Siemens SINUMERIK 808D ADVANCED Programming And Operating Manual page 163

Parameter Data type
_STA REAL
_MID REAL
_MIDA REAL
_FDP REAL
_FALD REAL
_FFP1 REAL
_VARI INT
_FDP1 REAL
Function
Use CYCLE71 to mill any rectangular surface. The cycle differentiates between roughing (machining the surface in several
steps until reaching the final machining allowance) and finishing (milling the end face in one step). The maximum infeed in
width and depth can be specified.
The cycle operates without cutter radius compensation. The depth infeed is performed in the open.
See the following illustration for possible face milling strategies:
Sequence
Position reached prior to cycle start:
Starting position is any position from which the infeed point can be approached at the height of the retraction plane without
collision.
Programming and Operating Manual (Milling)
6FC5398-4DP10-0BA1, 01/2014
Description
Angle between the longitudinal axis of the rectangle and the first axis of the
plane (abscissa, enter without sign).
Range of values: 0° ≤ STA < 180°
Maximum infeed depth (enter without sign)
Maximum infeed width during solid machining in the plane as a value (enter
without sign)
Retraction travel in the finishing direction (incremental, enter without sign)
Finishing dimension in the depth (incremental, enter without sign)
Feedrate for surface machining
Machining type (enter without sign)
UNITS DIGIT
Values: 1 roughing, 2 finishing
TENS DIGIT:
Values:
1: parallel to the first axis of the plane, in one direction,
2: parallel to the second axis of the plane, in one direction,
3: parallel to the first axis of the plane, with alternating direction
4: parallel to the second axis of the plane, with alternating direction
Overrun travel in the direction of the plane infeed (incremental, enter without
sign)
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