Robert Boschgmbh

Daniel Cettier

Jochen Moench

Jie Bao

Willi Schmidt

Volker Hertweck

Holger Thoene

Otmar Hertwig

Bernhard De Graaff

Guang Qiao

The invention relates to a method for producing a gear worm () which is located in particular on an armature shaft () of an electromotive drive unit (), wherein firstly a worm gear () having screw flanks () axially opposite one another on a longitudinal axis () is formed by means of a rolling tool, and subsequently a groove structure () which is concentric about the longitudinal axis () is formed on the screw flanks () by means of an additional process step. The invention also relates to a gear worm () produced according to the method according to the invention, and to a transmission drive unit () containing such a gear worm ().

Method for producing a gear worm which is located in particular on an armature shaft, and such a gear worm

Gear mechanism (), in particular for adjusting moveable parts in a motor vehicle, comprising a spur wheel () which is provided with external teeth () and meshes with an internal gear () that is provided with internal teeth (), wherein the number of internal teeth () to generate a certain gear step-up ratio is greater by at least one than the number of external teeth () and the spur wheel () and the internal gear () perform an eccentric movement relative to one another, wherein the eccentric movement is directed exclusively by means of the matching tooth geometry of the internal and external teeth ().

Gear mechanism

Growing community of inventors

Karlsruhe, Germany

Daniel Cettier