Wittenstein Se

Wittenstein Ag

Heiko Schreiber

Michael Schmidt

Thomas Bayer

Frank Michel

Andreas Kümmeth

Thomas Wilhelm

Martin Kimmelmann

Wilhelm Dorner

Michael Lesch

Lars Estermann

Tobias Röthlingshöfer

Gearbox () having a tooth carrier () for receiving teeth () of a gear ring that are disposed about a rotation axis () of the gearbox, wherein the teeth () are disposed in the tooth carrier () so as to be displaceable and guided in the radial direction, a cam disk () which is rotatable about the rotation axis () and for driving the teeth () in the radial direction has a cam curvature that is variable over the circumference, wherein bearing segments () which are mounted so as to slide on the cam disk () are disposed between the teeth () and the cam disk (), and wherein the bearing segments () have a contact region which has a concave curvature and is disposed so as to be centric on a running surface that faces the cam disk (), wherein the concave curvature is larger than the smallest cam curvature of the cam disk, and smaller than the largest cam curvature of the cam disk.

Coaxial transmission with plain bearing

Gear mechanism () having a toothing (), a tooth carrier () accommodating a plurality of teeth () for engagement with the toothing, the teeth () being radially displaceable relative to the tooth carrier (), a drive input with a profiling () for radially driving the teeth (), and bearing segments () for mounting the teeth on the profiling. Each bearing segment includes a running side oriented in the direction of the profiling and a bearing side opposite the running side, a tooth bearing arranged on the bearing side for articulated mounting of at least one of the teeth, the tooth bearing including a bead which is at least substantially in the shape of a cylinder section and arranged from a first side edge to a second side edge of the bearing segment transverse to a running direction of the bearing segment. The bead is in a central region between the first and second side edges and has a first and/or second recess on a first and/or second side of the central region.

Gear mechanism

Coaxial gear mechanism (), having a toothing () oriented axially with respect to an axis of rotation () of the coaxial gear mechanism (), a tooth carrier () with axially oriented guides (), tooth pins () which each have a body (), which is mounted in an axially displaceable manner in a guide () of the tooth carrier (), and a head region (), wherein the head region () has at least one tooth () for engagement with the toothing (), and wherein the head region () is configured to be wider than the body ().

Coaxial gear mechanism

Coaxial gear mechanism (), with a toothing () oriented axially relative to a rotational axis () of the coaxial gear mechanism (), a tooth carrier () with axially oriented guides (), teeth () which are received in the guides () for engagement with the toothing (), wherein the teeth are oriented with their respective longitudinal axes () axially in the guides () and are mounted so as to be axially movable in the guides (), and a cam disk () which is rotatable about the rotational axis () for axially driving the teeth (), wherein a plurality of bearing segments () is arranged between the cam disk () and the teeth () for supporting the teeth ().

Coaxial transmission

A gearing, in particular a coaxial gearing or a linear gearing, comprising a tooth system, a tooth carrier having guides, teeth received within the guides for engagement with the tooth system, wherein the teeth are mounted within the guides to be displaceable in the direction of their longitudinal axis relative to the tooth carrier, a cam disk for driving the teeth along the respective longitudinal axis of the teeth, wherein at least one of the teeth respectively has a tooth flank area having tooth flanks, and a tooth body, wherein, between the tooth body and the tooth flanks, one shoulder respectively is provided, which projects back from the tooth body to the inside towards the tooth flank.

Gearing

Gear mechanism (), in particular coaxial gear mechanism, having an internal gear () with an inwardly directed toothing (), a tooth carrier () which is arranged coaxially with respect to the internal gear and in which a multiplicity of teeth () for engaging with the toothing () are accommodated, wherein the teeth () are mounted radially displaceably in the tooth carrier (), a drive element with a profiling () for radially driving the radially displaceably mounted teeth (), wherein the profiling () has, over its circumference, at least two elevations, wherein the gear mechanism is constructed such that there is a positive transmission ratio between a drive via the drive element and an output via the tooth carrier ().

