| 摘要 |
<p>A press brake (1), unusually capable of a high processing accuracy and short cycle times, comprises a supporting structure (2), said supporting structure comprising: two flanks or shoulders (3, 4) located at the press brake sides; said two flanks (3, 4) being connected together superiorly by at least one upper crossbeam (5), and said two flanks (3, 4) being connected together inferiorly by a beam or apron or lower bench (7), secured in a non- movable manner relative to said flanks (3, 4); in which said lower bench (7) has a first slot (15) cutting the bench body (16) forming a first window (17), said first window (17) opening on the edge (10) of said bench (7) forming a first portion (18) of the bench body (16), which, when the bench (7) is stressed by the action of the rammer (14), deforms differently from a contiguous portion (19) of the bench body (16); and said lower bench (7) has a second slot (20) cutting the bench body (16) forming a second window (21), said second window (21) having a window edge (22) which is closed so as to avoid that the second window (21) opens on the edge (10) of said bench (7); said second window extending substantially along a direction inclined relative to said upper edge (11) of the bench and partially overlapping said first window (17) in a direction transversal to said upper</p> |
