Abstract: Machine for punching holes through a longitudinal sheet or wheel rim passing in a horizontal direction, using punches, and also for cutting said sheet to obtain sheet portions or pieces. The machine is characterized in that the punching and cutting operations are performed by a single power unit, such as an oleohydraulic cylinder (2) secured to a frame and positioned at the top in a vertical direction. The shaft of said cylinder is connected to a cutter-holding carriage (4) which, as it moves downwards to cut the sheet (10), brings with it an upper support means (19) that forms part of a punching device (6), the punches of which are guided on a lower front carriage (8) that also forms part of the punching device (6).

Abstract: The invention provides the possibility of incorporating various fixed punching stations within a single compact frame, being applicable especially to the punching of holes in the flanges of angular profiles. The punching cylinders to which the punches and punch-holders are fastened, as well as the dies and the die-holders fastened to the compact frame, allow the punching of holes at the different radial distances required in the flanges of said angular profiles. It is possible since the punch-holders and die-holders have varying eccentricities in their respective seats for the punches and dies. 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 and the compact frame.

Abstract: Machine for punching holes through a longitudinal sheet or wheel rim passing in a horizontal direction, using punches, and also for cutting said sheet to obtain sheet portions or pieces. The machine is characterized in that the punching and cutting operations are performed by a single power unit, such as an oleohydraulic cylinder (2) secured to a frame and positioned at the top in a vertical direction. The shaft of said cylinder is connected to a cutter-holding carriage (4) which, as it moves downwards to cut the sheet (10), brings with it an upper support means (19) that forms part of a punching device (6), the punches of which are guided on a lower front carriage (8) that also forms part of the punching device (6).