| Citation: | LIN Daojie, LIANG Yi, ZHU Yanfang, et al. Wear optimization design of rolling linear guide based on Kriging model[J]. Journal of Aerospace Power, 2024, 39（8）：20220078 doi: 10.13224/j.cnki.jasp.20220078
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In order to improve the wear resistance of rolling linear guide, combined with the wear test and theoretical analysis, the maximum impact force, maximum contact stress and friction resistance are taken as optimization goals. The constraint function of slider reaction force and the range of structural parameters were determined by desgin requirement. By analyzing the parameter sensitivity, initial contact angle, curve ratio of the slider raceway, ball diameter and the increment of the rail height were selected as variables; The optimization used CCRD and Kriging response surface to construct the agent model. Though the NSGA-Ⅱ algorithm, the friction resistance and maximum impact force of the structure were reduced by 2.09% and 15.00% respectively, while the maximum contact stress increased by only 4.33%. The ball diameter decreased from 5.56 to 5.1744 mm, and the initial contact angle decreased from 45 to 38.878°. Though Spearman correlation analysis, it is known that the coefficient value between the ball diameter and the slider reaction force is 0.23, and the coefficient value between the initial contact angle and slider reaction force are −0.82. These two variables balance each other to achieve the optimal solution in optimization.
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