Approach/Retraction - Siemens SINUMERIK 840D sl Operating Manual

Working with a B axis

14.5 Approach/retraction

14.5 Approach/retraction
If you want to optimize approach/return for swiveling with the B axis, you can create a
special cycle that ignores the automatic approach/retraction strategy.
You can insert the approach/retraction cycle between any machining step program blocks,
but not within linked program blocks.
Sequence
The starting point for the approach/retraction cycle is the safety clearance approached after
the last machining operation.
If you want to perform a tool change, you can move the tool through a total of 3 positions (P1
to P3) to the tool change point and through a maximum of 3 additional positions (P4 to P6) to
the next starting point.
The 1st, 3rd, and 6th positions move the linear axes, while the 2nd and 5th positions move
the rotary axes.
If no tool change is needed you can generate no more than 6 motion blocks.
The numbers (1 – 6) represent the processing sequence.
Note
Programming additional positions
If 3 or 6 positions are not sufficient for the approach/retraction, you can call the cycle several
times in succession to program further positions.
Note that the tool will move from the last position programmed in the approach/retraction
cycle directly to the starting point for the next machining operation.
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CAUTION
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
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