Dynamic Simulation Of Hot Saw Blade Based On ANSYS

Hot sawing machine,as a fixed-length sawing tool in various calendering and hot extrusion workshops,has become an important production equipment in modern calendering production line because of its simple structure,high production efficiency and convenient maintenance advantages.Sawing parameters of hot saw are mainly blade structure and technological parameters.Saw blade structure includes: sawtooth shape parameters,matrix thickness,diameter.The technological parameters of saw blade include rotation speed and feed speed.The shape parameters of sawtooth are the front angle of the sawtooth,the upper angle of the sawtooth,the spacing of the sawtooth,the radius of the root of the tooth,etc.In this paper,aiming at the inclination and unevenness of the saw face of U75 V rail in the process of hot saw cutting high-temperature rail in production,the stability and mechanical parameters of the saw blade are analyzed by modal analysis and dynamic simulation,and the rationality of the saw blade structure is studied.At the same time,the geometric structure and some technological parameters of the saw blade are optimized,so as to improve the sawing quality.Firstly,the model of sawing tool is established by using three-dimensional software to study the plane stress of the saw blade in the process of hot sawing,and the influence of temperature change brought by heat conduction on the stability of the saw blade in the process of sawing.The dynamic characteristics of the saw blades with different diameters,thicknesses and diameter of the chuck are analyzed and studied by using ANSYS Workbench finite element simulation analysis software.The effects of three factors on the dynamic characteristics of saw blades are studied to obtain the dynamic characteristics of saw blades with different diameters,thicknesses and sizes of chucks.Anasys LS-DYNA finite element simulation analysis software was used to simulate the high-temperature track sawing process of saw blade.The changes of stress,temperature,sawing force and deformation of saw blade were observed during the sawing process.Orthogonal experiments were designed for sawtooth diameter,thickness and rotating speed by SPSS software.The effects of three factors,such as saw tooth diameter,thickness and rotating speed,on the equivalent stress,temperature,cutting force and deformation ofthe saw blade are studied,and the optimal combination of structural and technological parameters is obtained.Improve the stability and reliability of saw blade in the process of rail sawing,and provide valuable theoretical guidance for precise sawing work.