Siemens SINUMERIK Series Operating Manual page 539

Parameter
Table
Selection - (not for table
"Without")
P
G
Machining
Infeed (only for ∇ and ∇
+ ∇∇∇)
Thread
X0
Z0
Z1
Milling
Operating Manual, 08/2018, 6FC5398-7CP41-0BA0
Description
Thread table selection:
● Without
● ISO metric
● Whitworth BSW
● Whitworth BSP
● UNC
Data, table value, e.g. M10, M12, M14, ...
Select the thread pitch/turns for table "Without" or specify the thread pitch/turns
corresponding to the selection in the thread table:
● Thread pitch in mm/revolution
● Thread pitch in inch/revolution
● Thread turns per inch
● Thread pitch in MODULUS
Change in thread pitch per revolution - (only for P = mm/rev or in/rev)
G = 0: The thread pitch P does not change.
G > 0: The thread pitch P increases by the value G per revolution.
G < 0: The thread pitch P decreases by the value G per revolution.
If the start and end pitch of the thread are known, the pitch change to be programmed
can be calculated as follows:
|P - P |
2 2
e
G = ----------------- [mm/rev
2 * Z
1
The meanings are as follows:
P : End pitch of thread [mm/rev]
e
P: Start pitch of thread [mm/rev]
Z : Thread length [mm]
1
A larger pitch results in a larger distance between the thread turns on the workpiece.
● ∇ (roughing)
● ∇∇∇ (finishing)
● ∇ + ∇∇∇ (roughing and finishing)
● Linear:
Infeed with constant cutting depth
● Degressive:
Infeed with constant cutting cross-section
● Internal thread
● External thread
Reference point X from thread table ∅ (abs)
Reference point Z (abs)
End point of the thread (abs) or thread length (inc)
Incremental dimensions: The sign is also evaluated.
Programming technological functions (cycles)
]
2
10.4 Turning - milling/turning machine
Unit
mm/rev
in/rev
turns/"
MODULUS
mm/rev
2
mm
mm
mm
539