Cutting die head

B - Operations – Transporting – 23 – G

Patent

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Details

B23G 1/00 (2006.01)

Patent

CA 2567904

A cutting die head (10) that can be set and/or reset without an external mechanism. To this end, the die head (10) includes a die body (12) including a plurality of radially adjustable blocks (46), each block having a cutter (48) mounted thereon and a radially outwardly facing cam surface (66). A sleeve (20) surrounds the die body (12) and has an inner surface. The inner surface has a plurality of cam surfaces (66) arranged to communicate with the cam surfaces of the blocks (46) such that axial movement of the sleeve results in radial movement of the blocks. In one embodiment the sleeve is caused to move axially by fluid pressure.

Une cage de filière (10) qui peut être enclenchée et/ou réenclenchée sans mécanisme externe. A cette fin, la cage de filière (10) comprend un corps de matrice (12) comprenant une pluralité de blocs réglables radialement (46), chaque bloc présentant un outil de tour (48) monté sur ceux-ci et une surface de came (66) tournée radialement vers l'extérieur. Un manchon (20) entoure le corps de matrice (12) et présente une surface interne qui est dotée d'une pluralité de surfaces de came (66) disposées de manière à communiquer avec les surfaces de came des blocs (46) de telle sorte que le mouvement axial du manchon se traduise par un mouvement radial des blocs. Dans un mode de réalisation, le manchon se déplace axialement sous l'effet de la pression du fluide.

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