Longitudinal Groove (Slot1) - Siemens SINUMERIK 840D sl Operating Manual

Programming technological functions (cycles)
10.2 Milling
10.2.7

Longitudinal groove (SLOT1)

Function
You can mill any longitudinal slot with the "longitudinal slot" milling function.
The following machining methods are available:
● Mill longitudinal slot from solid material.
Depending on the dimensions of the longitudinal slot in the workpiece drawing, you can
select a corresponding reference point for the longitudinal slot.
● Predrill longitudinal slot first if, for example, the milling cutter does not cut in the center (e.g.
for ShopMill, program the drilling, rectangular pocket and position program blocks in
succession).
In this case, select the predrilling position corresponding to the "Insertion", "Vertical"
parameter (see "Procedure").
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. The tool moves at rapid traverse to the retraction plane and infeeds at safety clearance.
2. The tool is inserted into the material according to the chosen strategy.
3. The longitudinal slot is always machined with the chosen machining type from inside out.
4. The tool moves back to the safety clearance at rapid traverse.
Machining type
You can select the machining mode for milling the longitudinal slot as follows:
● Roughing
During roughing, the individual planes of the slot are machined one after the other until
depth Z1 is reached.
● Finishing
During finishing, the edge is always machined first. The slot edge is approached on the
quadrant that joins the corner radius. In the last infeed, the base is finished from the center
out.
398
Machine manufacturer
Various defined values can be pre-assigned using setting data.
Please refer to the machine manufacturer's specifications.
Operating Manual, 05/2017, A5E40868956
Milling