Schaeffler Technologies Ag & Co .Kg

Ina Walzlager Schaeffler Ohg

Matthias Dohr

Daniel Faber

Benjamin Wubbolt-Gorbatenko

Fritz Kammerer

Martin Steigerwald

Dietmar Rudy

Jens Sch&auml;fer

Horst Gredy

Thomas Motz

Rainer Kleber

Michael Kurz

A ball screw nut having a tubular sheet metal body with a thread profile and being optionally encapsulated in plastic. This sheet metal body is formed of a sheet metal part that includes the thread profile and a ball-returning piece inserted therein, which is designed as an additional sheet metal part.

Ball screw nut

The invention relates to a method for producing a spindle for a ball screw, including the following steps: &#x2014;introducing, at least in sections, a thread profile into a flat material section, &#x2014;shaping the material section to a hollow cylindrical case, two lateral edges of the hollow cylindrical case abutting each other and the thread profile being oriented radially outwards, &#x2014;connecting the two lateral edges of the hollow cylindrical case, and &#x2014;forming, at least in sections, a supporting structure on a radially inner face of the hollow cylindrical case to finish the spindle. A spindle for a ball screw in hybrid design can thus be manufactured in a simple manner. The spindle can be produced cost-effectively and yet has high wear resistance and excellent mechanical load-bearing capacity as well as light weight. The invention further relates to a spindle manufactured according to the invention, for use in a ball screw.

Spindle for a ball screw and method for producing same

A nut () for a planetary roller screw drive is provided. A sleeve () which is produced by metal forming is provided, and two rings () that lie at a fixed distance with respect to each other in the axial direction are provided in this sleeve. In order to engage planets (), the one ring () has the one groove profile (), and the other ring () has the other groove profile ().

Nut of a planetary roller screw drive, and method for producing such a nut

The Invention concerns g solenoid valve, more particularly a proportional hydraulic valve which is arranged within a hydraulic system of a device for varying the valve timing of gas exchange valves in an internal combustion engine. The solenoid valve ( ) generally comprises an electromagnet ( ) having a hollow cylindrical magnet housing ( ), at least one coil winding ( ) and an armature ( ) as Well as a first pole shoe ( ) and a second pole shoe ( ) and further comprises a valve member ( ) having a hollow cylindrical valve housing ( ) for receiving a spool valve which is displaceable relative to the valve housing ( ) by the armature ( ) of the electromagnet ( ). According to the invention, the electromagnet ( ) and the valve member ( ) are connected and fixed radially and axially to each other by force locking and/or positive engagement by the second pole shoe ( ) of the electromagnet ( ) which is arranged adjacent the valve member ( ) and configured as a plug-in lock for the valve housing ( ).

Solenoid valve, particularly a proportional hydraulic valve

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Herzogenaurach, Germany

Matthias Dohr