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

Working with a B axis (only 840D sl)

17.5 Approach/retraction

17.5 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 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.
The 1st, 3rd, 4th 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 six motion blocks.
The numbers (1 - 6) represent the processing sequence.
Note
Programming additional positions
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.
NOTICE
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.
Parameter
F1
X1
Z1
Y1
β2
γ2
Tracking
F3
882
Description
Feedrate to approach the first position
Alternatively, rapid traverse
1. position (inc or ∅ abs)
1. position (inc or ∅ abs)
Retraction to safety clearance
Beta angle for 1st swivel movement
Gamma angle for 1st swivel movement
The position of the tool tip is maintained during swiveling.
Please refer to the machine manufacturer's instructions.
Feedrate to approach the third position
Alternatively, rapid traverse
Operating Manual, 06/2019, A5E44903486B AB
Unit
mm/min
mm
mm
mm
Degrees
Degrees
mm/min
Turning