铣削加工表面完整性研究

Research on the Milling Surface Integrity

大量的关键复杂零件采用多轴铣削加工,铣削加工表面完整性对零件的使用性能、寿命以及可靠性具有至关重要的作用。首先分析了表面完整性表征模型;其次介绍了铣削加工表面形貌特征的研究现状,给出了基于加工过程理论建模与仿真,实验分析以及智能算法对表面粗糙度的预测方法;再次介绍了基于铣削加工表面层物理力学性能的研究现状,针对表面残余应力、显微硬度以及微观结构等表面层物理力学性能评价指标,给出了实验分析和建模预测与控制方法;最后在分析当前存在问题的基础上,提出了数据驱动的铣削加工表面三维形貌预测方法和数据驱动的铣削加工表面残余应力预测方法的研究思路,有助于进一步开展铣削加工表面完整性研究。

Multi-axis milling method was widely used for amount of key complex parts,the milling surface integrity played an important role in the performance,service life and reliability of parts.Firstly,the surface integrity representation model was analyzed.Secondly,the research status of surface characteristics in milling was introduced,and the method of roughness prediction based on theoretical modeling and simulation of machining process,experimental analysis and intelligent algorithm was given.Thirdly,the research status of physical and mechanical properties of surface layer based on milling was introduced.Aimed at the evaluation indexes of physical and mechanical properties of surface layer such as surface residual stress,micro hardness and microstructure,experimental analysis,modeling predictions and control methods were given.Finally,based on the analysis of the existing problems,the research direction of data-driven three-dimensional surface prediction method and data-driven surface residual stress prediction method were put forward,which contributed to the further study of the surface integrity of milling.