Approach/Retraction - Siemens sinumerik 840D sl Operating Manual

Working with a B axis

12.5 Approach/retraction

12.5 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.
Parameter
F1
X1
Z1
Y1
β2
γ2
Tracking
F3
X3
526
CAUTION
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
3. position (inc or ∅ abs)
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Unit
mm/min
mm
mm
mm
Degrees
Degrees
mm/min
mm
Turning