Plunge-Turning (Cycle952) - Siemens sinumerik 840D sl Operating Manual

Programming technology functions (cycles)
8.3 Contour turning
8.3.11

Plunge-turning (CYCLE952)

Function
Using the "Plunge turning" function, you can machine any shape of groove.
Contrary to grooving, the plunge turning function removes material on the sides after the
groove has been machined in order to reduce machining time. Contrary to stock removal, the
plunge turning function allows you to machine contours that the tool must enter vertically.
You will need a special tool for plunge turning. Before you program the "Plunge turning"
cycle, you must define the contour.
Blank
With plunge turning, ShopTurn can start from a blank that is defined as a cylinder, an
allowance on the finished-part contour or any unmachined-part contour.
Set machining area limits
If, for example, you want to machine a certain area of the contour with a different tool, you
can set machining area limits so that machining only takes place in the area of the contour
you have selected.
Feedrate interruption
To prevent the occurrence of excessively long chips during machining, you can program a
feedrate interruption.
Machining type
You can freely select the machining type (roughing or finishing).
For more detailed information, please refer to section "Stock removal".
Procedure
328
1. The part program or ShopTurn program to be processed has been
created and you are in the editor.
2. Press the "Contour turning" softkey.
3. Press the "Plunge turning" softkey.
The "Plunge turning" input window opens.
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Turning