A digital manufacturing method of complex surface based on knowledge representation model

Abstract

The invention discloses a complex curved surface digital manufacturing method based on a knowledge expression model, comprising the following steps: S1, constructing a knowledge integration module, a simulation module and an in-situ measurement-compensation module; S2, adopting semantic understanding based on W-ND-IC The reasoning strategy formulates the similarity threshold α; S3. When α≥0.95, the knowledge integration module directly connects and controls the in-situ measurement-compensation module; S4. When 0.95>α≥0.80, the knowledge integration module connects and controls the simulation module to The defects existing in the model are modified, and after the defect modification is completed, the simulation module transfers the model data to the in-situ measurement-compensation module for numerical control processing after data conversion; S5. When α<0.8, manual experts are required to cooperate to complete; the invention establishes An integrated knowledge expression model that runs through the three fields of design, processing, simulation optimization, and measurement, and builds a knowledge base and reasoning mechanism based on this to provide theoretical and technical support for the intelligent closed-loop manufacturing of complex curved surface parts.

Description

technical field [0001] The invention specifically relates to a complex curved surface digital manufacturing method based on a knowledge expression model. Background technique [0002] With the development of industry and the advancement of science and technology, the processing and production of high-end, sophisticated and complex products in the fields of aviation, aerospace, energy, and microelectronics continue to pose new challenges to the ultimate performance of modern manufacturing processes, equipment, and systems, and urgently require quantitative understanding and Grasp the essential laws of manufacturing activities, so that digital technology and advanced manufacturing technology can be organically combined, and advanced manufacturing technology can enter the digital age. Complex surface parts such as aero-engine impellers, large key aerospace structural parts, large ship propellers, and precision mold surface parts are core components that constitute the country's...

AI Technical Summary

Problems solved by technology

[0014] (2) From the perspective of system theory, although some achievements have been made in a single field, it is difficult to take advantage of integration. The fundamental reason is that there is no systematic knowledge system that can integrate these technologies

[0015] (3) A major obstacle affecting the improvement of the design-processing-measurement integration level is that decision-making control and data processing rely too much on the participation of experts, which seriously hinders the improvement of the system's digitalization and intelligence levels, thereby hindering efficiency and accuracy

Images