Shoulder dressing apparatus

Details Shoulder dressing apparatus Shoulder dressing apparatus

B - Operations, Transporting

23

B

B23B 3/22 (2006.01) B23B 5/16 (2006.01)

Patent

CA 2171945

Portable shoulder dressing (10) apparatus is disclosed for dressing shoulders on threaded ends of tubular connections (12, 14). The shoulder dressing tool, either of the box type or pin type, uses primary and/or secondary cutters (56, 64) to remove material from seal and/or stop shoulders of the tubular connection either simultaneously or on a single shoulder. The shoulder dressing tool includes a mandrel (20) that is threadably secured to the threaded end of the tubular connection. A piston (24) and cutter bar (33) are fixably secured together for holding primary and secondary cutter blades (56, 64). The piston, cutter bar, and cutters are mounted for axial and rotational movement with respect to the mandrel. A compression chamber (30) is activated, either hydraulically or pneumatically, to provide a biasing force to urge the cutters axially into contact with the shoulders to be dressed. An axially adjustable stop (68) including a stop roller (20) is used to set a travel length that determines the amount of material removed from the shoulders. The shoulder dressing tool may be operated either manually or automatically.

Appareil (10) portatif à dresser les épaulements, à boîtier ou à broche, se vissant sur les extrémités filetées de raccords tubulaires (12,14) et utilisant des fraises primaire et secondaire (54,64) pour enlever de la matière des épaulements de type joints ou butées de raccords tubulaires, soit simultanément, soit sur un seul épaulement. Ledit appareil comporte un mandrin (20) vissé sur l'extrémité filetée du raccord tubulaire, un piston (24) et un porte-fraise (33) fixés l'un à l'autre et servant de support aux fraises primaire et secondaire (56,64), le montage de l'ensemble piston, porte-fraise et fraises permettant des mouvements axiaux et rotatifs par rapport au mandrin. Un vérin (30) hydraulique ou pneumatique fournit une poussée axiale qui amène la fraise en contact avec les épaulements à dresser. Une butée axiale (68) à billes (20) ajustable se règle de façon à fixer la quantité de matière à enlever des épaulements. L'outil peut être commandé manuellement ou automatiquement.

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