航空发动机精锻叶片数字化数控加工技术

航空发动机为飞机提供所需的动力,是现代航空产业发展的重要基石。现代航空需要大涵道比、大推重比以及服役寿命较长的新型航空发动机。航空发动机中的叶片多采用精锻毛坯精加工而成,精锻叶片相较于小余量模锻叶片在原材料利用率、减低制造成本、叶片强度等方面都有着较大的提升,但是高精度要求的精锻叶片对后续的精密数控加工提出了更加严苛的要求。文章在分析航空发动机精锻叶片精密数控加工难点,同时对如何采用数字化加工技术完成精锻叶片的高效、高精度加工进行了分析阐述。

Aero-engine provides the necessary power for aircraft, which is an important cornerstone of the development of modern aviation industry. Modern aviation needs a new type of aero-engine with large culvert ratio, large thrust-weight ratio and long service life. The blades in aero-engine are mostly machined by precision forging blanks, and the precision forging blades have a great improvement in the utilization rate of raw materials, thusreducing the manufacturing cost, blade strength and so on compared with the small margin die forging blades. However, the precision forging blade with high precision poses more stringent requirements for the subsequent precision NC machining. In this paper, the difficulties of precision NC machining of aero-engine precision forging blades are analyzed, and how to use digital machining technology to complete the high efficiency and high precision machining of precision forging blades is analyzed and expounded.