Siemens SINUMERIK 840D sl Operating Manual page 475

α1 = 360°
Input simple
For simple machining operations, you have the option to reduce the wide variety of parameters
to the most important parameters using the "Input" selection field. In this "Input simple" mode,
the hidden parameters are allocated a fixed value that cannot be adjusted.
If the workpiece programming requires it, you can display and change all of the parameters
using "Input complete".
Approach/retraction
1. At the height of the retraction plane, the tool approaches the center point of the semicircle
at the end of the groove at rapid traverse and adjusts to the safety distance.
2. It is then inserted into the workpiece at the machining feedrate, allowing for the maximum
Z direction infeed (for face machining), X direction infeed (for peripheral machining), and
the finishing allowance. Depending on the machining direction (up-cut or down-cut), the
circumferential groove is machined in a clockwise or counterclockwise direction.
3. When the first circumferential groove is finished, the tool moves to the retraction plane at
rapid traverse.
4. The next circumferential groove is approached along a straight line or circular path and
then machined.
5. The rapid traverse feedrate for positioning on a circular path is specified in a machine data
element.
Machining type
You can select the machining mode for milling the circumferential groove as follows:
● Roughing
During roughing, the individual planes of the groove are machined one after the other from
the center point of the semicircle at the end of the groove until depth Z1 is reached.
● Finishing
In "Finishing" mode, the edge is always machined first until depth Z1 is reached. The groove
edge is approached on the quadrant that joins the radius. In the last infeed, the base is
finished from the center point of the semicircle to the end of the groove.
Turning
Operating Manual, 05/2017, A5E40868721
Machine manufacturer
Various defined values can be pre-assigned using setting data.
Please refer to the machine manufacturer's specifications.
Programming technology functions (cycles)
10.4 Milling
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