Micro Cutting Tool Abrasion Surface Bionic Microstructure Design And Optimization

High-speed metal cutting, the rake and flank face of micro cutting tool with chip and between the material surface have strong friction, reduce tool wear and the machining quality of workpiece. A lot of research shows that microstructure improves performance of the friction between the friction pair, reduce the surface adhesion wear, enhance the surface lubrication and improve the bearing capacity, and so on. It provides a new research direction in the rake face of micro cutting tool with microstructure.This article is based on the bionic, using establish some mathematical models of the bionic of dung beetles, shark surface microstructure, then analyzing the anti-friction and anti-wear mechanism of micro-porous, micro-grooves. using 3D design software, design five kinds of micro-porous texture, three kinds of micro-grooves texture on rake surface of the micro cutting tool. Using finite element analysis software, to statics analysis and simulate the turning dynamic analysis. Comparing four simulation results which are the point Mises stress distribution, the main cutting force, the highest temperature of the tool, tool wear, determine the final design which are micro-porous and micro-grooves. In addition, change the size of the pore diameter, then using Deform-3D analyse optimum the pore diameter parameters. Finally, using the machine tool of the high-speed slitter minicars to be cutting experiment, compared with the simulation results that demonstrate the reliability and authenticity of the design.The research results showed that in the micro-porous texture, 4 holes texture of the pore size of 0.11 mm is the optimal solution, the main cutting force to reduce about 28.5%. In the micro-grooves texture, the micro-groove of parallel to the cutting edge is better, the main cutting force to reduce about 26%. Two kinds of texture have abrasion resistance and enhance the cutting tool life. Simulation and cutting experiment together to see: Compared with the micro-grooves, micro-porous antifriction effect is obvious.