| 摘要 |
<p>Punching-nibbling press, in particular for sheet metal or the like, comprising at least one punch or stamp (1,101) mounted coincident with a coaxial die or mould (2,202), which punch (1,101) can be moved in the direction of the die (2,202), executing a punching-nibbling stroke towards the said die (2,202) and against a workpiece interposed between the said die (2,202) and the punch (1,101), and a stroke of withdrawal from the die and from the workpiece; the punching-nibbling press is provided with means (5,6,7,8,9,10,11,12,13;14,15) for screening, suppressing or removing the noise generated by the punch (1,101), which means extend within the area of the movable punch (1,101) and of the die, adapting themselves to the position of the said punch during its stroke and always remaining active during the latter. <IMAGE></p> |
