Three-dimensional assembly process generation method and system for aerospace product

Abstract

The invention provides a three-dimensional assembly process generation method and system for an aerospace product. The system comprises a three-dimensional manufacturing resource library building module, a three-dimensional assembly process design module, a three-dimensional assembly process simulation module and a three-dimensional assembly process release module, the three-dimensional manufacturing resource library building module is used for building a three-dimensional manufacturing resource library containing product, fixture, tool and auxiliary material information, the three-dimensional assembly process design module is used for decomposing process tasks and planning a process according to the built three-dimensional manufacturing resource library to form a process structure tree, the three-dimensional assembly process simulation module is used for building a virtual assembly environment and simulating and analyzing the assembly process according to a three-dimensional model, the assembly process and the process structure tree to form a three-dimensional assembly animation meeting actual assembly requirements, and the three-dimensional assembly process release module is used for integrating process design information and simulation information, forming a three-dimensional assembly process file and releasing the three-dimensional assembly process file to an assembly site. Accurate and visual three-dimensional visual means are provided for aerospace product assembly, so that the problem of information gaps among three-dimensional product design, three-dimensional process design and three-dimensional assembly site implementation in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of aerospace, in particular to the technical field of assembly control of aerospace products, specifically a method and system for generating a three-dimensional assembly process for aerospace products. Background technique [0002] At present, in the process of designing and manufacturing aerospace products, it is common for the design process to be in different places. Designers mainly use 3D models, drawings and design documents to transmit design information. Among them, the drawings and design documents are used as standard data for craftsmen, and the 3D model is only used as a reference for craft design. Drawings include information such as product component composition, installation dimensions, and benchmarks; design documents include information such as installation methods for some components, installation precautions, notices, and change orders. Both drawings and design documents transmit design i...

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Problems solved by technology

[0003] 1. Craftsmen cannot make full use of the received design data. The 3D model is only used as a reference for process design and is not directly used for process design, resulting in an information gap between the process and design. The preparation of the process mainly relies on the experience of the craftsmen, resulting in Manufacturing overdependence on the experience of craftsmen

[0004] 2. The two-dimensional process specification uses paper to describe the process content. The process documents lack intuition and poor readability. The on-site assembly personnel need to digest and absorb the process documents with the help of a large number of drawings and experience. The understanding of the process documents is largely Therefore, there is an information gap between the process design and the site, which causes the work site to rely too much on the experience and skills of the workers, and the process documents are poorly instructive for new employees

[0005] 3. The means of verification of process documents are backward

The feasibility and rationality of the assembly process can only be verified by means of physical trial assembly. Technicians cannot find specific problems such as tooling tool interference, operating space, and accessibility before assembly. Various problems that require coordination often occur, resulting in assembly Problems such as low efficiency, unstable quality, long assembly cycle, and high assembly cost

[0006] 4. During the manufacturing process of aerospace products, a series of changes often occur due to reasons such as design and process. Changes are managed in the form of notices and change orders, which require re-drawing and printing, which consumes a lot of labor and paper

In addition, the assembly environment of aerospace products has a large number of paper drawings and process documents, which are prone to damage and loss, which is not conducive to the paperless construction of the workshop

[0007] 5. The management process of two-dimensional process documents is complicated. Every time you borrow it, you need to go to the archives office for filing and borrowing, and return the documents according to the specified time and process. The management process has a lot of time and manpower waste, which reduces the management efficiency of process documents

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