关键词: 云制造, 制造服务, 航空复杂结构件, 动态加工特征, 遗传算法

Abstract: To realize the transform from NC machining of complex aircraft structural parts to cloud manufacturing mode,an in-process oriented cloud manufacturing service generation method for parts was presented.The concept of dynamic machining feature was provided,based on which manufacturing task description standard was established both for service encapsulation and user request formulation so as to protect and reuse service providers' private.The efficiency and precision of service matching were also improved significantly.A new service composition method based on dynamic machining feature concept was proposed,and a comprehensive optimization model based on service quality was established which took time,cost and reliability as objectives.Genetic algorithm was applied for optimized cloud manufacturing service composition.Based on the above methods,a prototype system was developed,and the effectiveness of proposed methods was verified with a real example from aerospace manufacturing industry.

Key words: cloud manufacturing, manufacturing service, complex aircraft structural parts, dynamic machining feature, genetic algorithms