Surface Structure Construction And Wear Resistance Analysis Of Bionic Flanging Roller

As the most important means of transportation in People’s daily life,the appearance quality of automobile mainly depends on the forming quality of body-in-white coverings.As the end executing part of the rolling robot,the abrasion resistance of the roller plays an important role in the forming quality of the body-in-white coverings.However,in the practical application,the direct contact between the roller and the plate is easy to cause wear,which directly affects the quality of the rolling forming.Therefore,this paper considers using the method of bionics to extract the surface features of three different parts of the shell surface of pearl oyster,and combines the biological non-smooth texture with the roller structure to reduce the wear of the roller,thus improving the wear resistance and service life of the roller in the rolling process.In this paper,the application of the non-smooth surface morphology of pearl oyster shell surface to the car wheel cover package edge rolling robot operating components-at the end of the design of roller,based on the pearl oyster shell non-smooth surface excellent biological characteristics,to develop more excellent performance of the bionic roller structure,compared with the ordinary roller has high resistance to wear,long service life.From the surface structure of pearl oyster shell by well depth microscope to observe the microstructure of pearl oyster shell surface,design of bionic structure of roller,through the finite element analysis with the bionic non-smooth surface stripe roller bearing load capacity under the condition of static and dynamic state of energy loss,has been based on bionic streaks on the surface of the pearl oyster shell non-smooth structure in abrasion resistance,stress state,energy loss degree results are well in the ordinary roller structure.Firstly,a mathematical model of wear depth and rolling friction coefficient was established by referring to Archard wear model,the mathematical model of wear depth and rolling friction coefficient was established,and the relationship between rolling friction coefficient and wear amount in the wear process of roller was determined.Based on the boundary conditions of rolling friction,the energy loss formula and friction formula were established.Secondly,the non-smooth surface texture of the biological surface was analyzed at the macro and micro level.Combined with the actual parameters of the roller,DC04 steel with good toughness and wear resistance was selected as the material to map the non-smooth surface texture to the surface of the roller structure in a certain proportion,and then the roller sample was prepared.Then,ABAQUS software was used to simulate and analyze the bionic roller under the same working condition,15 groups of bionic roller in the process of friction loss energy,by comparing the simulation results,the type of corrugated roller in the rolling process by the friction to produce the least amount of energy,reduce the rate of37.36%～76.22%,the perpendicular type stripe roller energy to reduce the rate of28.90%～72.83%,and the diamond stripe roller not only reduce the energy,but energy increases at a rate of 27.21%～98.71%;The wear resistance of 15 groups of rollers with vertical stripe,corrugated stripe and diamond stripe is 18.89%～32.78%,52.22%～65.56%,23.89%～38.89%respectively by wear test.The surface microstructure of 15 groups of rollers was analyzed.The results showed that the wear resistance of corrugated stripe roller was the best,followed by vertical stripe roller and diamond stripe roller.The wear traces were analyzed and the wear situation was discussed.Finally,the relationship curves between wear quality and wear times,friction loss energy and time of ordinary roller and bionic roller are listed by experimental method,and then the wear resistance of vertical,corrugated and diamond striped roller is compared,the results show that under the same boundary conditions,among the five groups of corrugated striped rollers whose aspect ratio has not been optimized,the wear quality of the corrugated stripe bionic roller is the lowest,and the best depth-width ratio is 0.86.The wear quality and wear depth of the corrugated stripe bionic roller are 1.18 g and 0.83 mm lower than those of the ordinary roller,respectively,and the wear quality and wear depth are 65.56%and 66.95%lower than those of the ordinary roller.From the perspective of friction energy loss,the ripple stripe bionic roller has the lowest friction energy in the rolling process,followed by the vertical stripe roller and the diamond stripe roller.Based on the excellent performance of corrugated stripe roller,this paper selects its aspect ratio as the research object,optimizes the depth-width ratio iteratively,and simulates the bionic roller.The corrugated stripe roller with the aspect ratio of 0.6375 is obtained as the optimal roller structure.The minimum maximum principal stress is only 247.2MPa,the total strain is only 6.94e^-6,the equivalent strain in the direction of Z axis is only4.83e^-6,and the minimum energy value generated in the process of rolling friction is48687.6J.Compared with the ordinary roller,the maximum principal stress is reduced by 171.5MPa.The friction energy value decreased by 77763.4J,the total strain value decreased by 9.78e^-4 and 4.67e^-4 compared with the common roller,which dispersed the surface load distribution,improved the bearing capacity and structural stability,and the energy generated by rolling friction was smaller,and the thermodynamic performance was significantly improved...