Siemens SINUMERIK 840D sl Operating Manual page 451

Parameter Description
Insertion The following insertion modes can be selected – (only for ∇, ∇∇∇ base or ∇∇∇ edge):
● Vertical insertion
The calculated current infeed depth is executed at the calculated position for
"automatic" starting point – or at the specified position for "manual" starting point.
Note:
This setting can be used only if the cutter can cut across center or if the pocket has
been predrilled.
● Helical insertion
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 eliminate the inclined insertion path.
● Oscillating insertion
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 eliminate the inclined insertion path.
FZ (only for Depth infeed rate – (only for perpendicular insertion and ∇)
ShopMill)
FZ (only for G Depth infeed rate – (only for perpendicular insertion and ∇)
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 cutter radius; otherwise, material will remain.
EW Maximum insertion angle – (for insertion with oscillation only)
Lift mode Lift mode before new infeed - (only for ∇, ∇∇∇ base or ∇∇∇ edge)
If the machining operation requires several points of insertion, the retraction height to
which the tool is retracted, is selected as follows:
● To retraction plane
● Z0 + safety clearance
If there are no elements larger than Z0 in the pocket area, "Z0 + safety clearance" can
be selected as the lift mode.
FS Chamfer width for chamfering - (only for chamfering machining)
ZFS Insertion depth of tool tip (abs or inc) - (for machining only)
* Unit of feedrate as programmed before the cycle call
Note
When input manually, the starting point can also be located outside the pocket. This can be
useful, for example, when machining a pocket which is open on one side. The machining
operation then begins without insertion with a linear movement into the open side of the pocket.
Milling
Operating Manual, 05/2017, A5E40868956
Programming technological functions (cycles)
10.3 Contour milling
Unit
mm/min
mm/tooth
*
mm/rev
mm
Degrees
mm
mm
mm
mm
451