Gkn Driveline International Gmbh

Rolf Cremerius

Thomas Weckerling

Wolfgang Hildebrandt

Stephan Maucher

Anna Gremmelmaier

Ida Hassenrik

Hans-Jürgen Post

Ida Benner

Rainer Adolfs

Ümit Aydin

Galina Ermakova

Jürgen Post

A blank for a conduit arrangement includes an annular conduit having a first end and a second end, which is formed by a channel surrounded by a wall. The conduit arrangement has an axis of rotation and the conduit extends in a circumferential direction over an angle of more than 360 degrees about the axis of rotation and forms at least one wind turn. The axis of rotation is arranged perpendicularly to a base surface, the wall having first surfaces which are arranged at a first angle of at least 30 degrees relative to the base surface or in which a surface normal forms at least one second angle of 0 to 60 degrees with respect to the base surface. First partial surfaces of the walls, which face one another in an axial direction, of adjacent turns are arranged spaced apart from one another. The blank is produced by an additive manufacturing process.

Blank for a conduit arrangement

A constant velocity joint comprises an outer joint part with outer ball tracks, an inner joint part with inner ball tracks, wherein respectively an outer ball track and an inner ball track form a pair of tracks with each other; a torque-transmitting ball in each pair of tracks; a ball cage in which the torque-transmitting balls are received; wherein a first articulation angle range is defined comprising articulation angles of less than twenty degrees, and a second articulation angle range comprising articulation angles greater than twenty degrees; wherein an opening angle within the first articulation angle range increases as the articulation angle (&#x3b2;) increases, and wherein a first mean opening angle increase of the first articulation angle range is greater than a second mean opening angle increase of the second articulation angle range.

Constant velocity joint

A constant velocity joint comprises an outer joint part with a longitudinal axis and first and second outer ball tracks. The outer joint part comprises an attachment side and an aperture side. An inner joint part has a longitudinal axis and first and second inner ball tracks. with a torque transmitting ballin each pair of tracks, and a ball cagewith cage windowsin which the ballsare held. In each angular position of the constant velocity jointan opening angle is enclosed between an outer tangent and an inner tangent at the ball. At least one of the first and second pairs of tracks is designed such that, within a small articulation angle range comprising at least the joint central plane, at at least an articulation angle, an opening angle amounts to zero, and within a greater articulation angle range, an aperture-side opening angle of a first pair of tracks widens in the opposite axial direction relative to the aperture-side opening angle of a second pair of tracks.

Constant velocity joint in the form of a counter track joint

A constant velocity joint comprises an outer joint part with a longitudinal axis and outer ball tracks, wherein the outer joint part comprises an attachment side and an aperture side; an inner joint part with a longitudinal axis and inner ball tracks; a torque transmitting ball in each pair of tracks; a ball cage with cage windows in which the balls are held, wherein in each angular position of the constant velocity joint there is enclosed an opening angle &#x3b4; between an outer tangent T and an inner tangent T' at the ball, wherein at least one of the pairs of tracks is designed such that, inside a small articulation angle range, which comprises at least the joint central plane EM, in at least one joint articulation angle &#x3b2;, an opening angle &#x3b4; amounts to zero, and that inside a larger articulation angle range, an aperture side opening angle &#x3b4; of a ball moving towards the aperture side of the outer joint part and an attachment side opening angle &#x3b4; of a ball moving at the same joint articulation angle &#x3b2; towards the attachment side of the outer joint part do not equal zero and open in the same axial direction.

A cage having a plurality of cutouts for receiving rolling bodies of a joint includes a quenched and tempered steel, and the entire cage has a substantially uniform ductility over its cross section without surface hardening. The cage may be produced by forming a closed base body, cutting out a plurality of cutouts, fully hardening the cage by heating and subsequently quenching the cage, and tempering the cage.

Quenched and tempered joint cage

A process machining inner joint parts () of constant velocity universal ball joints, which inner joint parts () comprise a longitudinal axis (A) and at least one guiding face by which the inner joint part () is continuously angularly movably guided in a ball cage, and which comprise a plurality of ball tracks () which are distributed around the circumference of the guiding face and which divide the guiding face into a corresponding plurality of guiding webs () and in which torque transmitting balls can be held so as to be longitudinally displaceable. One ball track () and at least one guiding web () are machined simultaneously.

Process of and device for machining ball hubs

A cage having a plurality of cutouts for receiving rolling bodies of a joint, wherein the cage comprises a quenched and tempered steel, and the entire cage has a substantially uniform ductility over its cross section without surface hardening.

A process of machining outer joint parts () and inner joint parts () of constant velocity universal ball joints, which outer joint parts () and inner joint parts () each comprise a longitudinal axis and a number of ball tracks (), wherein the ball tracks are each arranged circumferentially in pairs (), whose central track lines are positioned in planes (E, E, E, E) extending parallel relative to one another, wherein the pairs of ball tracks () are machined by rotating disc tools () whose axes of rotation (R) perpendicularly intersect the respective longitudinal axis at a distance from one another and are held and guided coaxially relative to one another.

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St. Augustin, Germany

Rolf Cremerius