Finite Element Simulation And Experimental Study Of Stainless Steel Drilling Process

With the aviation, aerospace, petroleum, chemical metallurgy, food, environmental, automotive and other industries flourish, stainless steel has been widely used. Production practice, drilling is a very common method of stainless steel processing. Stainless steel is difficult to process materials, because of its unique material properties; we can not get better processing efficiency and lower processing costs. Therefore, it’s of great significance to study Drilling Performance of Stainless steel for improving the processing efficiency, but also for other difficult to machine materials for reference.Mathematical model to establish drill bit is the geometric design, manufacture, cutting analysis and modeling on the basis of the drilling process. According to Twist Drill Grinding principle, using Pro/E to complete three-dimensional modeling of Twist drill.In Metal Cutting, cutting process of great significance. Cutting force, cutting temperature and tool wear are the major indicators reflecting the cutting process, especially the cutting force, the use of a broader range. Modeling and simulation of cutting process the cutting tool in improving the design and optimization of cutting parameters have great potential for development. Finite element method has become the research and simulation of cutting process is an effective means.Application of finite element software DEFORM, the work piece, cutting tool material combination of a number of parameters, analysis and definition of the load boundary conditions, defines a tool rake face and chip friction between the state, chip separation criteria and remeshing criteria, completed finite element analysis simulation of pretreatments.Finite element simulation analysis of the cutting performance of stainless steel drilling, establish ordinary twist drills drilling a simulation model of cutting stainless steel axial force and torque on the impact of the law, and has been drilling temperature and the drill wear condition; of the main geometric parameters on the stainless steel twist drill drilling performance, will reduce the twist drill chisel edge, the chisel edge ground into the shape of repair "S" shape (Helical Drill Point), to establish different vertex The drill tip, and the same cutting parameters, geometric parameters of these different twist on the finite element analysis to study the twist drill geometry parameters on the axial force, torque and tool wear.This topic made with ordinary twist drill drilling test results on the orthogonal multiple linear regression analysis, the test drilling force within the empirical formula and comparison of test data and simulation data and found that the cutting force of experimental and predicted values of the indices of the same trends. Also done a bit with a helical stainless steel test drilling, the drill was developed by the Northeastern University, Shenyang, SD-2hand-grinding machine tool grinding complex formed through the test, the cutting parameters in the same helical twist drilling thrust and torque much smaller than ordinary twist drill, drill confirmed the superiority of the spiral surface.