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AssigneeRieter Machine Works, Ltd.
InventorsFelix Graf, Armin Wirz, Heinz Mutter
Estimating the term…
The controlled magnetic bearing arrangement supports a rotatable shaft and contains an electronic control circuit. The shaft is floatingly supported in the bearing arrangement by magnets controlled by the electronic control circuit and the stiffness of the shaft is thereby adjustable. The shaft may constitute a package support shaft in a winding device of a spinning machine and has a free end for permitting the axial exchange of bobbin tubes and packages. This arrangement provides the advantages of attaining very high rotational speeds for the package support shaft and the possibility of varying the stiffness of such package support shaft and thus the critical rotational speeds. The regions of the critical rotational speeds can be passed through in a safe manner.
A method of using a controlled magnetic bearing arrangement formed by a predetermined number of stationary electromagnets arranged in a substantially circular annular relationship and further containing control means controlling the electric current flowing through said predetermined number of electromagnets, said method comprising the steps of:
A winding device for use with a spinning machine and comprising:
Dependencies are inferred from the claim text.