关键词: 压气机叶轮;数控铣床;整体结构工艺

Abstract: A practical method for formation of envelope surface is introduced in the paper. And a programmed calculation method for manufacturing integral impeller with a four-coordinate NC miller is presented. Besides, the Selection of cutters, the clamping of an impeller and the check by interferometer are discussed The integral impeller used in turbojet engine for missile was manufactured first in China with a four-coordinate NC miller by using the method, and its performance meets design standard.

Key words: Compressor impeller;Numerical controlled milling machine;Integral structure manufacture process