Rectangular Pocket (Pocket3) - Siemens sinumerik 840D sl Operating Manual

Programming technology functions (cycles)
8.4 Milling
Note
The same finishing allowance must be entered for both roughing and finishing. The finishing
allowance is used to position the tool for retraction.
8.4.2

Rectangular pocket (POCKET3)

Function
You can use the "Mill rectangular pocket" cycle to mill any rectangular pockets on the face or
peripheral surface. .
The following machining variants are available:
● Mill rectangular pocket from solid material.
● Pre-drill rectangular pocket in the center first if, for example, the milling cutter does not
● Machine pre-machined rectangular pocket (see "Solid machining" parameter).
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 method
● Roughing
● Finishing
● Edge finishing
336
cut in the center (program the drilling, rectangular pocket and position program blocks in
succession).
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.
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Turning