Surface grinding
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
155
Cycles
9
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 Z positioning with grinding wheel
CYCLE407 Safety position approaching
CYCLE408 3-stage plunge-cut oscillation (roughing, finishing and fine-finishing)
CYCLE409 3-stage surface grinding (roughing, finishing and fine-finishing)
CYCLE416 Dressing and profiling
CYCLE426 Oscillating plunge cutting
CYCLE427 Surface grinding with continuous infeed
CYCLE428 Surface grinding with intermittent infeed
CYCLE429 Profile grinding
CYCLE430 Dressing with profile roller
CYCLE446 Selection of grinding wheel peripheral speed
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