Siemens sinumerik 840D sl Operating Manual page 403

Parameters Description
Insertion The following insertion modes can be selected – (only for ∇ or ∇∇∇ base):
Vertical

Insert vertically in 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

Insertion 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.
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 (only for Depth infeed rate - (for perpendicular insertion only)
ShopTurn)
FZ (only for G Depth infeed rate - (for perpendicular insertion only)
code)
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)
Lift mode Lift mode before new infeed
If the machining operation requires several points of insertion, the retraction height can
be programmed:
to RP

Z0 + safety clearance - (only for G code and ShopTurn, machining surface, face

C/Y/B) or
X0 + safety clearance - (only for ShopTurn, machining surface, peripheral surface

C/Y)
On making the transition to the next insertion point, the tool returns to this height. If
there are no elements larger than Z0 (X0) in the pocket area, then Z0 (X0) + safety
clearance can be programmed as the lift mode.
FS Chamfer width for chamfering - (only for chamfering machining)
ZFS Insertion depth of tool tip (abs or inc) - (for chamfering machining only)
Turning
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Programming technology functions (cycles)
8.5 Contour milling
Unit
mm/min
mm/tooth
mm/min
mm/rev
mm
Degrees
mm
mm
mm
mm
mm
403