Open Groove (Cycle899) - Siemens SINUMERIK 840D sl Operating Manual

Programming technological functions (cycles)
8.2 Milling
Parameter Description
FS Chamfer width for chamfering (inc) - (for chamfering only),
ZFS Insertion depth of tool tip (abs or inc) - (for chamfering only),
UXY Plane finishing allowance - (only for ∇, ∇∇∇ and ∇∇∇ edge)
Positioning Positioning motion between the grooves:
Straight line:
•
Next position is approached linearly at rapid traverse.
Circular:
•
Next position is approached along a circular path at the feedrate defined in the
machine data.
* Unit of feedrate as programmed before the cycle call
8.2.9

Open groove (CYCLE899)

Function
Use the "Open slot" function if you want to machine open slots.
For roughing, you can choose between the following machining strategies, depending on
your workpiece and machine properties.
● Vortex milling
● Plunge cutting
The following machining types are available to completely machine the slot:
● Roughing
● Rough-finishing
● Finishing
● Base finishing
● Edge finishing
● Chamfering
Vortex milling
Particularly where hardened materials are concerned, this process is used for roughing and
contour machining using coated VHM milling cutters.
Vortex milling is the preferred technique for HSC roughing, as it ensures that the tool is
never completely inserted. This means that the set overlap is precisely maintained.
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Operating Manual, 09/2011, 6FC5398-7CP40-2BA0
Unit
mm
mm
mm
Milling