Siemens SINUMERIK 840D sl Operating Manual page 435

Parameter
rev
NN
VR
Multiple threads
Parameters, G code program (thread, conical)
PL Machining plane
Parameter
P
Milling
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Description
Finishing allowance in X and Z – (only for ∇ and ∇ + ∇∇∇)
Number of noncuts - (only for ∇∇∇ and ∇ + ∇∇∇)
Return distance (inc)
No
α0 Starting angle offset
Yes
N Number of thread turns
The thread turns are distributed evenly across the periphery of the
turned part; the 1st thread turn is always located at 0°.
DA Thread changeover depth (inc)
First machine all thread turns sequentially to thread changeover
depth DA, then machine all thread turns sequentially to depth 2 ·
DA, etc. until the final depth is reached.
DA = 0: Thread changeover depth is not taken into account, i.e.
finish machining each thread before starting the next thread.
Machining:
Complete, or
•
from turn N1
•
N1 (1...4) start thread N1 = 1...N
only thread NX
•
NX (1...4) 1 from N threads
Description
Thread pitch in mm/revolution
•
Thread pitch in inch/revolution
•
Thread turns per inch
•
Thread pitch in MODULUS
•
Programming technological functions (cycles)
8.4 Turning - only for G code programs
or
Unit
mm
mm
Degrees
mm
Unit
mm/rev
in/rev
turns/"
MODULUS
435