Circumferential Groove (Slot2) - Siemens SINUMERIK 840D sl Operating Manual

Programming technological functions (cycles)
8.2 Milling
8.2.8

Circumferential groove (SLOT2)

Function
You can mill one or several circumferential slots of equal size on a full or pitch circle with the
"circumferential slot" cycle.
Tool size
Please note that there is a minimum size for the milling cutter used to machine the
circumferential slot:
● Roughing:
● Finishing:
● Edge finishing:
Annular groove
To create an annular groove, you must enter the following values for the "Number N" and
"Aperture angle α1" parameters:
N = 1
α1 = 360°
Approach/retraction
1. The tool approaches the center point of the semicircle at the end of the slot at rapid
2. Then, the tool enters the workpiece at machining infeed (taking into consideration the
3. When the first circumferential slot is finished, the tool moves to the retraction plane at
4. The next circumferential slot is approached along a straight line or circular path and then
5. The tool moves back to the safety clearance at rapid traverse.
360
1⁄2 groove width W – finishing allowance UXY ≤ milling cutter diameter
1⁄2 groove width W ≤ milling cutter diameter
Finishing allowance UXY ≤ milling cutter diameter
traverse at the height of the retraction plane and adjusts to the safety clearance.
maximum infeed in the Z direction and the finishing allowance). The circumferential slot is
machined in the programmed machining direction (up-cut or down-cut) in a clockwise or
counterclockwise direction.
rapid traverse.
machined.
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
Milling