由于厚板冲压毛坯具有省材,机械强度好,生产率高和加工成本低等优点,已越来越广泛地用于航空发动机加工工艺中。目前,国外在加工中小型发动机中应用较多,特别对小型发动机的各机匣安装边,需切削加工的薄壁 Due to its advantages of saving material, high mechanical strength, high productivity and low processing cost, the blank stamping blank has been used more and more widely in the processing of aeroengines. At present, foreign countries in the processing of small and medium-sized engines more used, especially for small engine casing installed on each side, the need to cut the thin-walled