Abrégé

A method for producing a molded body of particularly steel, and including a hub and a bell-shaped lower part axially connected thereto, in which an inner contour is made in the lower part by non-cutting forming in a convex region. The inner contour includes of ball tracks and cage paths that are concave in the axial direction and arranged in a peripherally alternating manner, for receiving rolling bodies, the cage paths being shallower than the ball tracks. The hub is formed from a rotating round blank and reducing the thickness thereof using at least one pressure roller. The flat region of the round blank that radially connects to the hub is pressed onto contour segments of a rotating first inner contour tool, partially forming the inner contour using at least one axially and radially moving pressure roller to form a preform of the lower part. The fixed preform is pressed against contour segments of a second inner contour tool by a die of partial dies, fully forming the cage paths and ball tracks.

Classes IPC  ?

• B21D 24/14 - Dispositifs commandant ou manœuvrant les serre-flans indépendamment, ou en relation avec les matrices pneumatiquement ou hydrauliquement
• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage
• B21D 53/12 - Fabrication d'autres objets particuliers de parties de roulementsFabrication d'autres objets particuliers de manchonsFabrication d'autres objets particuliers de sièges de soupapes ou pièces similaires de cages de roulements

Abrégé

A method for manufacturing a rotationally symmetrical shaped article, which has a cylindrical, concentric hub axially closed on one side, in a shaping process is performed such that at least one pressure roll is in contact with a rotating, closed, planar circular blank sheet and presses the material of the blank radially from the outside inward against a projecting part that runs upright on the circular blank such that the thickness of the circular blank decreases and the hub including a blind hole is formed.

Classes IPC  ?

• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage
• B21D 53/10 - Fabrication d'autres objets particuliers de parties de roulementsFabrication d'autres objets particuliers de manchonsFabrication d'autres objets particuliers de sièges de soupapes ou pièces similaires

Abrégé

Disclosed is a method for producing a component, particularly a transmission component, comprising a hub (11) in a pressing process without cutting the metal. In said method, a hub (12) is shaped from a rotating metal disk that has a through-hole (2) by means of at least one rotating pressing roll (8), said hub (12) extending substantially in a radial direction relative to the plane of the metal disk. The disclosed method is characterized in that the pressing roll (8) is radially applied from the outside towards the inside in such a way as to at least temporarily immerse into at least some sections of the metal disk, while pressing disk material (10) from the metal disk against the mold (7) such that a hub (12) is formed that encompasses the mold (7) as an internal section as well as an external hub section (13) which is made from material of the metal disk (1) and is pressed against the mold (7).

Classes IPC  ?

• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage
• B21D 53/26 - Fabrication d'autres objets particuliers de roues ou de pièces similaires
• F16H 55/44 - Poulies en tôle