Robert Boschgmbh

Lothar Fauth

Hans Kobschaetzky

Klaus Maldener

Martin Kiefer

Martin Wiesler

Dieter Kern

Detlef Lauk

Richard Hurst

Ernst Fischer

Juergen Herp

Erik Maurer

Hansjoerg Karcher

Andreas Wiegert

Anton Waibel

Klaus-Dieter Haefele

The invention relates to a method to manufacture a shaft () as well as a device containing such a shaft (), in particular an armature shaft () of an electromotive drive (), which is held by at least one shaft mounting, whereby a curved, rounded stopping tip () that can support itself on an axial stopping face () is formed at least one fore part () of the shaft () by means of material displacement.

Method for producing a shaft comprising stop caps device containing one such shaft

The invention relates to a method for mounting a worm on an armature shaft of an armature for an electric motor. The invention proposes first mounting armature parts, such as an armature lamination packet with armature windings, a commutator, a bearing seat, and/or a bearing, on the armature shaft and then rolling the worm on the armature shaft. This has the advantage that the worm can have a greater diameter than does the armature shaft over its remaining length.

Method for providing a worm on an armature shaft of an electric motor, and armature produced by the method

A method for producing a shaft and a device containing such a shaft (), in particular an armature shaft () of an electric motor drive (), which shaft is held by at least one shaft bearing (), includes forming a bearing surface () for guidance in a shaft bearing () onto the shaft () at at least one point by positive displacement of material.

Method for producing a shaft and device containing one such a shaft

An armature according to the invention is comprised of a number of lamination modules, wherein each module has a beginning region and an end region that are each fastened to the rotor shaft so that even in the presence of very high torques, the holding force for the sheet metal laminations between the beginning region and end region is so great that they do not shift.

Armature and method for producing an armature

In rotors for electric motors, it is usual to fix the commutator on the rotor shaft by means of a press fit. In the present invention, the rotor shaft, with the rotor core fixed thereon, is electronically coated with an epoxy layer on opposite portions of the rotor shaft and in the winding slots, and is then heated on the plasticizing and curing temperature of the epoxy. After that, with the help of a sliding temperature, the commutator, whose inner bore has a clearance fit relative to the rotor shaft, is slipped onto the rotor shaft in a terminal position, in the process the still-viscous epoxy is pushed backward and is deposited radially on a connecting end face, forming a bead, and penetrates the annular gap between the inner bore and the rotor shaft. Once the epoxy layer has cooled, the commutator is fixed against rotation and displacement on the rotor shaft. The rotor is suitable for electric motors of various types.

Method of producing a rotor

The invention relates to a shaft and hub connection for securing bearings, in particular ball bearings (,), on a shaft (,). The proposal is made that the hub part (,) of the bearing (,) encompassing the shaft (,) have at least one axial surface (,), against which a projection (,) rests, which is produced from the shaft (,) by means of plastic deformation and prevents an axial movement.

Shaft-hub assembly and method of production thereof

In rotors for electric motors, it is usual to fix the commutator on the rotor shaft by a press fit. In the present invention, the rotor shaft, with the rotor core fixed thereon, is electrostatically coated with an epoxy layer on opposite portions of the rotor shaft and in the winding slots, and is then heated to the plasticizing and curing temperature of the epoxy. After that, by a sliding tool, the commutator, whose inner bore has a clearance fit relative to the rotor shaft, is slipped onto the rotor shaft in a terminal position, in the process the still-viscous epoxy is pushed backward and is deposited radially on a connecting end face, forming a bead, and penetrates the annular gap between the inner bore and the rotor shaft. Once the epoxy layer has cooled, the commutator is fixed against rotation and displacement on the rotor shaft. The rotor is suitable for electric motors of various types.

Growing community of inventors

Buehl, Germany

Lothar Fauth