Coaxial gear mechanism with positive transmission ratio

Gearing (), comprising a toothing (), a tooth carrier () with radially oriented guides with in each case one tooth root opening and one tooth tip opening, teeth () which are received in the guides for engagement with the toothing (), wherein the teeth () are mounted in the guides so as to be displaceable in the direction of their longitudinal axis and radially relative to the tooth carrier (), wherein a central section of the guides, respectively, has an internal profile which is uniform in the longitudinal direction of the guide, a cam disk () for the radial drive of the teeth (), wherein the teeth () have a run-in region between a respective tooth tip and a respective tooth body.

Gear mechanism, in particular coaxial gear mechanism or linear gear mechanism, having a toothing system, a tooth carrier with radially oriented guides, teeth which are received in the guides for engagement with the toothing system, the teeth being mounted in the guides such that they can be displaced radially relative to the tooth carrier in the direction of their longitudinal axis, a cam disk for radially driving the teeth, the tooth carrier comprising a first tooth carrier part and a second tooth carrier part.

Gear

A transmission, in particular a coaxial transmission or linear transmission, comprising a toothing, a tooth holder in which a plurality of tooth segments are accommodated to engage with the toothing, wherein the tooth segments are borne to be radially shiftable relative to the tooth holder, a drive element having a profiling for radially driving the tooth segments borne in a radially shiftable manner, wherein the transmission has inner initial stress.

Transmission

Gearing (), in particular coaxial gearing or linear gearing, having a toothing (), a tooth carrier () in which there is received a multiplicity of teeth () for engagement with the toothing, wherein the teeth () are mounted so as to be radially displaceable relative to the tooth carrier (), a cam disk () for the radial drive of the radially displaceably mounted teeth (), wherein the cam disk () has two encircling rims, between which there is arranged a raceway, rolling bodies () which are arranged on the running surface between the rims, and a multiplicity of pivot segments () which are arranged in encircling fashion on the rolling bearing bodies and which lie in each case by way of a rolling bearing surface against the rolling bodies (), wherein, on both sides of the rolling bearing surface, there is arranged in each case one rim bearing surface, wherein the two rim bearing surfaces lie at least partially against the rims.

Disclosed herein is a transmission having a tooth holder for holding teeth of a toothed ring, said teeth being arranged around an axis of rotation of the transmission, wherein the teeth are arranged in the tooth holder in such a way as to be movable and to be guided in a radial direction. The transmission furthermore has a drive element, which is rotatable about the axis of rotation, for driving the teeth in a radial direction, wherein the drive element has a cam contour with lobes in a radial direction. Swivel segments are arranged between the teeth and the drive element. A thrust washer is arranged in the tooth holder, at least on one side in an axial direction of the swivel segments. A method for producing a transmission according to the embodiments described herein is furthermore described.

Transmission, in particular for converting a rotational movement around the longitudinal axis of the transmission into a linear movement in the direction of the longitudinal axis or vice versa, having a rod having a gearing, a gear tooth carrier, in which gear teeth are accommodated so they are radially movable for an engagement with the gearing, the rod and the gear tooth carrier being mounted rotationally fixed relative to one another.

Gearing (), in particular single-stage gearing having a transmission ratio of greater than 1 to 10, having an internal gear () with an internal toothing (), a first toothed ring with radially movable first teeth () for engaging into the internal toothing (), a second toothed ring with radially movable second teeth () for engaging into the internal toothing (), an inner shaft () on which is fastened a first cam disk () for the radial drive of the first teeth () and a second cam disk () for the radial drive of the second teeth (), and a load dividing device for dividing a torque transmitted via the toothed rings between the toothed rings.

A coaxial gear set, in particular a hollow shaft gear set for industrial drive technology, having high power density, comprising a drive element (), an element (), and an output element, with a gear ratio and a transmission of a drive torque occurring between the drive element () and the output element via a plurality of radially movable tooth segments (), an outer tooth flank contour () of the tooth contour () of the tooth segments () and/or a flank contour () of a gearing () of an inner gearing () of an internal wheel (), relative to a gear axis (M), a tooth contour that allows surface contact in the engagement area comprising a logarithmic spiral.

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Gnaschwitz, Germany

Heiko Schreiber