Research On Cutting Performance Of New Self-locking Drill

Self-locking head drill is a more efficient new drill,Twist drill overall use of a material processing,Self-locking can be a head carbide drill bit,only the tip part of a small amount of carbide material,the blade part of the performance of the general use of ordinary alloy steel,which greatly saves the drill production costs;Head and the knife body with self-locking connection to achieve positioning and clamping,easy loading and unloading,A knife body can be used with a number of bits,head failure,you can directly on the knife body to replace;Self-locking head can be used within the cooling method,The inner cooling holes are at the top and middle of the blade body,Tool cooling and chip removal more quickly.But in the practical application of self-locking head alloy carbide drill bit there are some problems,E.g,The choice of drilling volume needs to be optimized,and the drill bit has a head break problem during the performance test.Replacement of the drill bit in the production application to solve these problems,and constantly optimize the drilling parameters,improve drill bit drilling performance.With the development and application of computer technology in the field of mechanical production,finite element simulation analysis technology has also been applied in mechanical product performance test analysis.It is a practical method to improve the product quality and reduce the production cost by testing the workpiece by using the finite element analysis software simulation analysis method.In this paper,based on the theory of metal drilling,The new type of head can be simulated and analyzed,Through the metal processing finite element analysis software AdvantEdge FEM on the drilling process modeling,simulation analysis,Get the best drilling amount.In this paper,the orthogonal analysis method is used in the simulation analysis,And for each variable were univariate analysis,The effects of spindle speed,feed rate,drill bit diameter on drilling axial force,torque and drilling temperature are analyzed.And the drill bit was subjected to mises stress analysis to find out the key position where the bit was easy to chipping,It is expected to provide effective methods and data for the improvement of drill bit structure and optimization of drilling parameters.In order to verify the feasibility and accuracy of the simulation analysis of the drill bit by using AdvantEdge FEM simulation software,In the machining center for drilling experiments,and through the dynamometer on the drill bit axial force and torque were measured,The simulation data are validated by experimental data,and the conclusion is consistent.Through experimental verification can be concluded,The finite element simulation can be used to analyze the bit cutting process,Can be a good solution to practical problems,But also reducethe cost,Improve the efficiency of the entire testing process,Which provides a very effective method for future drilling research and parameter optimization of tool products.