Siemens SINUMERIK 840D sl Operating Manual page 227

No.
Function
The cycle is used for machining with a total infeed depth P3 <S_K> in infeed steps. The infeed
depths at the start P1 <S_I> and at the end P2 <S_J> can be different. There is a tangential
motion between the infeeds.
The positional data P1 to P4 can be negative or positive.
The specification of the infeed axis P8 <S_A1> and/or oscillating axis P9 <S_A2> are optional.
If one or both parameters are not specified, the cycle uses the first two geometry axes of the
channel.
If the sum of the infeed depth at the start P1 <S_I> and at the end P2 <S_J> is 0 or the total
infeed depth P3 <S_K> is 0, only a sparking-out stroke is performed.
Sequence
1. Start of the cycle at the current position of the oscillating axis.
2. Traversing of the infeed axis to the infeed depth at the start P1 <S_I> with the feedrate for
infeed P5 <S_R>.
3. Sparking out with the sparking-out time P7 <S_P>.
4. Traversing of the oscillating axis with the grinding width P4 <S_A> as travel path and the
feedrate for transverse infeed P6 <S_F>.
5. Traversing of the infeed axis to the infeed depth at the end P2 <S_J> with the feedrate for
infeed P5 <S_R>.
6. Sparking out with the sparking-out time P7 <S_P>.
7. Traversing of the oscillating axis with the grinding width P4 <S_A> as travel path to the
starting point and the feedrate for transverse infeed P6 <S_F>.
The sequence cannot be interrupted with a single block.
The sequence is repeated until the total infeed depth P3 <S_K> has been reached. The last
stroke is then distributed unevenly.
Grinding
Operating Manual, 05/2017, A5E40869190
Parameter
3
<S_K>
4
<S_A>
5
<S_R>
6
<S_F>
7
<S_P>
8
<S_A1>
9
<S_A2>
9.4 Oscillating cycles (CYCLE4071 ... CYCLE4079)
Data type Meaning
REAL Total infeed depth
REAL Grinding width
REAL Feedrate for infeed
REAL Feedrate for transverse infeed
REAL Sparking-out time
AXIS Infeed axis (optional)
AXIS Oscillating axis (optional)
Programming technology functions
227