Machining With The Counterspindle - Siemens sinumerik 840D sl Operating Manual

Programming technology functions (cycles)
8.7 Further cycles and functions ShopTurn
Procedure
Parameters
Direction of rotation
α
F
8.7.17

Machining with the counterspindle

If your lathe has a counterspindle, you can machine workpieces using turning, drilling and
milling functions on the front and rear faces without reclamping the workpiece manually.
Before machining commences on the rear face, the counterspindle must grip the workpiece,
remove it from the main spindle and move it to the new machining position. You can program
these operations with the "Counterspindle" function.
Operations
The following steps are available to program the operations:
● Gripping: Gripping the workpiece with the counterspindle (with limit stop if necessary)
● Withdrawing: Withdrawing the workpiece out of the main spindle with the counterspindle
● Rear side: Moving the workpiece with the counterspindle to the new machining position
452
1. The ShopTurn program to be processed has been created and you
are in the editor.
2. Press the menu forward key and the "Straight Circle" softkey.
3. Press the "Polar" and "Circle Polar" softkeys.
Description
Direction of rotation in which the tool travels from the circle starting point to the
circle end point
Direction of rotation clockwise (right)
Direction of rotation counterclockwise (left)
Polar angle to the pole, end point (abs) or
Polar angle change to the pole, end point (inc)
The sign specifies the direction.
Machining feedrate
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Unit
Degrees
mm/rev
mm/min
mm/tooth
Turning