Siemens SINUMERIK 840D sl Operating Manual page 384

Programming technological functions (cycles)
10.2 Milling
Parameter Description
Machining The following machining operations can be selected:
● ∇ (roughing)
● ∇∇∇ (finishing)
● ∇∇∇ edge (edge finishing)
● Chamfering
Machining type
● Plane-by-plane
● Helical
The positions refer to the reference point:
X0 Reference point X – (single position only)
Y0 Reference point Y – (single position only)
Z0 Reference point Z – (only single position and G Code position pattern)
∅ Diameter of pocket
Z1 Depth referred to Z0 (inc) or pocket depth (abs) - (only for ∇, ∇∇∇ or ∇∇∇ edge)
DXY
● Maximum plane infeed
● Maximum plane infeed as a percentage of the milling cutter diameter
DZ Maximum depth infeed – (only for ∇, ∇∇∇ or ∇∇∇ edge)
UXY Plane finishing allowance – (only for ∇, ∇∇∇ or ∇∇∇ edge)
UZ Depth finishing allowance – (only for ∇ or ∇∇∇)
Insertion Various insertion modes can be selected – (only for plane-by-plane machining method
and for ∇, ∇∇∇ and ∇∇∇ edge):
● Predrilled (only for G code)
● Perpendicular: Insert vertically at the center of pocket
● Helical: Insert along helical path
FZ Depth infeed rate – (only for vertical insertion)
(only for G code)
FZ Depth infeed rate – (only for vertical insertion)
(only for ShopMill)
EP Maximum pitch of helix - (for helical insertion only)
The helix pitch may be lower due to the geometrical situation.
384
Machine circular pocket plane-by-plane
Machine circular pocket using helical type
- (only for ∇ and ∇∇∇)
The tool executes the calculated depth infeed vertically at the center of the pocket.
Feedrate: Infeed rate as programmed under FZ
The cutter center point traverses along the helical path determined by the radius and
depth per revolution. If the depth for one infeed has been reached, a full circle motion
is executed to eliminate the inclined insertion path.
Feedrate: Machining feedrate
Note: The vertical insertion into pocket center method can be used only if the tool
can cut across center or if the workpiece has been predrilled.
mm
mm
mm
mm
mm
mm
%
mm
mm
mm
*
mm/min
mm/tooth
mm/rev
Operating Manual, 05/2017, A5E40868956
Milling