中文摘要：

针对一类典型流线型曲面——叶片的高效数控铣削加工方法研究,提出了基于加工系统动力学仿真分析的高效切削参数优化技术,该方法是提高切削加工效率,保证零件加工精度和表面质量的有效手段。首先,辨识得到加工零件材料的铣削力系数;其次,利用锤击试验分别得到机床-刀具系统及弱刚性零件结构的动态特性,同时利用有限元方法进行模态分析,并与试验结果进行对比分析,可辅助验证锤击试验结果的正确性,在此基础上仿真得到铣削颤振稳定域曲线,然后对建立了基于加工系统动态稳定性的高效数控铣削加工参数优化系统进行高效铣削参数优化;最后,依据优化的铣削参数制定零件铣削加工工艺,试验得到了加工质量合格的叶片,其加工效率较传统方法有显著的提高。

英文摘要：

Research on high efficient CNC machining for a type of classical streamlined curve, a method based on dynamic simulation of machining system and high efficient parameter optimization is presented to improve machining efficiency and ensure surface quality. Firstly, the material milling force coefficients are identified by e-cutting. Secondly, the dynamic characteristics of machine tool system and weak rigidity work-piece structure are obtained by hammer tests, and model analysis is carried out by finite element method simultaneously to ensure the validation of hammer tests, then the lobe of chatter stability is simulated based on hammer tests. Thirdly, a high efficient parameter optimization based on dynamic stability of machining system is established. Finally, on the basis of optimized milling parameters to design machining process, a qualified blade is machined by tests, and the processing efficiency is significantly improved compared with traditional method.