Maschinenfabrik Rieter Ag

Rieter Cz S.r.o.

Rieter Ingolstadt Gmbh

Andreas Josef Pröll

Jiri Sloupensky

Milan Moravec

Siegfried Silber

Bernd Loos

Peter Dirnberger

Markus Kübler

Constantin Rieger

Siegfried Silber Dr

A method is provided for identifying a spinning rotor on a rotor spinning machine, wherein the spinning rotor is mounted in a suspended manner in a radially acting magnetic bearing during a spinning operation. At least one system variable that varies between different spinning rotors is identified. The system variable is detected and compared to at least one reference value. The system variable is one or a combination of: an energy consumption of the magnetic bearing; a radial position of the spinning rotor; or a resonant frequency of the spinning rotor. A rotor spinning machine that carries out the method is also provided.

Yarn return unit for returning a yarn as well as a workstation of a textile machine comprising a yarn return unit

A magnetic bearing for the mounting of a shaft, in particular for a spinning rotor of an open-end spinning device, features several pole shanks of a stator for the active radial magnetic mounting of the shaft in two degrees of freedom, which in each case are surrounded by a coil and are radially arranged to each other, in such a manner that they define an opening for the shaft. In the area of the opening, the pole shanks are connected to each other. For the passive axial mounting of the shaft, at least one permanent magnet is arranged between the coils and the opening. The invention also includes a shaft for mounting with at least one corresponding magnetic bearing. The shaft is a composite component, which at least partially consists of non-ferromagnetic material. In the area of the radial and axial mounting, a component made of a ferromagnetic material is arranged. A shaft mounting is also provided and features, for the passive axial mounting of one degree of freedom of the shaft and for the active radial mounting of two degrees of freedom of the shaft, at least one, preferably two, corresponding magnetic bearings.

Magnetic bearing, shaft and shaft monitoring for a spinning rotor of an open-end spinning machine

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St. Gotthard, Austria

Andreas Josef Pröll