Aktiebolaget Skf

Davide Antonio Olivieri

Paolo A Re

Laura Sguotti

Fulvio Carlo Nicastri

Domenico Bosco

Stefano Galfre

Alessandro Ferrero

Andreas Knopf

Marcello Rossi

Enrico Luigi Morello

Carmelo Gulli

Michel Organisciak

Marco Panchetti

Héctor Villalobos

Daniele Brogna

Aurelio Nervo

Fabio Marchetti

Domenico Bruno

Cengiz Shevket

Luca Biancone

Jan Arie Pieter Van Riet

Enrico Morello

Nicastri Fulvio

Carmelo Gulli'

A method and equipment for forming a front toothing having a plurality of radial teeth on an annular collar of an inner ring of a wheel hub, wherein a plurality of first knives are axially and sequentially impressed on the annular collar and have a first predetermined circumferential profile (P) configured to form radial reliefs which are spaced by imprints and have a rounded circumferential profile corresponding to the profile of the ridges of the radial teeth to be obtained; thereafter, a plurality of second knives are axially and sequentially impressed on the annular collar inside the imprints and have a third predetermined circumferential profile (P) configured to reproduce in reverse at least part of respective opposite flanks of the radial teeth of the front toothing to be obtained.

Method for forming a front toothing on an inner ring of a wheel hub and associated equipment

Front toothing on an inner ring of a wheel hub and associated equipment

An apparatus including a plurality of first and second pressing elements arranged in crown symmetrically around an axis of symmetry (B) so that a first end of a first pressing element cooperates in contact with a second end of a second pressing element; wherein the first and second pressing elements are supported slidingly and passing through by, respectively, a first and a second plate coupled and bound to each other, in respective second and first slits angularly spaced apart; the first pressing elements being provided with hammerheads circumferentially wider than the second slits and which cooperate circumferentially without play in contact with each other, and the second pressing elements being provided with engraving heads circumferentially wider than the first slits, which cooperate circumferentially without play in contact with each other.

Apparatus and method for forming a front toothing on an inner ring of a wheel hub and associated front toothing

A flanged inner ring, and methods of forming the same, having a rolling edge configured to preload axially a radially inner ring of a rolling bearing after being plastically deformed; the rolling edge including a diameter of increasing variable size along an axis (X) of symmetry of the flanged inner ring and, wherein the increasing variable size increases along the axis (X) in a direction away from the radially inner ring, and the rolling edge includes an outer preloading surface configured such that in a deformed configuration the outer preloading surface is arranged against the radially inner ring and such that in an undeformed configuration the outer preloading surface is inclined away from the axis (X) of symmetry of the flanged inner ring.

Flanged inner ring for orbital forming operation

A hub-bearing unit is provided with: a rotatable hub, with an axially outer flange portion configured for engagement with a rotatable element of a motor vehicle, a bearing unit provided with a fixed radially outer ring, configured for engagement with a fixed element of the motor vehicle, a first, axially outer, crown of rolling bodies, and a second, axially inner, crown of rolling bodies, interposed between the radially outer ring and the hub. The hub also assumes the function of the radially inner ring of the bearing unit and the bell of a constant velocity joint. The hub-bearing unit is designed so that the axial distance between the center of the axially inner crown of rolling bodies and the rolling center of the constant velocity joint lies within a predetermined range according to the following formula: 

Hub-bearing unit with rotor hub

A sealing assembly insertable between a stationary outer ring and a rotating inner ring of a bearing or hub bearing unit, having a first C-shaped shield supported by the inner ring and a second L-shaped shield supported by the outer ring. The first shield has a first annular sealing element having a first annular lip that extends axially cantilevered from the flange portion of the second shield in a position facing a radially outer sleeve shaped portion of the first shield and a second annular lip, elastically deformable, arranged radially on the inside of the first lip and which cooperates in contact with a radially inner sleeve shaped portion of the first shield, which carries a second sealing element having a third annular lip, which extends axially cantilevered from the first shield and towards the second shield and which is radially interposed between the first and the second lip.

Sealing assembly for rolling bearings, in particular for a hub bearing unit of vehicles and associated hub bearing unit

A hub unit is provided with a hub made of an aluminum alloy for plastic processing, which forms, in a single piece, an axially extending cylindrical portion and a radial flange; two bearing rings are mounted axially aligned around the cylindrical portion, an axially inner edge of the cylindrical portion is plastically deformed in a radially outer direction against the axially inner bearing ring.

