For the keel equipment, we have developed a patented die shear with a higher speed of up to 100 meters. The reciprocating time reaches 0.15s (low-speed shearing reciprocating time is 2s). Modular assembly, reasonable structure, convenient disassembly and maintenance, The maintenance is simple and easy to learn, reducing the skill requirements of maintenance personnel, and adding graphite, tin bronze and other wear-resistant materials to increase the shear life. The low-grade shearing system has low precision and high wear. It will increase the gap between the blades during long-term use, which will cause burrs to hurt the hand, cut continuously, and jam. It is a waste of raw materials and frequent adjustments and waste of labor. Serious When the two blades collide and break, a lot of maintenance effort and money are wasted.