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薄壁零件加工残余应力变形预测及控制技术研究现状
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Abstract:
薄壁零件的加工质量直接影响航空、兵器等国防工业高端装备的服役性能。然而，作为典型的弱刚度零件，在整个制造流程中因残余应力引入会导致的严重加工变形，难以满足制造精度及质量的要求。本文在分析残余应力诱导变形产生机理的基础上，对现有的残余应力变形预测方法进行了分类总结，阐述了相关方法的特点。同时，根据变形的主要来源，从初始残余应力及切削残余应力两个方面对现有的残余应力变形控制方法进行了归纳总结。最后，对复杂薄壁零件加工残余应力变形及其控制技术的未来研究进行了展望。
The processing quality of thin-walled parts directly affects the service performance of high-end equipment in the defense industry such as aviation and weapons. However, as a typical weak stiff-ness part, the serious machining deformation caused by the introduction of residual stress in the entire manufacturing process is difficult to meet the requirements of manufacturing accuracy and quality. Based on the analysis of the residual stress-induced deformation mechanism, the existing residual stress deformation prediction methods are classified and summarized in this paper, and the characteristics of the related methods are expounded. At the same time, according to the main sources of deformation, the existing residual stress deformation control methods are summarized from two aspects: initial residual stress and cutting residual stress. Finally, the future research on residual stress deformation and control technology of complex thin-walled parts is prospected.
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