Minebea Company, Limited

Jürgen Oelsch

Olaf Winterhalter

Thilo Rehm

Markus Kloepzig

Joerg Hoffman

Mathias Wildpreth

Ralf Dittes

Helmut Hueneke

The invention relates to a method for manufacturing a tool electrode for the electrochemical machining of workpieces, particularly for components for fluid bearings with the following processing steps: (a) Providing an electrode body made of a conductive base material which has an essentially smooth surface; (b) Coating the surface of the electrode body with an insulating material; (c) Removing the insulating material from locations on the surface of the electrode body that correspond to a pattern which is to be formed on the surface of the piece by means of electromechanical machining.

Method for manufacturing an electrode for the electrochemical machining of a workpiece and an electrode manufactured according to this method

The invention relates to an electronically commutated electric motor having a multi-pole magnetized permanent magnet, a plurality of flux guide units each of which features at least one flux collector section and one flux concentrator section, whereby each flux guide unit picks up a radial magnetic flux from the permanent magnet and redirects it into a transversal magnetic flux, and having a plurality of coils each of which is allocated to a flux guide unit and is arranged axially parallel to the permanent magnet.

Electronically-commutated electric motor comprising coils with parallel axes

A hydrodynamic thrust bearing, particularly forming a part of a bearing system for a rotary bearing of spindle motors utilized to power hard disk drives. The thrust bearing includes at least one annular thrust plate and a counter bearing corresponding to the thrust plate. The thrust plate is fixedly mounted on a shaft rotatably supported by means of a radial bearing system. The thrust plate is arranged on the shaft which is provided with an axial bore in the area where the thrust plate is to be positioned. A spherical element fixing the thrust plate is pressed into the axial bore. An outer diameter of the fixing element is greater than the inner diameter of the axial bore. This type of press connection between the thrust plate and the shaft allows comparatively thinner thrust plates to be used while the performance of the thrust bearing remains the same or improves.

Hydrodynamic thrust bearing

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Hohenroth, Germany

Jürgen Oelsch