Siemens SINUMERIK 840D sl Operating Manual page 436

Programming technology functions (cycles)
10.4 Milling
Parameter Description
Peripheral surface C: The positions refer to the reference point:
Y0 or C0 Reference point Y or reference point length polar
Z0 Reference point Z
X0 Cylinder diameter ∅
(only for ShopTurn)
Peripheral surface Y: The positions refer to the reference point:
C0 Positioning angle for machining surface
Y0 Reference point Y
Z0 Reference point Z
X0 Reference point X
(only for ShopTurn)
W Pocket width
L Pocket length
R Corner radius
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 ∇, ∇∇∇)
Insertion The following insertion modes can be selected – (only for ∇, ∇∇∇ or ∇∇∇ edge):
● Predrilled (only for G code)
● Vertical: Insert vertically at center of pocket
● Helical: Insert along helical path
● 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 eliminate the inclined insertion path.
436
- (only for ∇ and ∇∇∇)
With G0, the pocket center point is approached at the retraction plane level, and
then, from this position, also with G0, the axis travels to the reference point brought
forward by the safety clearance. The machining of the rectangular pocket is then
performed according to the selected insertion strategy, taking into account the
programmed blank dimensions.
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.
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.
mm or de‐
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Operating Manual, 05/2017, A5E40868721
Turning