The invention provides a cutter, which includes a frame, a
workstation equipped thereon, a fixed panel equipped on the back side, a material clamping base equipped on the
workstation; a upper and a lower support connected in a pivoted connection, wherein, the lower support is fixed above the
workstation; the upper panel is connected above the support
saddle; a upper panel connected to the upper support, a variable-depth adjustment mechanism, a
cutting device, a feeding mechanism and a controlling mechanism. During
processing, the material rod is installed on the material clamping base foot firstly, and is hanged with heavy in the slideway, one end of the material rod is installed in the clamping foot. Abrasion wheel pieces are installed according to standards and nuts are fastened. The
cutting electric motor is started to drive the abrasion wheel pieces to rotate, and then the main
electric motor is started for
cutting. The main
electric motor drives the speed-changing box, and then the speed-changing box drives the driving shaft to rotate by the
sprocket chain. When the abrasion wheel piece cuts and returns, the movable clamping foot looses and the material rod protrudes, and then the movable clamping foot clamps again for cutting.