Neumayer Tekfor Holding Gmbh

Shaft-Form-Engineering Gmbh

Bf New Technologies Gmbh

Hofer Powertrain Innovation Gmbh

Mathias Lutz

Volker Szentmihalyi

Claus Disser

Ekkehard Koerner

Ewald Baechle

Manfred Niederhuefner

Werner Jacob

Klaus Kalmbach

Thomas Gregor

Bernd Patzelt

Fabian Kelch

Markus Lee

Felix Fischer

Bernd Dr-Ing Patzelt

A dual transmission with input shafts, output shafts, a transmission case and two separate single transmissions arranged in the transmission case is described. Each single transmission is a two-stage spur gear transmission with three positions for gear centers. A first position is occupied by an input shaft and a second position by an output shaft. A third position is for a middle stationary axle fixed to the transmission case. The three positions define a triangular arrangement having a first side defined by a distance between the first position and the second position, a second side defined by a distance between the first position and the third position, and a third side defined by a distance between the second position and the third position. The second side and the third side form respective angles with the first side. At least one of these angles has a value ranging between 5° and 70°.

Dual transmission with triangularly arranged gear center positions

A method for producing an internal or external part of a torque-transmitting opposed track joint, such as a fixed constant velocity ball joint, in which approximately axially parallel extending track bases of the joint tracks have curvatures which deviate in their axial course from the curvatures of the ball contact lines. The method is characterized in that in a first step a perform with approximately axially parallel extending grooves having lateral flanks is produced, and in a second step the perform is formed into a final joint part whereby the lateral flanks of the grooves are just partially formed to achieve the ball contact lines.

Method for producing an internal or external part of an opposed track joint

A joint, particularly a constant velocity ball joint, including an inner hub and an outer hub, which hubs exhibit respective inner and outer ball tracks which are associated with each other in pairs, and further including balls disposed in the pairs of associated inner and outer ball tracks, the tracks being configured such that at the contact points of the balls with the ball tracks the tangential planes form an angle of inclination, and the ball tracks exhibiting at any given time a continually changing curvature, as a result of which the angle of inclination is constant.

Constant velocity ball joint

A method for producing a torque transmission device such as a fixed constant velocity ball joint constructed as an opposed track joint in which the curvatures bases of the tracks of the joint deviate in their axial course from the curvatures of the ball contact lines. The method is characterized in that prior to the formation of a longitudinal profile of a joint component, the component is brought to an increased hardness by a hardening process and a diffusion layer is partially or completely removed in the region of the longitudinal profile.

Method for producing a torque transmission device useful as a fixed constant velocity ball joint for drive shafts

A jointed shaft with two shaft sections which are connected together in a rotationally fixed manner via a central shaft which is constructed as a constant velocity fixed joint. A constant velocity fixed joint is also arranged on the end of each of the shaft sections which is oriented away from the central joint. At least one roller displacement unit, which enables both shaft sections to be displaced in an axial manner in relation to each other, is also provided.

Joint shaft and roller displacement UNIT THEREFOR

A connecting arrangement between a shaft journal, which is mounted so as to be axially fixed with respect to a unit, and a joint part which can be pivotably attached to the shaft journal in a rotationally fixed manner. A shaft nut having an internal thread which can be screwed onto an external thread of the shaft journal, is provided with an additional external thread onto which a further nut can be screwed. The further nut includes first and second thread sections with different pitch directions which produce an axially acting interlocking connection between the further nut, the shaft nut and the joint part.

Connecting arrangement between a shaft journal and a joint part

A torque transmission device such as a fixed constant velocity ball joint constructed as an opposed track joint and a process for producing such a device, in which the curvatures bases of the tracks of the joint deviate in their axial course from the curvatures of the ball contact lines. The process is characterized in that prior to the formation of a longitudinal profile of the joint component, the component is brought to an increased hardness by a hardening process and a diffusion layer is partially or completely removed in the region of the longitudinal profile.

Torque transmission device useful as a fixed constant velocity ball joint for drive shafts and method for producing such a joint

A connecting arrangement between a shaft journal (), which is mounted so as to be axially fixed with respect to a unit, and a joint part () which can be pivotably attached to the shaft journal in a rotationally fixed manner. A shaft nut () having an internal thread () which can be screwed onto an external thread () of the shaft journal, is provided with an additional external thread () onto which a further nut () can be screwed via a counter-thread () to produce an axially acting interlocking connection () between the further nut () and the joint part ().

A method for producing a joint connection for torque-transmitting connection of a component () provided with spur gear teeth () with a constant velocity joint () provided with corresponding spur gear teeth (). The spur gear teeth can be brought into interengagement by applying an axial engaging force and have flanks () that contact each other as functional surfaces. The invention also relates to a joint connection of the aforementioned type.

Method for producing a joint connection and joint connection

A constant velocity joint having an inner hub and an outer hub () in which races or tracks () associated with one another in pairs are provided and with balls received in respective pairs of races or tracks for transmitting torque. The constant velocity joint is further provided with at least one joint connector () which, when the joint is assembled, is connected in a rotationally fixed manner to one of the hubs () by mating profile members () in order to transmit torque.

Constant velocity joint

The invention relates to a drive joint for permitting a rotationally and axially fixed connection between a first and second shaft sub-section, the connection allowing a limited angular displacement.

Telescopic drive joint

A displacement unit and a jointed shaft which includes such a displacement unit. The displacement unit is formed of an external part and of an internal part which can be displaced in an axial direction in the external part, in which the external and internal parts have guide paths provided with balls arranged in the guide paths for the transmission of torque.

Growing community of inventors

Tuebingen, Germany

Mathias Lutz