Cycles; Overview Of Cycles - Siemens SINUMERIK 802D sl Programming And Operating Manual

Cycles

9.1

Overview of cycles

Cycles consist of technology subroutines.
You can use cycles for general implementation of a certain machining process, such as
plunge-cut grinding, dressing, or longitudinal grinding.
These cycles are adapted to individual tasks by parameter assignment.
In principle, grinding involves two different types of technological sequence:
● Dressing the grinding wheel
● Grinding the workpiece
The dressing and grinding machining operations are achieved by means of NC cycles.
Grinding tools need to be dressed after a certain time in service to compensate for worn
wheels and to restore their original profile.
Dressing of a wheel pursues two objectives:
● Profiling is aimed at achieving the required wheel shape.
● Sharpening is aimed at restoring the wheel's ability to cut.
The workpiece grinding cycles enable surface grinding with the Y/Z infeed axes (right-
angled).
Grinding cycles
The SINUMERIK 802D sl controller supports the following cycles for surface grinding:
CYCLE406
CYCLE407
CYCLE408
CYCLE409
CYCLE416
CYCLE426
CYCLE427
CYCLE428
CYCLE429
CYCLE430
CYCLE446
Surface grinding
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
Z positioning with grinding wheel
Safety position approaching
3-stage plunge-cut oscillation (roughing, finishing and fine-finishing)
3-stage surface grinding (roughing, finishing and fine-finishing)
Dressing and profiling
Oscillating plunge cutting
Surface grinding with continuous infeed
Surface grinding with intermittent infeed
Profile grinding
Dressing with profile roller
Selection of grinding wheel peripheral speed
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