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

Creating a ShopTurn program

9.16 Programming the approach/retraction cycle

9.16 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 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. If the tool does not need to be changed, however, you have a total of 6
positions available for the approach to the next starting position.
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.
Risk of collision
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 292)
Procedure
Parameters
F1
X1
Z1
322
CAUTION
Press the menu forward key and the "Straight Circle" softkey.
Press the "Approach/retract" softkey.
Description
Feedrate to approach the first position
Alternatively, rapid traverse
1st position ∅ (abs) or 1st position (inc)
1st position (abs or inc)
Operating Manual, 06/2019, A5E44903486B AB
Unit
mm/min
mm
mm
Turning