Structural Optimization And Performance Analysis Of Milling Surface Based On Bionics

High-speed milling processing technology is widely used in the aerospace manufacturing industry and the mold industry,the surface shape of the milling topography will have an important impact on the serviceability and service life of the work-piece.According to the natural surface of some biological bodies with anti-wear,resistance and lubrication characteristics,with reference to the morphological parameters of biological surfaces,functional surfaces prepared by various mechanical processing methods have been widely used in practical engineering.In this paper,microscopic observation of the bionic non-smooth body surface existing in nature is focused on the influence of different arrangement of bionic non-smooth unit bodies on the wear performance of the work-piece.The optimal wear-resistant morphology is obtained by means of finite element analysis.The continuous stamping simulation describes the entire process of the mold wear change law,and the conclusions have important guiding significance for the design of wear-resistant molds and practical engineering applications.The main work was as follows:First,based on bionics,research and analysis were made on the cases of different biological non-smooth wear-resistant bodies,comprehensive pit morphology has the relationship between excellent wear resistance and milling morphology,and it was determined that dung beetles were the research object.The super-view microscopic observation method explored the body surface morphology of the dung beetle.Based on the analysis of the forming mechanism of the milling topography,the bionic non-smooth topography and the milling topography were effectively combined,and a typical Bionic appearance and establishment.Secondly,based on the microcell size of Dung Beetle,different milling parameter ranges were optimized and a simulation model was established.With the help of finite element analysis,wear resistance,temperature,strain and stress were used as indicators to study the wear resistance of different texture angles the best wear-resistant texture angle and the best topography milling parameters were obtained.After that,the punching pressure,punching gap and punching stroke were calculated with reference to the actual working conditions,th e key dimensions of the die design were determined,and the U-shaped bending forming experiment was used to extract the key locations where the die stress concentration and wear were the largest.The change process of mold wear was observed,and the change s of micro-voids before and after the mold service were analyzed by scanning electron microscopy,and the internal cause and mechanism of mold wear were clarified.Finally,a single punching simulation was used to study the punching load.According to the stress of the die,the key parts of the stamping die were replaced equivalently.The change of the load area under different wear heights was analyzed to effectively divide the wear process.In three stages,using the equivalent model to explore the change rule of mold wear at different wear depths,a mapping model of the number of punches and wear depth during the entire continuous stamping process was established to provide a theoretical basis for the design and preparation of high wear-resistant molds.