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5
Turning with Cycles
5.2 Turning cycles in CYCLE mode
Parameter for multiple thread
Q (alternative)
Example showing how to
parameterize a multi-turn
thread
L
N
P
A
5-86
Selection of parameters via Q and soft key "Alternat.".
Number of turns (max. 6)
The number of threads for a multiple-start thread is set in para-
meter L .
The threads are evenly distributed along the circumference of the
turned part; the 1st thread start is always at 0°.
Should you require a multi-turn thread with a different start point on
the circumference, then the cycle must be called individually for each
thread when the appropriate starting point offset Q is programmed.
1 of L turns.
• Machine all thread starts:
• Machine only this thread start: Value = 1 ... L
First turn P = 1 ... L
If P > 1, the threads that to be machined beforehand are omitted!
Turn-change depth (enter without sign)
In the case of deep threads, specify the infeed depth of the thread
before each thread change with A . If the depth at which turn changes
is to be ignored, simply enter 0.
SINUMERIK 840D/810D Operator's Guide ManualTurn (BAM) – 08.02 Edition
08.02
Value = 0
© Siemens AG, 2002. All rights reserved
5

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