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

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.
● Predrill rectangular pocket in the center first if, for example, the milling cutter does not cut
● Machine pre-machined rectangular pocket (see "Solid machining" parameter):
Depending on the dimensions of the rectangular pocket in the workpiece drawing, you can
select a corresponding reference point for the rectangular pocket.
Note
Predrilling
If the programmed input parameters, deviating from Pocket3, result in a longitudinal slot or a
longitudinal hole, then in the cycle, from Pocket3, the corresponding cycle to machine slots
(Slot1 or Longhole) is called. In these cases, the insertion points can deviate from the pocket
center point.
Note this special feature if you wish to predrill.
Clamping the spindle
For ShopTurn, the "Clamp spindle" function can be set up by the machine manufacturer.
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.
Turning
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
in the center (program the drilling, rectangular pocket and position program blocks in
succession).
– Complete machining
– Post machining
Machine manufacturer
Please refer to the machine manufacturer's specifications.
height of the retraction plane and adjusts to the safety clearance.
out.
Programming technology functions (cycles)
8.4 Milling
381