5
ShopTurn Functions 08/2005
5.5 Millin
5
♥ Siemens AG, 2005. All rights reserved
5-240 SINUMERIK 840D sl Operation/Programming ShopTurn (BAT) – 08/2005 Edition
5.5.2 Circular pocket
The "Circular pocket" function is used when you want to mill any
circular pocket on the end face or peripheral surface.
The following machining methods are available:
Mill circular pocket from solid material.
Pre-drill circular pocket in the center first if, for example, the milling
cutter does not cut across center (program the drilling, circular
pocket and position program blocks one after another).
Approach/retraction
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.
Machining type
You can select the machining mode for milling the circular pocket as
follows:
Roughing
In "Roughing" mode, the individual planes of the pocket are
machined one after another from inside out until depth Z1 or X1 is
reached.
Finishing
In "Finishing" mode, the edge is always machined first. The pocket
edge is approached on the quadrant, which joins the pocket radius.
In the last infeed, the base is finished from the center out.
Edge finishing
Edge finishing is performed in the same way as finishing, except
that the last infeed (finish base) is omitted.
Chamfer
Chamfering involves edge breaking at the upper edge of the
pocket.
Pocket >
Circular
pocket
¾ Press the "Milling", "Pocket" and "Circular pocket" soft keys.
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