Fixing device for building material cutting

The utility model discloses a fixing device for building material cutting. Workbench, supporting plates are arranged on the two sides of the top of the workbench. Lower clamping blocks are fixedly connected to the top of the supporting plate, vertical sliding rods are fixedly connected to the tops of the lower clamping blocks, vertical sliding sleeves are slidably connected to the surfaces of thevertical sliding rods, upper clamping blocks are fixedly connected to the tops of the vertical sliding sleeves, transverse sliding sleeves and transverse sliding rods are fixedly connected between theupper clamping blocks, and the transverse sliding sleeves are slidably connected with the transverse sliding rods. According to the utility model, the workbench, the supporting plate, the lower clamping block, the vertical sliding rod, the vertical sliding sleeve, the upper clamping block, the transverse sliding sleeve, the transverse sliding rod, the threaded rod, the threaded sleeve, the turntable, the slideway, the sli