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整体叶盘有良好的结构完整性、轻质化、装配环节少、装配精度高等优点,已被广泛应用于航空发动机中。根据整体叶盘的切削加工特征,将其简化为整体叶盘基准件,从数控编程和加工技术两方面实现整体叶盘的高质量加工。首先,利用Hyper MILL软件对整体叶盘基准件进行数控编程,优化获得理想的刀具路径,保证高效高质量的零件加工。然后,利用DMU-70V五轴加工中心对钛合金TC4整体叶盘基准件进行切削加工,在整体叶盘基准件叶片和流道几何特征的精加工时,选用不同型号的立铣刀,并监测加工过程中的切削力。最后,对加工后叶片和流道加工表面形貌进行测试分析,并结合切削力对比分析国产刀具和进口刀具对钛合金整体叶盘的切削加工性能。
The overall leaf disc has good structural integrity, light weight, less assembly steps, high assembly accuracy, has been widely used in aircraft engines. According to the cutting characteristics of the overall leaf disc, it will be simplified as the overall leaf disc reference parts, from the NC programming and processing technology to achieve the overall quality of leaf disc processing. First of all, using HyperMILL software to NC programming of the whole leaf disc base, optimize the ideal tool path to ensure efficient and high quality parts processing. Then, using the DMU-70V five-axis machining center to cut the titanium alloy TC4 overall leaf disc reference material, when the overall leaf disc reference blade and the geometric features of the flow channel finishing, choose different types of end mills, and monitoring Cutting force during machining. Finally, the machined surface morphology of blade and runner is tested and analyzed, and the machining performance of the integrated leaf disc of domestic titanium alloy is analyzed by comparing with the cutting force.