Siemens SINUMERIK 840D sl Operation/Programming Manual page 204

ShopTurn Functions
5
5.3 Turning
Thread
long.
-or-
-or-
Parameters
T, D, S, V See Sec. "Creating program blocks".
P Pitch
G Pitch change – only for P= mm/rev or inch/rev
G = 0
G > 0
G < 0
If the start and end pitch of the thread are known, the pitch change to be
programmed can be calculated as follows:
G = ....
The identifiers have the following meanings:
P
P
Z
A larger pitch results in a larger distance between the threads on the workpieces.
5-204
6. The tool moves back to the return plane at rapid traverse.
Thread longitudinal
Thread machining can be stopped at any time thanks to the "Quick-
raise" function. It ensures that the tool does not damage the thread
groove when raised.
Press the "Turning" and "Thread" soft keys.
Thread >
Press the "Thread long.", "Thread cone" or "Thread face" soft key.
Thread
cone
Thread
face
The thread pitch P does not change.
The thread pitch P increases by the value G per revolution.
The thread pitch P decreases by the value G per revolution.
|P |
2 2
- P
e
. 2
[mm/rev ]
2*Z
1
End pitch of thread [mm/rev]
e
Start pitch of thread [mm/rev]
Thread length [mm]
1
Description
SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition
08/2005
5
Unit
mm/rev
in/rev
Turns / "
MODULE
♥ Siemens AG, 2005. All rights reserved.