【摘要】 数字孪生建模技术具有实时同步、忠实映射、高保真度的特性,被认为是实现物理与信息世界互联互通的重要手段。介绍了数字孪生理论的研究和发展现状,分析了数字孪生技术的应用情况;以数字孪生在钛合金零件微细铣削加工领域的应用为背景,分析了微细铣削工艺过程、刀具状态、铣削质量以及微细铣削加工装备等方面数字孪生建模与应用技术的研究进展;最后,提出了微细铣削数字孪生建模研究拟解决的关键问题。建立融合机床–刀具–工件的数字孪生仿真模型,对拓展数字孪生的应用范畴,提升微细铣削的加工效能,推进智能制造技术发展具有重要的理论意义和实用价值。更多还原

【Abstract】 With the characteristics of real-time synchronization, loyal mapping and high-fidelity, digital twin is considered as an important means to realize the interconnection between the physical and information world. In the present work, the state of art and applications of digital twin theory are discussed in detail. Additionally, the paper analyses the progress on digital twin modelling and application in the micro milling of titanium alloy parts, in terms of micro milling technique process, cutting tool status, milling quality and microscale machining equipment. Finally, the essential issues that should be solved in the study of micro milling digital twin modeling, are presented according to the analysis of digital twin application. The establishment of a digital twin simulation model integrating machine, cutting tool and workpiece has important theoretical significance and practical value, which is able to expand application scope of digital twin, improve the efficiency of micro milling, and promote the development of intelligent manufacturing technology.更多还原