Siemens SINUMERIK 828D - Page 375

Programming technology functions (cycles)
9.2 Rotate
Turning
Operating Manual, 01/2015, 6FC5398-8CP40-5BA2
375
Parameter
Description
Unit
D0 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.
mm
D1 or ND
(only for ∇ and
∇ + ∇∇∇)
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.
mm
U
Finishing allowance in X and Z – (only for ∇ and ∇ + ∇∇∇)
mm
NN
Number of noncuts - (only for ∇∇∇ and ∇ + ∇∇∇)
VR
Return distance (inc)
mm
Multiple threads
No
α0
Starting angle offset
Degrees
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.
mm
Machining:
• Complete, or
• from turn N1
N1 (1...4) start thread N1 = 1...N
or
• only thread NX
NX (1...4) 1 from N threads
Parameter "Tapered thread" in the "Input simple" mode
G code program parameters
ShopTurn program parameters
Input
• simple
T
Tool name
D
Cutting edge number
S / V
Spindle speed or constant cut-
ting rate
rpm
m/min