Tool machine for laser cutting of sheet and pipe materials

Machine tool for laser cutting of sheet and pipe materials (25) comprising a support table (10) for the materials (25), a main cutting unit (11), a control panel (12) integrated on the machine, remote controlled and managed by a PC, and a laser cutting head (13), connected to a cooling unit and to a laser generator, which is inserted in the cutting unit (11) and which is moveable over a work table (14) or over a pipe support chuck by means of a numerical control system, characterised in that said laser cutting head (13) is able to emit a laser beam (23), in which the active gain medium is a doped optical fibre (20), wherein the optical radiation is generated, and a plurality of single quartz pumping diodes (21) are able to pump the doped ions, Bragg lens or gratings (22), placed across the laser beam (23) and positioned between said pumping diodes (21) and said materials (25), being also provided in order to create a laser resonant cavity and optical feedback, said laser cutting head (13) being moved by means of a capacitive sensor (24) of said numerical control system, so that the focal point of said Bragg lens or gratings (22) on the materials (25) is maintained at a constant distance (B) from said materials (25).