| 摘要 |
The device for punching sheet by means of impact comprises a tube (1), one end of which faces the working surface of a die (2), a punch (3), which moves in the tube (1), and a space (6) therein above the punch and a space (5) below the punch, a high-pressure chamber (11) with a flexible body (12) accommodated therein, a compressed-gas container (8) which is connected to the space (6) above the punch, a starting device (4) which interacts with the punch (3), a device for returning the punch (3) to the starting position, and a device (20) for apportioning fluid to the space (5) below the punch, which device interacts synchronously with the starting device (4) and is arranged in such a way that it can feed fluid to the space between the punch (3) and the flexible body (12). <IMAGE> |
