整体叶盘数控加工技术研究

 整体叶盘是高推比航空发动机采用的新结构。分析了国际同类整体叶盘制造技术,提出了一种整体叶盘复合制造工艺方案及五坐标数控加工的关键技术,包括叶盘通道分析与加工区域划分、最佳刀轴方向的确定与光顺处理、通道的高效粗加工技术、型面的精确加工技术、加工变形处理和叶片与刀具减振技术等。给出了该研究成果在预研型号中的应用实例,证明了所提方法的先进性和有效性。

Research on the NC Machining Technique of Blisk

Blisk is a new integrated structure of blades and disk actually used in the aero-engine of high thrust-weight ratio. Based on the study of the state-of-the-art of the Blisk manufacturing technology worldwide, a convenient manufacturing process and key technique of 5-axis NC machining are proposed in this paper, Such novelties include analyses of blisk-tunnel feature and partition of manufacturing area, determination of optimal orientation of cutter axis and its refinement, efficient rough-cutting of the tunnel, high-precision shaping, control of Blisk distortion and vibration reduction of cutter and blade. Preliminary results of cutting test verify the validity of the techniques mentioned above.