Cutting Simulation And Experimental Research Of Superhard Material Micro-textured Tool Based On ABAQUS

Researchers around the world have found that applying the non-smooth surface texture of organisms to modern manufacturing processes can improve the friction and wear resistance of materials.In the field of tool cutting,selecting a micro texture with appropriate morphology and parameters and manufacturing it on the tool surface can improve the cutting performance of the tool and slow down the wear rate of the tool.Based on the existing research results of tool surface microtexture,this paper applies microtexture to superhard material tools,and uses finite element simulation and turning experiments to study the influence of different microtexture topography and parameters on the cutting performance of the tool.Analyze the anti-friction and anti-sticking mechanism of the micro-texture on the tool surface.The main research contents of this paper are as follows:A three-dimensional model for cutting 6061 aluminum alloy workpieces with different morphologies of superhard material micro-textured tools was established,and the cutting process was simulated by ABAQUS finite element simulation software.Analyze the mechanism of microtexture by comparing the cutting performance of each tool.The results show that the placement of micro-texture can reduce chip friction,accelerate tool heat dissipation,and improve tool cutting performance.The micro-textures of different morphologies have different effects on the cutting performance of the tool,and the micro-textures of parallel grooves have the best cutting performance.Design a single-factor finite element simulation test to explore the influence of parallel groove micro-texture depth,width and texture interval on cutting performance,and analyze the micro-texture anti-friction mechanism from the perspective of micro-texture parameters.The single factor method was used to analyze the influence of tool geometric parameters on tool cutting.The micro-texture parameters and tool geometric parameters were selected as optimization factors to design a four-factor,three-level orthogonal experiment.The matrix analysis method was used to optimize the tool multi-dimensional parameters to reduce the cutting heat and cutting force.The results show that the collaborative optimization of micro-texture parameters and tool geometry parameters can achieve complementary advantages and improve the cutting performance of the tool to a greater extent.A reasonable combination of tool parameters can achieve better cutting performance.According to the results obtained by parameter optimization,the parallel groove micro-texture is produced on the surface of the cemented carbide tool by using laser processing technology.The turning experiment of micro-textured tool cutting 6061 aluminum alloy under two working conditions of dry cutting and cutting fluid-assisted cutting is designed.The wear of tool front surface was observed by electron microscope.The test results show that the placement of micro-texture can improve the cutting performance of the tool,reduce the chip contact area,relieve the high temperature and high pressure state of the tool tip,and inhibit the chip bonding phenomenon and the generation of built-up edge.With the aid of cutting fluid,the effect of hydrodynamic pressure and secondary lubrication make the anti-wear and anti-stick performance of groove micro-textured tools more significant.