Groove - Cycle930 - Siemens SINUMERIK 840D sl Operating Manual

4.5.3

Groove - CYCLE930

Function
You can use the "Groove" cycle to manufacture symmetrical and asymmetrical grooves on
any straight contour elements.
You can machine outer or inner grooves in the longitudinal or transverse directions. Use the
"Groove width" and "Groove depth" parameters to determine the shape of the groove. If a
groove is wider than the active tool, it is machined in several cuts. The tool is moved by a
maximum of 80% of the tool width for each groove.
You can specify a finishing allowance for the groove base and the flanks; roughing is then
performed down to this point.
The dwell time between grooving and retraction is specified in setting data
SD 55510: $SCS_TURN_GROOVE_DWELL_TIME.
Approach/retraction during roughing
Infeed depth D > 0
1. The tool first moves to the starting point calculated internally in the cycle at rapid traverse.
2. The tool cuts a groove in the center of infeed depth D (1).
3. The tool moves back by D + safety distance at rapid traverse.
4. The tool cuts a groove next to the first groove of infeed depth 2D (2).
5. The tool moves back by D + safety distance at rapid traverse.
6. The tool cuts alternately in the first and second groove by the infeed depth 2D, until the
7. All subsequent groove cuts are made alternately and directly down to the final depth T1
HMI sl Turning
Operating Manual, 01/2008, 6FC5398-7AP10-0BA0
final depth T1 is reached (3) and (4).
Between the individual grooves, the tool moves back by D + safety distance at rapid
traverse. After the last groove, the tool is retracted at rapid traverse to the safety
distance.
(5) to (8). Between the individual grooves, the tool moves back to the safety distance at
rapid traverse.
Programming a cycle
Safety distance
D + safety distance
D + safety distance
4.5 Rotate
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