Optimization of the process parameters for micro-milling thin-walled micro-parts using advanced algorithms

被引:0
作者
Peng Wang
Qingshun Bai
Kai Cheng
Liang Zhao
Hui Ding
机构
[1] Harbin Institute of Technology,School of Mechanical and Electrical Engineering
[2] Brunel University London,Department of Mechanical and Aerospace Engineering
来源
The International Journal of Advanced Manufacturing Technology | 2022年 / 121卷
关键词
Thin-walled micro-scale parts; Micro-milling; Fractal dimension; Principal component analysis; Advanced optimization algorithms;
D O I
暂无
中图分类号
学科分类号
摘要
The surface integrity and machining accuracy of thin-walled micro-parts are significantly affected by micro-milling parameters mostly because of their weak stiffness. Furthermore, there is still a lack of studies focusing on parameter optimization for the fabrication of thin-walled micro-scale parts. In this paper, an innovative approach is proposed for the optimization of machining parameters with the objectives of surface quality and dimension accuracy, which integrates the Taguchi method, principal component analysis method (PCA), and the non-dominated sorting genetic algorithm (NSGA-II). In the study, surface arithmetic average height Sa, surface root mean square height Sq, and 3-D fractal dimension Ds are selected to evaluate surface quality. Then micro-milling experiments are conducted based on the Taguchi method. According to the experimental results, the influence of machining parameters on the processing quality has been investigated based on the cutting force and machining stability analysis, and the significance of machining parameters can be determined by range analysis. Besides, regression models for the responses are developed comparatively, and the PCA method is employed for dimension reduction of the optimization objective space. Finally, two combinations of machining parameters with the highest satisfaction are obtained through NSGA-II, and verification experiments are carried out. The results show that the surface quality and dimension accuracy of the thin-walled micro-scale parts can be simultaneously improved by using the proposed approach.
引用
收藏
页码:6255 / 6269
页数:14
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