Fixed-length cutting device for metal profile machining

The utility model provides a fixed-length cutting device for metal profile processing, which comprises a supporting mechanism, and the supporting mechanism comprises a bottom bracket plate and a fixing plate; the bottom of the fixing plate is fixedly connected to the top of the bottom supporting frame plate. The measuring marking body is arranged on the side, away from the top of the clamp, of the fixing plate, the two supporting plates are symmetrically and fixedly connected to the side of the fixing plate, the two ends of the two guide sliding rods are fixed to the adjacent sides of the two supporting plates, and the two guide sliding sleeves are slidably connected to the outer side walls of the two guide sliding rods. According to the metal profile cutting device, the cutting length of a metal profile is accurately set in a measuring mode of a line clamping and marking line, errors possibly occurring when the fixed length is manually measured or observed are avoided, then the lead screw driving module is s