Abstract: A cutting unit with modular structure, comprising a machine (10), shaped with one or more bridges (11) and managed by a numeric control management software, which can use one or more respective cutting heads (15), suitable for moving in two or three dimensions and angularly in space, so as to carry out multiple processing operations and types of cut, such as water jet or hydroabrasive cutting, laser cutting and/or plasma cutting and/or oxycutting and/or “milling” chip removal; the machine (10) in question, thanks to the particular design in modules (26) and/or to one or more opposite working bridges (11), allows the maximum flexibility and personalisation, according to the client's requirements.