340)

340 6 DIN Programming
6.15 Thr
ead Cy
cles
Simple longitudinal single-start thread G350
G350 cuts a longitudinal thread (internal or external thread). The thread
starts at the current tool position and ends at the "end point X, Z."
Parameters
 Z end point of thread
 F thread pitch
 U thread depth
„ U>0: Internal thread
„ U<=0: External thread (lateral surface or front face)
„ U= +999 or –999: Thread depth is calculated
 I maximum infeed —no input: I is calculated from the thread pitch
and the thread depth.
Internal or external threads: See algebraic sign of "U."
Handwheel superposition (provided that your machine is equipped
accordingly): The superposition is limited to the following range:
„ X direction: Depends on the current cutting depth; the starting and
end points of the thread are not exceeded.
„ Z direction: No more than one turn; the starting and end points of
the thread are not exceeded.
Example: G350
%350.nc
[G350]
N1 T45 G97 S1500 G95 F1.5 M3
N2 G0 X16 Z4
N3 G350 Z-29 F1.5 U-999
END
„ "Cycle STOP" becomes effective at the end of a thread
cut.
„ The feed rate and spindle speed overrides are not
effective during cycle execution.
„ Handwheel superposition is activated with a switch
located on the machine operating panel.
„ Feedforward control is switched off.