Heidenhain MANUALplus 4110 User Manual Page 165

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HEIDENHAIN MANUALplus 4110 165
4.6 Thread and Undercut Cycles
Thread cycle (longitudinal)
Call the thread-cutting menu.
Select the "Thread cycle."
Inner thread soft key
On: Internal thread
Off: External thread
This cycle cuts a single external or internal thread with a thread angle
of 30°. Tool infeed is performed in the X axis only.
Cycle parameters
X, Z starting point of thread
Z2 end point of thread
F1 thread pitch (= feed rate)
U thread depth
No input: Depth is calculated
External thread: U=0.6134*F1
Internal thread: U=–0.5413*F1
I 1st cutting depth
I<U: First cut with cutting depth I—further cuts: Reduction of
cutting depth
I=U: One cut
No input: Calculation from U and F1
T tool number
S spindle speed / cutting speed
Cycle run
1 Calculate the proportioning of cuts.
2 Start first pass at Z.
3 Move to end point Z2 at programmed feed rate.
4 Return on paraxial path and approach for next pass.
5 Repeat 3 and 4 until "depth U" has been reached.
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