Siemens SINUMERIK 840D sl Operating Manual page 390

Programming technology functions (cycles)
8.4 Milling
Clamping the spindle
For ShopTurn, the "Clamp spindle" function can be set up by the machine manufacturer.
See also
Clamping the spindle (Page 234)
Approach/retraction
1. The tool approaches the center point of the rectangular pocket in rapid traverse at the
2. The tool is inserted into the material according to the chosen strategy.
3. The rectangular pocket is always machined with the chosen machining type from inside
4. The tool moves back to the safety clearance at rapid traverse.
Machining type
● Roughing
● Finishing
● Edge finishing
● Chamfering
390
Machine manufacturer
Please refer to the machine manufacturer's specifications.
height of the retraction plane and adjusts to the safety clearance.
out.
Roughing involves machining the individual planes of the pocket one after the other from
the center out, until depth Z1 or X1 is reached.
During finishing, the edge is always machined first. The pocket edge is approached on
the quadrant that joins the corner radius. During the last infeed, the base is finished from
the center out.
Edge finishing is performed in the same way as finishing, except that the last infeed (base
finishing) is omitted.
Chamfering involves edge breaking at the upper edge of the rectangular pocket.
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Turning