Lightweight hub unit with integrated bearing rings and process for its manufacture

A hub for a motor vehicle wheel provides a cylindrical portion that extends in an axial direction, and a flange extending in a radially outer direction from an axially outer end of the cylindrical portion. The hub includes a core of metallic material which extends into the cylindrical portion and in the flange of the hub, and a covering body of plastic material applied over the core.

Hub for a motor vehicle wheel

A bearing-hub assembly having a rolling bearing provided with a stationary radially outer ring, at least one rotatable radially inner ring and at least one row of rolling bodies is provided. The bearing-hub assembly includes a light alloy hub, provided with a flanged portion and a cylindrical housing. The cylindrical housing is axially located inside the radially inner ring and is provided with an external lateral surface having a complementary shape with an internal lateral surface of the radially inner ring.

Bearing-hub assembly with a light alloy hub

A hub unit includes a hub of light material forming a cylindrical portion, a flange and a radial recess having a surface facing the flange, and two bearing rings axially aligned around the cylindrical portion of the hub; a sleeve locking device is radially interposed between the cylindrical portion of the hub and the bearing rings, and comprises a retaining portion engaged in the radial recess of the hub, a terminal edge which preloads the bearing rings, and one or two cuts extending in an axial direction.

Lightweight hub unit with integrated bearing rings and processes for its manufacture

A method including the steps of forming an inner ring of a wheel hub, by joining a spindle and an insert ring fitted onto the spindle, on a side of a first end of the spindle; axially blocking the insert ring on the spindle by plastically deforming the first end of the spindle that forms an upset collar therewith, which axially protrudes from the insert ring; frontally obtaining on the collar, on the side opposite to the insert ring, a frontal toothing by means of a single creator tool, towards the collar, with a toothing complementary to that to be obtained, by axially impressing onto the collar, in sequence, one or more teeth of the complementary toothing by eccentrically pushing the creator tool against the collar while the creator tool is held substantially coaxial to the wheel hub, thus acting peripherally in sequence on the whole creator tool.

Method of forming a frontal toothing on an inner ring of a wheel hub

A method including the steps of forming an inner ring of a wheel hub, by joining a spindle and an insert ring fitted onto the spindle, on the side of a first end of the spindle; axially blocking the insert ring on the spindle by plastically deforming the first end of the spindle so as to form an upset collar therewith, which axially protrudes from the insert ring; and once the step of forming the upset collar has finished, frontally obtaining a frontal toothing; the finished collar has, in the part of the collar which axially protrudes from the ring, a predetermined geometric shape which substantially defines, in the radial section, a scalene triangle having the base facing the upset ring and the vertex opposite the base rounded in shape.

Method of forming a frontal toothing on an inner ring of a wheel hub, upset collar and wheel hub with frontal toothing thus obtained

An apparatus including rigid plate having a first face and a second face, a plurality of through seats arranged as a circular crown about an axis of symmetry (A), perpendicular to each seat and shaped as a circular crown segment; a plurality of knives carried by the plate, each being axially slidingly guided into a seat, independently of the other knives; each knife has a head which protrudes from the seat from the side of the first face, a prismatic body having an axial length greater than the seat, and a wedge-shaped end, opposite to the head, which protrudes from the second face when the head substantially abuts against the first face; the wedge-shaped ends circumferentially having a first profile, complementary to that of the frontal toothing to be obtained, and the knives can be replaced totally or partially with others having a second profile different from the first profile.

Equipment for forming a frontal toothing, in particular on an inner ring of a wheel hub

A method including the steps of forming an inner ring of the wheel hub, as the joining of a spindle and an insert ring fitted onto the spindle, on the side of a first end of the spindle; axially blocking the insert ring on the spindle by plastically deforming the first end of the spindle so as to form an upset collar therewith, which axially protrudes from the insert ring; and once the step of forming the upset collar has finished, frontally obtaining on the collar, on the side opposite to the insert ring, a frontal toothing by axially impressing on the collar one or more knives in sequence, carried in an axially sliding manner by a plate.

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Turin, Italy

Davide Antonio Olivieri