Siemens SINUMERIK 828D Operating Manual page 375

Parameter
D0
D1 or ND
(only for ∇ and
∇ + ∇∇∇)
U
NN
VR
Multiple threads
Parameter "Tapered thread" in the "Input simple" mode
G code program parameters
Input
Turning
Operating Manual, 01/2015, 6FC5398-8CP40-5BA2
Description
Initial plunge depth – (only for ∇ and ∇ + ∇∇∇ under "Manual Machine")
If you want to rework some threads, input the initial plunge depth D0 (inc.). This is
the depth that was reached during a previous machining.
By inputting the plunge depth, you avoid unnecessary idle cuts when reworking
the threads.
First infeed depth or number of roughing cuts
The respective value is displayed when you switch between the number of rough-
ing cuts and the first infeed.
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
simple
•
Programming technology functions (cycles)
or
ShopTurn program parameters
T Tool name
D Cutting edge number
S / V Spindle speed or constant cut-
ting rate
9.2 Rotate
Unit
mm
mm
mm
mm
Degrees
mm
rpm
m/min
375