Thread Re-Machining - Siemens SINUMERIK 840D sl Operation/Programming Manual

08/2005
5

5.3.6 Thread re-machining

Jog
Sync.
Point
Cycle Start
Cycle Start
♥ Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition
The "Thread re-machining" function is used if you want to machine a
thread again, e.g. if the tool cutting tip breaks while the thread is being
cut.
ShopTurn takes into account the angular offset of a thread that occurs
due to reclamping the workpiece.
Switch the spindle off.
Select "Machine Manual" mode.
Thread the thread cutting tool into the thread groove.
Press the "Turning" and "Thread" soft keys.
Thread >
Press the "Sync. Point" soft key when the thread cutting tool is
exactly in the thread groove.
Press the "OK" softkey.
Enter the value 0 in parameter field "Q" (starting angle offset).
Press the "Accept" softkey.
Move the thread cutting tool back until the reference point (X0, Z0)
can be reached without a collision.
Load a program in "Machine Auto" mode (see Section "Start/Stop
the program").
Place the cursor on the thread cutting program block.
Press the "Block search" and "Start search run" softkeys.
Start
search run
Press the "Cycle Start" key.
ShopTurn sets all the necessary parameters.
Press the "Cycle Start" key again.
The new start position is approached and re-machining of the thread
starts. The angular offset is taken into account.
ShopTurn Functions
5
5.3 Turning
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