Method and device for machining edge regions of cylindrical...

B - Operations – Transporting – 21 – H

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B21H 5/02 (2006.01) B21J 5/12 (2006.01) B21K 1/30 (2006.01)

Patent

CA 2533051

The invention relates to a method for producing radially inwardly protruding projections or sides (4) on the inner side (3') of tooth tips (3) which are embodied essentially axially in relation to the longitudinal axis on the envelope surface of an essentially cylindrical hollow body (1), in the region of the front edge of the hollow body (1). Such hollow bodies (1) can preferably be clutch lamellae carriers for using in automatic gearboxes. Advantageously, striking or stamping processes are radially carried out from the outside towards the hollow body axis on the outer side (3'') of the tooth tip (3) in the region of the front edge. The striking and stamping processes are respectively carried out only over part of the width (b) of a respective tooth tip (3). In this way, modifications by said striking and stamping processes to the outer shape of the tooth tips (3), especially the outer edges and flanks (7), are advantageously avoided.

La présente invention concerne un procédé de production de saillies ou de bourrelets (4) faisant radialement saillie vers l'intérieur sur le côté intérieur (3') de sommets de dents (3) conçus de façon essentiellement axiale par rapport à l'axe longitudinal sur la surface d'enveloppe d'un corps creux essentiellement cylindrique (1), au niveau de l'arête frontale du corps creux (1). De tels corps creux (1) peuvent de préférence être des supports de lamelles d'embrayage destinés à être employés dans des transmissions automatiques. Des processus de frappe ou d'estampage sont de préférence réalisés radialement par l'extérieur contre l'axe du corps creux, sur le côté extérieur (3'') du sommet de dent (3), au niveau de l'arête frontale. Les processus de frappe ou d'estampage ne sont réalisés que sur une partie de la largeur (b) d'un sommet de dent respectif (3). Ainsi, il est possible d'éviter que lesdits processus de frappe ou d'estampage ne provoquent des modifications de la forme extérieure des sommets de dents (3), notamment des bords et flancs extérieurs (7).

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