Knowledge-based assembly process design method and system and medium

Abstract

The invention provides a knowledge-based assembly process design method and system and a storage medium. The knowledge-based assembly process design method comprises the following steps: a process knowledge modeling step: constructing an assembly process knowledge model; a process knowledge base building step: building an assembly process knowledge base; a process flow defining step: defining an assembly process flow to obtain an assembly process flow diagram; a process knowledge screening step: screening the assembly process knowledge to obtain an optimal process instance; an assembly processstructuralization step: generating a structuralized assembly process according to the optimal process instance; and a normativity examination step: automatically examining the normativity of the assembly process. Expression, association and storage of a large amount of complex heterogeneous process knowledge are realized, a unified spacecraft assembly process knowledge base is constructed, and knowledge-based rapid process design is supported. Knowledge-based and intelligent assembly process design based on the process flow and knowledge is realized, so that the process design efficiency is greatly improved. The design quality of the process file is effectively ensured.

Description

technical field [0001] The invention relates to the field of complex assembly process design such as spacecraft, in particular to a knowledge-based assembly process design method and system. In particular, it relates to a knowledge-based rapid design method and system for a complex assembly process. Background technique [0002] As the core guidance document for complex assembly production such as spacecraft, the assembly process is scientific, correct and standardized, which has an important impact on quality performance. Complex process design has the characteristics of strong experience and intensive knowledge. With the significant shortening of the complex development cycle and the continuous improvement of the requirements for high precision, high stability, and high reliability, the assembly process has been continuously refined and quantified, and the workload of process design has also increased dramatically. [0003] At present, the complex assembly process design...

AI Technical Summary

Problems solved by technology

[0004] 1. There are still a lot of repetitive input work in the process design process, and the efficiency of process design needs to be improved urgently;

[0005] 2. The preparation level of the existing process content is too much dependent on the personal preparation habits and technical level of the craftsmen of each model, the standardization and consistency of the process content are not high, and the granularity of the process content is different

[0006] According to the literature search of the existing technology, it is found that the current domestic and foreign research on process knowledge expression, management and intellectualization, and intelligent assembly process design system mainly focuses on machining and assembly in large-scale manufacturing industries such as automobiles. The process route is mature and solidified, and the use of historical data and knowledge is relatively simple

However, complex spacecraft and other complexes usually adopt multi-variety, variable batch, and research-and-development production models. The technical route and state of the assembly process are complex and changeable. It is difficult to express process knowledge, knowledge management, mining and push, and quickly generate assembly processes. Mainly, less mature engineering applications

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