Abstract: Aiming at the problems of chatter in the milling process of thinwalled parts with complex curved surfaces, based on the regenerative chatter theory, the causes of chatter in the milling process of thinwalled parts with complex curved surfaces were analyzed. And the relationship between the optimization strategy of technology to suppress chatter and the analysis of chatter stability was expounded. On this basis, the current research status of frequency domain method, time domain method, experimental method and process optimization method in milling stability analysis of complex curved surface were summarized. The advantages, disadvantages and applicable conditions of chatter suppression methods for thinwalled parts with complex curved surface at home and abroad at this stage were evaluated, and the nonuniform residual process optimization strategy for fiveaxis machining of integral impeller was put forward. Finally, by analyzing the factors affecting flutter stability, the research direction of flutter suppression for thinwalled parts with complex curved surfaces in the future was pointed out. The results show that the flutter suppression of thinwalled parts with complex curved surfaces is more complex than that of conventional milling. The flutter suppression can be effectively suppressed by establishing a threedimensional process system stability model and considering the change of workpiece modal parameters.

Key words: complex surface; milling flutter; stability analysis; nonuniform allowance process optimization; review