关键词: 叶片修复, 加工曲面, 实作模型, 公差约束, 镜像模型, 航空发动机, 曲面重构

Abstract: Cost could be reduced with blade repairing.Laser cladding is used to add material on to-be-repaired blade.Defect or deformation maybe occurs on the used blade.To provide enough allowance for laser cladding and to find a machining surface covered by fused surface for milling,an adaptive repairing surface reconstruction method driven by images model was proposed,which took the design surface as the theory model and the practical measured value as the implementation model.The form tolerance and deformation of blade were introduced into machining surface optimization model to establish the objective surface optimization model for ensuring tolerance requirements.The effectiveness and necessity of proposed optimization model was proved by an application.

Key words: blade repairing, machining surface, practical model, tolerance constraint, image model, aero-engine, surface reconstruction