Heidenhain MANUALplus 4110 Manuel d'utilisateur Page 168

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168 4 Cycle Programming
4.6 Thread and Undercut Cycles
Tapered thread
Call the thread-cutting menu.
Select "Tapered thread."
Inner thread soft key
On: Internal thread
Off: External thread
This cycle cuts a single or multi-start tapered external or internal
thread.
Cycle parameters
X, Z starting point
X1, Z1 starting point of thread (without run-in)
X2, Z2 end point of thread (without run-out)
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 down to J.
I=U: One cut
No input: Calculation from U and F1
A feed angle (default: 30°): Range: –60° < A < 60°
A<0: Infeed on left thread flank
A>0: Infeed on right thread flank
W taper angle: Range: –60° < A < 60°
J remaining cutting depth—default: 1/100 mm
T tool number
S spindle speed / cutting speed
D number of thread starts—default: 1 single-start thread
E incremental gradient—default: 0
E=0: Constant pitch
E>0: Increase the pitch per revolution by E
E<0: Decrease the pitch per revolution by E
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