Metric Iso Thread G35 - HEIDENHAIN CNC PILOT 640 User Manual

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Metric ISO thread G35

G35 cuts a longitudinal thread (internal or external thread). The
thread starts at the current tool position and ends at the Final
point X, Z.
From the tool position relative to the Final point of the thread, the
control automatically determines whether an internal or external
thread is to be cut.
Parameters:
X: Final point (diameter value)
Z: Final point
F: Thread pitch
I: Max. approach
No input: I is calculated from the thread pitch and the thread
depth
Q: Number no-load.
V: Type of infeed
0: Const. mach. X-section
1: Const. infeed
2: EPL with distrib. of cuts
3: EPL w/o distrib. of cuts
4: MANUALplus 4110
5: Constant infeed (4290)
6: Const. w/ distrib. (4290)
NC stop – the control retracts the tool from the
thread groove and then stops all tool movements
Lift-off distance in the threadLiftOff machine
parameter (no. 601804)
If you are programming an internal thread, it is
advisable to preset the Thread pitch F since the
diameter of the longitudinal element is not the thread
diameter. If you have the control calculate the thread
pitch automatically, slight deviations may occur.
Example: G35
%35.nc
N1 T5 G97 S1500 M3
N2 G0 X16 Z4
N3 G35 X16 Z-29 F1.5
END
356
DIN/ISO programming | Thread cycles
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017