HEIDENHAIN MANUALplus 4110 Pilot - Manual (Page 78)

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Threadcut cycle group
Simple longitudinal single-start thread G350
Extended longitudinal multi-start thread G351
With G350/G351, you can cut internal and external longitudinal threads.
The thread starts at the tool position and ends at “Z“.
Parameters
Z:
Final point of thread
F: Thread pitch
U: Thread depth
U>0: Internal thread
U<=0: External thread
I: Maximum infeed – default: I is calculated from the thread pitch
and the thread depth
Further parameters G351
A:
Approach angle – default: 30°; Range: –60° < A < 60°
• A>0: Infeed from right thread flank
• A<0: Infeed from left thread flank
D: No. gears – Number of grooves – default: 1
J: Remaining cutting depth – default: 1/100 mm
E: Variable pitch (increases/reduces the pitch per revolution by E) –
default: 0
• “Cycle STOP“ only becomes effective at the end of a thread cut.
• The feed rate and spindle speed overrides are disabled during
execution of the cycle.
Longitudinal thread G350
Longitudinal thread G351