| 摘要 |
Punching press with automatic tool change, specifying that, at the bottom of the throat made in the framework of the press, there is provided a vertical-rotation pin, receiving in oscillating manner horizontal arms, the free end of the upper arm receives punches which can be actuated selectively in a vertical plane and the free end of the lower arm supports punching dies, arranged in axial alignment with the punches, and the group of dies can slide along a support surface of the framework of the machine. Especially advantageously, between the arm receiving the series of punches and the arm receiving the series of dies there is provided an additional arm which can oscillate about a vertical axis and about a horizontal pin and this intermediate arm can be actuated by means of a cylinder-piston unit, operatively connected to the upper arm, supporting the series of punches. |
