Siemens SINUMERIK 840D sl Operating Manual page 241

Machining type
You can select the machining mode for milling the circumferential groove as follows:
● Roughing
● Finishing
● Roughing and finishing
● Finishing of edge
● Chamfering
Approach/retraction
1. At the height of the retraction plane, the tool approaches the center point of the semicircle
2. It is then inserted into the workpiece at the machining feedrate, allowing for the maximum
3. When the first circumferential groove is finished, the tool moves to the retraction plane at
4. The next circumferential groove is approached along a straight line or circular path and
5. The rapid traverse feedrate for positioning on a circular path is specified in a machine
HMI sl Turning
Operating Manual, 01/2008, 6FC5398-7AP10-0BA0
During roughing, the individual planes of the groove are machined one after the other
from center point of the semicircle at the end of the groove until depth Z1 is reached.
In "Finishing" mode, the edge is always machined first until depth Z1 is reached. The
groove edge is approached on the quadrant, which joins the radius. In the last infeed, the
base is finished from the center point of the semicircle to the end of the groove.
Roughing and finishing of a groove is performed in succession.
Edge finishing is performed in the same way as finishing, except that the last infeed
(finish base) is omitted.
Chamfering involves edge breaking at the upper edge of the circumferential groove.
at the end of the groove at rapid traverse and adjusts to the safety distance.
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.
rapid traverse.
then machined.
data element.
Programming a cycle
4.7 Milling
241