Fecha de publicación: 26/02/2021 Fuente: WIPO "circular economy" The utility model relates to the technical field of machining, in particular to a cutting device for waste steel treatment, which enables a saw disc to move freely in the transverse direction and improves working efficiency and practicability. The utility model discloses a multifunctional sawing machine which comprises a machine body, a base, a first telescopic air cylinder, a sliding rail, a workbench, a first lead screw, a second telescopic air cylinder, a rotating shaft, a motor, a saw disc, a first sliding block, a guide rail, a first lead screw sleeve and a first hand wheel. The lower endof the first telescopic air cylinder and the sliding rail penetrate through the loose assembly, the sliding rail can freely slide in the sliding groove, a lifting lug is arranged at the upper end ofthe first telescopic air cylinder, the middle of the first lead screw is connected with the second telescopic air cylinder, and the second telescopic air cylinder is connected with the motor through arotating shaft. The first sliding block is fixed to the upper end of the first lead screw sleeve and used in cooperation with the guide rail.