【摘要】 针对航空发动机整体叶盘精加工过程中易产生颤振和加工变形的难题，开展了整体叶盘变形控制技术研究，设计出一种基于反向分段加工的光固化辅助支撑夹具。首先依据工件分段刚性化原则说明反向分段加工对于减少工件加工变形的有效性。其次设计了包括压紧块、仿形块、固定板在内的三段式叶盘加工辅助支撑夹具，通过光敏树脂填充仿形块与叶片之间的缝隙，为整体叶盘的加工提供良好支撑。并对夹具支撑性能进行了测试，验证了夹具的可靠性。最后，采用叶盘模拟件进行了反向分段加工验证试验，结果表明，所设计的夹具减小了叶盘截面线加工误差，最大让刀变形量由0.1 mm下降到了0.05 mm，验证了光固化辅助夹具对整体叶盘加工具有较好的变形控制作用。更多还原

【Abstract】 In response to the problem of chatter and deformation during the precision machining process of the aircraft engine blisk, research on deformation control technology of the blisk was carried out, and a light-curing auxiliary support fixture based on reverse segmented machining was designed. Firstly, the effectiveness of reverse segmented machining in reducing deformation of the workpiece is explained based on the principle of piecewise rigidity during the machining process. Secondly, a three-section auxiliary support fixture was designed, including a compression block, a profiling block, and a fixing plate. The gap between the profiling block and the blade was filled with photosensitive resin to provide support for the machining of the blisk. And the support of the fixture was tested to verify the reliability of the fixture design. Finally, a validation experiment was conducted on reverse segmented machining using a blisk simulation component. The results show that the designed fixture reduced the machining error of the blade disc cross-section line, and the maximum tool deformation was reduced from 0.1 mm to 0.05 mm. This verified that the auxiliary fixture has a good deformation control effect on the blisk.更多还原