Siemens SINUMERIK 840D sl Operating Manual page 446

Programming technology functions (cycles)
10.4 Milling
Parameter Description
Insertion The following insertion modes can be selected – (only for plane-by-plane machining
method and for ∇, ∇∇∇ or ∇∇∇ edge):
● Predrilled (only for G code)
● Vertical: Insert vertically at center of pocket
● Helical: Insert along helical path
Clamp/release spindle (only for end face C/peripheral surface C, if inserted vertically)
The function must be set up by the machine manufacturer
(only for ShopTurn)
FZ Depth infeed rate – (for vertical insertion only)
(only for G code)
FZ Depth infeed rate – (for vertical insertion only)
(only for ShopTurn)
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.
FS Chamfer width for chamfering - (for chamfering only)
ZFS Insertion depth of tool tip (abs or inc) - (for chamfering only)
* Unit of feedrate as programmed before the cycle call
Hidden parameters
The following parameters are hidden. They are pre-assigned fixed values or values that can
be adjusted using setting data.
Parameter Description
PL (only for G code) Machining plane
SC (only for G Safety clearance
code)
Machining Mill circular pocket at the programmed position (X0, Y0, Z0).
position
Solid machining The rectangular pocket is milled from the solid material - (only
for roughing)
446
The tool executes the calculated 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.
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.
Value Can be set in SD
Defined in MD
52005
1 mm
Single posi‐
tion
Complete
machining
Operating Manual, 05/2017, A5E40868721
*
mm/min
mm/tooth
mm/rev
mm
mm
mm
x
Turning