Research On Anti-Friction Of Bionic Micro-Texture Cutting Tool

High speed, high efficiency, low carbon and environmental protection are the overall trend of metal cutting in the modern world. But the increasing of tool life and cutting efficiency is restricted by the rapid wear of tool. Research of bionic tribology shows that:non-smooth surface (surface texture), which having certain microstructure unit, has a smaller frictional resistance. But not the smoother the friction surface is, the smaller the friction is. Reasonable surface microstructure can play a good part in anti-friction, which providing a new research direction for realizing the anti-friction, anti-wear and improving cutting efficiency of cutting tool through the changing of microscopic geometry appearance of tool surface.In this paper, bionic micro-texture is applied in the surface design of carbide tool with laser processing technology. The anti-friction effect of bionic micro-texture to carbide tool is studied by friction-wear experiments and cutting experiments. The main research work is as follows:(1) Reasonable processing parameters are selected, and then micro-textures (grooves) on the carbide tools surfaces are processed with laser processing technology. Lastly, the morphology parameters of grooves are measured.(2) Micro-texture sample and45steel are made up as frictionpair. Friction and wear experiments are conducted under the condition of oil lubrication. The results show that: the friction coefficient of carbide tool surface can be availably reduced with micro grooves. The friction properties are observably affected by factors such as groove width, average spacing and density under different loads condition. So, the best anti-friction effect can be got through the reasonable choosing of micro grooves parameters.(3) The two-dimensional orthogonal cutting processes of micro-texture and non-micro-texture carbide tools are analyzed by ABAQUS. The stress distribution of tool during the cutting process simulation is mainly analyzed.(4) Experiments of micro-texture and non-micro-texture carbide tools are contrasted through orthogonally cutting with45steel. The results show that:cutting forces can be effectively reduced with micro-texture tool. Especially, the micro-texture tool has the best effect when the direction of grooves is vertical to the direction of chip’s motion, and the wear degree of its front flank is also slighter.