Abstract
Abstract Freeform surfaces are used more and more widely in products of aerospace, automotive and watercraft due to excellent aerodynamic and hydrodynamic performance. Could manufacturing provides a promising solution to satisfy the increasing demands in high quality freeform surface machining capability but significantly increase the shop-floor uncertainties, which necessitates adaptive planning and execution of machining services. To address this issue, this paper first introduces the concept of surface dynamic machining feature (SDMF) which considers feature dynamics across different machining steps and uncertain machining resources. Then a machining service modeling method for feature-based freeform surface machining is put forward by combing SDMF with function blocks (FB). Based on the event-driven mechanism of SDMF-FB, the adaptive response of the machining service to machining resource changes could be started from feature model adjusting for a real optimal machining result. At last, a surface part from the real industry is selected as the case to show the advantages of the proposed method.
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