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

10.4.7

Longitudinal groove (SLOT1)

Function
You can use the "Longitudinal groove" function to mill any longitudinal groove.
The following machining methods are available:
● Mill longitudinal groove 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.
● First predrill longitudinal groove if, for example, the milling cutter does not cut in the center
(for ShopTurn, program the drilling, longitudinal groove and position program blocks in
succession).
In this case, select the predrilling position corresponding to the "Insertion", "vertical"
parameter (see "Procedure").
Depending on the dimensions of the longitudinal slot in the workpiece drawing, you can
select a corresponding reference point for the longitudinal slot.
Clamping the spindle
For ShopTurn, the "Clamp spindle" function can be set up by the machine manufacturer.
Longitudinal slot with the width of the tool
When milling a longitudinal slot, which is located in parallel with the spindle axis, and which
should be machined with the width of the tool, then the clamping remains active after insertion
in order to achieve more accurate results.
The cycles identify this special case and do not cancel clamping after insertion if the following
secondary conditions are fulfilled.
After machining, the clamping in the cycles is canceled again.
General conditions
● Finishing longitudinal slot with width = tool diameter
● Roughing longitudinal slot with (width - 2 * finishing allowance) = tool diameter
Turning
Operating Manual, 05/2017, A5E40868721
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Programming technology functions (cycles)
10.4 Milling
465