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提出研制叶轮型面半自动成形铣床的必要性，并介绍了整机和主要部件的结构。采用成形铣削加工叶轮型面，保证了加工精度，提高了生产效率
The necessity of developing impeller profile semi-automatic forming milling machine is put forward and the structure of the whole machine and the main components are introduced. Using forming milling impeller surface to ensure the processing accuracy and improve production efficiency