Siemens SINUMERIK 840D sl Operation/Programming Manual page 236

ShopTurn Functions
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5.5 Milling
5.5.1 Rectangular pocket
Approach/retraction
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If you are to decide the types of machining for which the spindle is to
be clamped, the following applies:
You should note that when machining in planes End face/End face C
and Peripheral surface/Peripheral surface C, clamping is automatically
released after insertion. When machining in planes End face Y and
Peripheral surface Y, on the other hand, clamping is modal, i.e. it
remains activated until the machining plane is changed or clamping is
deselected in the "Straight circle"
The "Rectangular pocket" function is used when you want to mill any
rectangular pocket on the end face or peripheral surface.
The following machining methods are available:

Mill rectangular pocket from solid material.

Pre-drill rectangular pocket in the center first if, for example, the
milling cutter does not cut across center (program the drilling,
rectangular pocket and position program blocks one after another).
1. The tool approaches the center point of the pocket at rapid
traverse at the height of the retraction plane and adjusts to the
safety clearance.
2. The tool is inserted into the material according to the chosen
strategy.
3. The pocket is always machined with the chosen machining type
from inside out.
4. The tool moves back to the safety clearance at rapid traverse.
SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition
08/2005
"Tool" menu.
♥ Siemens AG, 2005. All rights reserved
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