Stop Cut To Length Line can realize the fixed size cutting according to different specifications, avoiding the possibility of cross-increasing bars of different sizes and reducing the return rate in the downstream processing. In addition, stop rotary shear suitable for materials with high size and shape requirements. High-precision automatic control systems such as ray sensors are required. By controlling the cutting speed of the cutting machine, it gradually slows down the path and finally stops, so as to achieve the purpose of rapid cutting and positioning of the material.