Siemens SINUMERIK 840D sl Function Manual page 345

Figure 5-12
The functional interrelationships on the gear hobbing machine are as follows:
In this case, the workpiece table axis (C) is the following axis which is influenced by three
master drives.
The setpoint of the following axis is calculated cyclically with the following logic equation:
n = n
c
Where:
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Definition of axes on a gear hobbing machine (example)
* (z / z ) + v * (u / z
b 0 2 z dz
n = Rotational speed of workpiece axis (C)
c
) + v * (u / z )
2 y dy 2
M3: Coupled axes
5.8 Examples
345