Siemens SINUMERIK 840D sl Operating Manual page 224

Programming technology functions
9.4 Oscillating cycles (CYCLE4071 ... CYCLE4079)
Parameters
No.
Function
The cycle is used for the execution of <S_H> infeeds taking into account an external cancel
signal, for example. The infeed depth can be different at the start and at the end. The depth
infeed is cancelled when the cancel condition is satisfied. A complete stroke is always
performed after the cancellation of the depth infeed.
Sequence
1. Start of the cycle at the current position of the oscillating axis with infeed depth 0
2. Traversing of the oscillating axis with the grinding width P4 <S_W> as travel path and
feedrate for transverse infeed P6 <S_K> with continuous increase in the infeed depth up
to the infeed depth at the start P2 <S_A>.
3. Sparking out with the sparking-out time P5 <S_U>.
4. Traversing of the oscillating axis with the grinding width P4 <S_W> as travel path to the
starting point and feedrate for transverse infeed P6 <S_K> with continuous increase in the
infeed depth up to the infeed depth at the end P3 <S_B>.
5. Sparking out with the sparking-out time P5 <S_U>.
6. Without cancellation: The sequence described above is repeated until the number of
programmed repetitions P7 (<S_H>) is reached.
With cancellation: The depth infeed is cancelled. The machining is stopped when the next
start point is reached.
The sequence cannot be interrupted by a single block.
224
Parameter
1
<S_GAUGE>
2
<S_A>
3
<S_B>
4
<S_W>
5
<S_U>
6
<S_K>
7
<S_H>
8
<S_A1>
9
<S_A2>
Data type Meaning
STRING Cancel conditions for infeed:
1. Number of a rapid input
2. Logical expression
REAL Infeed depth at the start
REAL Infeed depth at the end
REAL Grinding width
REAL Sparking-out time
REAL Feedrate for transverse infeed
INT Number of repetitions
AXIS Infeed axis (optional) or 1st geometry axis
AXIS Oscillating axis (optional) or 2nd geometry axis
Operating Manual, 05/2017, A5E40869190
Grinding