Process Analysis Of High-speed Shearing And Optimal Design Research Of Shearing Institutions Of Steel Tube

With the steady development of the social economy and the progress of science technology, the manufacturing technologies have been improved significantly. In industrial processing process, not only requires to raise processing quality while improve machining efficiency, but also demands to reduce processing operations, economize on raw materials, reduce artificial operation, reduce production costs, reduce the noise, and so on. In the continuous production process of steel tube, online high-speed cutting equipment is one of the key equipments in the whole production line. Its performance will directly affect the quality of steel shear and production efficiency of all lines. Usually, the cutting method of the steel tube has many problems, so the processing quality and the cost were increased.This paper analyzes the shear quality factors of flying shear machine (steel tube high-speed cutting institutions), and the reasonable technical parameters were got through analysis the simulated results. At the same time, the structural principle and the moment principle of the flying shear machine were studied and the optimization solution was proposed. The structures of the flying shear machine more reasonable and the exercise more smoothly.In steel shear process, shearing mode, the depth of horizontal broaching blade, the edge contour of vertical blade, blanking clearance and vertical blade's shape are the main factors of influence the shear quality. Though theoretical analysis the curve of vertical blade, the closer the distance to the peak of the tool is, the smaller the slop change and the thinner and longer the tool nose are, which leads to the bad rigidity and short life of the blade. So the shearing mode of double-cut was applied. In addition, the reasonable angle of vertical blade nose was designed, and the reasonable contour of vertical blade was got. The cutting depth of horizontal broaching blade effects on the force of vertical blade's puncturing the tube wall and the quality of vertical cutting were theoretically analyzed, and the reasonable depth was got. Shearing velocity and blanking clearance affecting on the shearing quality were theoretically analyzed, and the reasonable shearing velocity and blanking clearance were got. Along with the rapid development of computing technology, CAE technology can also be fast developed. Applying the computer in finite element simulation research has many advantages, such as: good systemic, good succession and good continuity. Besides, the research is not limited by time and space. The finite element software of metal plastic forming was applied to dynamic finite element simulation of the steel tube shearing process, and the numerical simulation was compared with the theories to test the theoretical correctness.The flying shear machine was entity measurement, and the 3D model was built using SolidWorks 3D software according to the measurement and revised data. The structural principle and each part of the principle of movement were observed. Cosmos Motion program in the SolidWorks software was applied to analysis of motion simulation, and the displacement curve, speed curve and acceleration curves of major sports parts were output and analyzed. The movement sequence chart of flying shear machine was output to the further understanding of the holistic movement of situation of the flying shear machine. The unreasonable structures were optimized, which exercise more smoothly and enhance shear quality and production efficiency, reduce noise, improve safety coefficient.The application of the flying shear machine can make the steel tube be produced much more quickly, continuously, automatically and high machining quality. Not only achieved to raise processing quality while improve machining efficiency, but also widely applied to shear a variety of materials and wall thickness of tubes.