| 摘要 |
<p>The invention provides the possibility of incorporating various fixed punching stations within a single compact frame (2), being applicable especially to the punching of holes in the flanges of angular profiles (3). The punching cylinders to which the punches (9, 9a) and punch-holders (4, 4a, 4b, 4c) are fastened, as well as the dies (8, 8a) and the die-holders (5, 5a, 5b, 5c) fastened to the compact frame (2), allow the punching of holes at the different radial distances required in the flanges of said angular profiles (3). It is possible since the punch-holders (4, 4a, 4b, 4c) and die-holders (5, 5a, 5b, 5c) have varying eccentricities in their respective seats (24, 21) for the punches (9, 9a) and dies (8, 8a). It is possible to select pairs of punches and dies having same eccentricity. The punch-holders and the die-holders are equipped with means for angular positioning in the respective cylinder (12) and the compact frame (2).</p> |
