Siemens SINUMERIK 840D sl Operating Manual page 467

Parameter Description
Starting point
Manual

Starting point is entered
Automatic

Starting point is automatically calculated
XS Starting point X - (only for "manual" starting point)
YS Starting point X - (only for "manual" starting point)
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

Insertion along a 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 insertion

Oscillating insertion at the center axis of the 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 vertical insertion only)
ShopTurn)
FZ (only for G Depth infeed rate – (for vertical 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 Note:
During insertion with oscillation, the message "Ramp path too short" will appear if the
tool is less than the milling cutter diameter away from the insertion point along the
ramp. If this occurs, please reduce the angle of insertion.
Lift mode Lift mode before new infeed
If the machining operation requires several points of insertion, the retraction height can
be programmed:
To retraction plane

Z0 + safety clearance

When 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.
Turning
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Programming technology functions (cycles)
8.5 Contour milling
Unit
mm
mm
mm/min
mm/tooth
mm/min
mm/rev
mm
Degrees
mm
mm
467