中文摘要：

作为汽车产销量第一大国,我国的汽车模具加工能力远远不能适应汽车更新换型的需要,中高档轿车关键覆盖件模具铣削加工质量还达不到设计要求。通过汽车大型覆盖件淬硬钢模具的铣削加工特征和难点的分析可知,铣削过程建模与仿真分析、加工工艺系统动力学特性和铣削稳定性分析、汽车覆盖件淬硬钢模具铣削加工用刀具研制、自由曲面数控编程技术及工艺规划是汽车模具高精度铣削加工的研究重点,总结归纳这几个方面的研究现状,同时探讨汽车覆盖件淬硬钢模具铣削加工仍有待于进一步解决的问题,为其后续研究方向提出一些建议。

英文摘要：

With the largest automobile production and best automobile sales around the globe, automobile mould processing capacity is far from being adapted to the needs of the car replacement in China. The milling quality of high-grade car key covering parts mould still can not meet the design requirements. The analysis of hardened steel mould of car large cover milling characteristics and difficult points shows that the modelling and simulation of milling process analysis, processing system dynamic characteristics, the milling stability analysis, the development of cutting tools for automotive covering parts hardened steel mould milling, free surface NC programming technology and process planning are the keys of automobile mould processing. Summarized the status of research in these areas as well as explore the car cover milling hardened steel mould remains to be the further problem. Put forward some suggestions for future research directions.