Study On Micro-Texture Of Elliptic Opening Bias Parabola-Like On Sliding Bearing Surface

As sliding bearings are extremely widely used parts in production practice,improving their carrying capacity and operational reliability will have a huge impact on the overall performance of the equipment in which the sliding bearings are located.Surface micro-texture has a great improvement in reducing surface friction and increasing bearing capacity.It has a unique effect on improving the surface performance of the friction pair.Therefore,the surface micro-texture is applied to the surface of the sliding bearing in order to reduce the friction of the sliding bearing.Wear and improve its bearing capacity,so as to ensure the stable and reliable operation of the whole machine associated with it.Relying on the Liaoning Provincial Department of Education Project— "Multi-objective Optimization Design Theory and Manufacturing Key Technology of Porous Micro-texture on Friction Pair Surface"(LJ2020ZD001),this paper studies the parabolic-like micro-texture of sliding bearing surface with elliptical opening and its main research content And the conclusions reached are as follows:First,select a sliding bearing as the research prototype,and analyze the bearing performance and friction performance of the sliding bearing through simulation analysis;secondly,construct the elliptical offset parabolic micro-texture,study the load-bearing performance and friction performance of the micro-texture model,and analyze it The influence of the sliding speed of the upper wall on its bearing capacity and friction coefficient;then choose the ellipse’s semi-major axis length and minor axis length,microtexture depth and the offset of the symmetry axis(ellipse central axis and parabolic symmetry axis)to design four Factor five-level orthogonal experiment,and analyze and calculate the results of the orthogonal experiment by gray correlation analysis to determine the microtexture of the optimal shape parameter;finally select the microtexture starting angle,wrap angle and microtexture inter-axis As the distribution parameter of the micro-texture on the surface of the sliding bearing,the optimal arrangement is determined by the response surface optimization design,and the model’s best predicted value and the simulated value are compared,and the optimal micro-textured sliding bearing and the prototype sliding Performance.It is proved that the micro-texture is effective in improving the bearing performance of the sliding bearing surface and reducing its surface friction coefficient.The research results of this paper can be applied to various machinery industries such as robots,aerospace vehicles,advanced manufacturing systems,weaponry and high-speed railways,and are of great significance for improving the level of my country’s equipment manufacturing industry.The paper has 46 pictures,18 tables,and 79 references.