Importance

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Abstract

A bending machine for sheet metal comprises a bending assembly (2) provided with a tool holder crosspiece (3) which is mobile and supports a set (20) of bending tools (40, 41, 42, 43, 44) which are aligned, and mutually positionable, along a first longitudinal direction (A) so as to form predetermined compositions (CI, C2, C3, C4) of bending tools suitable to bend a workpiece (50) according to respective defined bending lines; the bending assembly (2) comprises moving means (5, 6) to move the bending tools (40, 41, 42, 43, 44) along the crosspiece (3), the set (20) of bending tools comprises, arranged adjacent and in sequence starting from an end (3a) of said crosspiece (3): four first bending tools (41) having a width of X+p, one second bending tool (42) having a width of X+2−p, one third bending tool (43) having a width of X+3−p, one basic bending tool (40) having a width of X, three third bending tools (43), one fourth bending tool (44) having a width of X+4−p, two basic bending tools (40), one first bending tool (41), one second bending tool (42), a further set (21) of basic bending tools (40), wherein X is a basic width in mm of said basic bending tool (40) comprised between 30 and 70 mm, and p is a step between two lengths of subsequent tool compositions (CI, C2, C3, C4), comprised between 5 and 20 mm; the combination of one or adjacent more tools (40, 41, 42, 43, 44) of said set (20) of bending tools allowing obtaining bends having all the lengths starting from a minimum bending length equal to said basic width (X) with said step (p).

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First Claim