原位自生TiB_2/Al复合材料车削参数多目标优化方法  

Multi-Objective Optimization Method for Cutting Parameters of In-Situ TiB_2/Al Composites

作　　者：宋国栋[1] 汪文虎[1] 蒋睿嵩[1] 林坤阳 熊一峰[1] 

机构地区：[1]西北工业大学现代设计与集成制造技术教育部重点实验室,西安710072

出　　处：《航空制造技术》2016年第17期62-66,共5页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金项目(51475374)

摘　　要：原位自生TiB_2/Al复合材料具有密度小、比强度高、高耐磨等特点,在航空航天领域具有广泛的应用前景。主要针对TiB_2/Al复合材料车削参数对表面粗糙度的影响进行探索性研究。首先,以车削速度、进给速度、车削深度为对象,基于单因素试验研究了车削参数控制域。进一步在控制域内设计正交试验,并基于试验结果研究了表面粗糙度与车削参数的映射关系,推导了材料去除率模型。最后,以表面粗糙度和材料去除率为优化目标,提出并研究了基于GA-Pareto的车削参数多目标优化方法,并通过试验验证了该方法的可行性和有效性。The in-situ TiB2/Al composites have been enormously used in aerospace due to their superior properties, such as lower density, higher strength to weight ratio and superior wear resistance. In this paper, a multi-objective optimization method for turning parameters of in-situ TiB2/Al composites was proposed. Firstly, feasible region of turning parameters was studied based on single factor experiments corresponding to turning speed, feed rate and turning depth. Secondly, orthogonal experiment was designed in feasible region. And the relationship of cutting parameters and surface roughness was established based on experiment. Moreover, the model of material removal rate was inferred. Finally, the cutting parameters were optimized by using Pareto-based multi-objective genetic algorithm with two objectives including material removal rate and surface roughness. The experiment results show that the proposed method is feasible and effective.

关 键 词：TIB2/AL复合材料 表面粗糙度 车削参数优化 遗传算法 

分 类 号：V261.21[航空宇航科学与技术—航空宇航制造工程]