Siemens sinumerik 840D sl Operating Manual page 339

Parameters Description
Insertion The following insertion modes can be selected – (only for ∇, ∇∇∇ or ∇∇∇ edge):
Predrilled: (only for G code)

With G0, the pocket center point is approached at the retraction plane level, and
then, from this position, also with G0, the axis travels to the reference point brought
forward by the safety clearance. The machining of the rectangular pocket is then
performed according to the selected insertion strategy, taking into account the
programmed blank dimensions.
Perpendicular: Insert vertically at center of pocket

The tool executes the calculated actual depth infeed at the pocket center in a single
block. This setting can be used only if the cutter can cut across center or if the
pocket has been predrilled.
Helical: Insert along helical path

The cutter center point traverses along the helical path determined by the radius
and depth per revolution (helical path). If the depth for one infeed has been
reached, a full-circle motion is executed to remove the slope caused by insertion.
Oscillating: Insert with oscillation along center axis of rectangular pocket(only for G

code)
The cutter center point oscillates back and forth along a linear path until it reaches
the depth infeed. When the depth has been reached, the path is traversed again
without depth infeed in order to remove the slope caused by insertion.
FZ Depth infeed rate
(only for G code)
FZ or Depth infeed rate - (only for insertion, predrilled and perpendicular)
FX (FZ only for machining surface, face C/Y or FX for peripheral surface C/Y)
(only for
ShopTurn)
EP Maximum pitch of helix – (for helical insertion only)
ER Radius of helix – (for helical insertion only)
The radius cannot be any larger than the milling cutter radius; otherwise, material will
remain.
EW Maximum insertion angle – (for insertion with oscillation only)
Complete machining
Solid machining 
(for roughing only)
The rectangular pocket is milled from the solid material.
Remachining

The size of any existing smaller rectangular pocket or hole is increased in several
axes. You must program parameters AZ, W1 and L1 for this purpose.
AZ Depth of premachining – (for remachining only)
W1 Width of premachining – (for remachining only)
L1 Length of premachining – (for remachining only)
FS Chamfer width for chamfering - (for chamfering only)
ZFS or XFS Insertion depth of tool tip (abs or inc) – (for chamfering only)
(ZFS for machining surface, face C/Y or XFS for peripheral surface C/Y)
Turning
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Programming technology functions (cycles)
8.4 Milling
Unit
mm/min
mm/min
mm/tooth
mm/rev
mm
Degrees
mm
mm
mm
mm
mm
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