Pressure medium controlled clamping device

B - Operations – Transporting – 61 – B

Patent

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Details

B61B 12/12 (2006.01) B23Q 7/04 (2006.01)

Patent

CA 2278607

The invention relates to a clamping device for elongated bodies (4) comprising a tubular sleeve (1) having a cap (2) with a cylindrical hole (3) for receiving said body, at each of its ends. The sleeve surrounds an elongated and toroidal pressure body (6) filled with a liquid or gaseous pressure medium and submitted to a pressure. The pressure body (6) comprises, for example, two concentric flexible tubes (5) having their ends connected to one another, and is connected to the pressure medium control system by means of a valve (7). When the pressure body (6) is submitted to a pressure, its walls are compressed both outwardly against the sleeve (1) and inwardly against the elongated body (4). The clamping action is thus applied uniformly on the whole surface of the body (4) located within the sleeve (1).

Dispositif de fixation pour pièces de forme générale allongée (4), présentant un manchon tubulaire (1) muni à chacune de ses extrémités, d'une coiffe (2) percée d'un trou cylindrique (3) destiné à recevoir la pièce (4). Le manchon (1) entoure un corps de maintien de pression (6), allongé et de forme torique, rempli d'un milieu de pression liquide ou gazeux pouvant être sollicité à la pression. Le corps de maintien de pression (6) comprend, par exemple, deux tuyaux souples concentriques (5) dont les extrémités sont reliées entre elles, et est connecté, par une soupape (7), au système central de commande du fluide sous pression. Lorsqu'une pression s'exerce sur le corps de maintien de pression (6), ses parois sont pressées, aussi bien vers l'extérieur, à l'encontre du manchon (1), que vers l'intérieur, à l'encontre de la pièce de forme allongée (4). La force de serrage agit ainsi uniformément sur toute la surface de la pièce (4) se trouvant à l'intérieur du manchon (1).

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