Siemens SINUMERIK 840D sl Operating Manual page 532

Programming technology functions (cycles)
10.5 Contour milling
Parameter Description
Machining The following machining operations can be selected:
● ∇ (roughing)
● ∇∇∇ base (base finishing)
● ∇∇∇ edge (edge finishing)
● Chamfering
Z0 Reference point in the tool axis Z
Z1 Pocket depth (abs) or depth referred to Z0 (inc)
CP Positioning angle for machining area - (only for machining surface, face Y)
(only for ShopTurn)
Angle CP does not have any effect on the machining position in relation to the workpiece.
It is only used to position the workpiece with the rotary axis C in such a way that ma‐
chining is possible on the machine.
C0 Positioning angle for machining area - (only for machining surface, peripheral surface
(only for ShopTurn) Y)
DXY
● Maximum plane infeed
● Maximum plane infeed as a percentage of the milling cutter diameter
DZ Maximum depth infeed
UXY Finishing allowance, plane
UZ Finishing allowance, depth
Insertion The following insertion modes can be selected – (only for ∇, ∇∇∇ base or ∇∇∇ edge):
● Vertical
● Helical
● Oscillation
FZ (only for Depth infeed rate – (only for vertical insertion and ∇)
ShopTurn)
FZ (only for G code) Depth infeed rate – (only for vertical insertion and ∇)
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.
FS Chamfer width for chamfering (inc) - (for chamfering only)
ZFS Insertion depth of tool tip (abs or inc) - (for chamfering only)
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The calculated actual 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.
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.
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.
mm
mm
Degrees
Degrees
mm
%
mm
mm
mm
mm/min
mm/tooth
*
mm/rev
mm
Degrees
mm
mm
Operating Manual, 05/2017, A5E40868721
Turning