Programming The Approach/Retraction Cycle - Siemens SINUMERIK 840D sl Operating Manual

Creating a ShopTurn program

7.16 Programming the approach/retraction cycle

7.16 Programming the approach/retraction cycle
If you wish to shorten the approach/retraction for a machining cycle or solve a complex
geometrical situation when approaching/retracting, you can generate a special cycle. In this
case, the approach/retraction strategy normally used is not taken into account.
You can insert the approach/retraction cycle between any machining step program blocks,
but not within linked program blocks.
Starting point
The starting point for the approach/retraction cycle is the safety clearance approached after
the last machining operation.
Tool change
If you want to perform a tool change, you can move the tool through a total of three positions
(P1 to P3) to the tool change point and through a maximum of three additional positions (P4
to P6) to the next starting point. If the tool does not need to be changed, however, you have
a total of six positions available for the approach to the next starting position.
If three or six 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.
See also
Machining cycle, approach/retraction (Page 229)
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CAUTION
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
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