Assembly visualization process design method

Abstract

The invention relates to an assembly visualization process design method, and solves problems existing in a traditional computer aided assembly process design technology. On the basis of a MPMS (Manufacture Process Management System), a unique assembly visualization process design system is developed; on the basis of the system, through an open interface, the system is integrated with a CAD (Computer Aided Design) modeling system, an assembly simulation analysis system, a product data management system and a typical knowledge base through a multi-system integration way. The integrated system has the following main functions of planning and designing the assembly process, carrying out weight reduction and storage on a three-dimensional process model, carrying out simulation verification and optimization on an assembly course, integrating a process resource base, a three-dimensional model base and a typical process resource base, and carrying out electronic countersigning and visual holographic releasing. Through assembly visualization process teaching, the design intention of the assembly process can be visually and clearly embodied, so that the assembly efficiency of assembly workers can be improved, phenomena including assembly missing and wrong assembly can be inhibited, and product assembly quality can be greatly improved.

Description

technical field [0001] The invention relates to a visual assembly process design method, which belongs to the field of assembly process design. Background technique [0002] Assembly is the most important key link in the whole life cycle of product manufacturing, which consumes a lot of time and energy, and it is also the last link for the product to obtain overall performance. The development of assembly technology is one of the decisive factors to ensure product quality and improve production efficiency. Although the computer-aided assembly process design technology has been applied at present, the reason for its own positioning is the lack of systematicness, pertinence and integration. As a result, the assembly process design generally adopts a two-dimensional model, and the process design is completely dependent on the unique expression design. The intended two-dimensional diagram is limited by its expressiveness, and a lot of energy of the craftsman is wasted in the mu...

AI Technical Summary

Problems solved by technology

[0003] 1. At home and abroad, there is no system completely designed for assembly visualization process. The current popular 3D CAD mostly starts from the perspective of product design. It lacks necessary data and technical support for how to participate in the production process and guide production. It is impossible to integrate the assembly process, The assembly parts and the manufacturing resources related to the assembly process are closely combined to realize the simulation of the assembly process and the verification of the assembly process, and it is difficult to use existing knowledge and experience

Moreover, the existing digital assembly system focuses on assembly process simulation and assembly feasibility verification, but has little consideration for the expression, generation and on-site teaching of assembly process, and cannot make full use of the process information generated in the digital assembly process to quickly generate guidance Process documentation for assembly production

[0004] 2. Low degree of optimization

Although experienced process designers can design a feasible assembly process specification, it is often not the best. Due to the limitations of personal experience and comprehensiveness and correctness of the problem, it is difficult to obtain the optimal design, which makes the process planning lack of system. sex and science

[0005] 3. Low design efficiency

As assembly process designers need to do a lot of calculations, look-up tables, and document preparation, it will take a lot of time and affect the production cycle of the product

[0006] 4. Poor consistency

During process design, it is necessary to convert the 3D model into a 2D graph, resulting in non-unique data sources, which cannot be associated with the product design model

And when the same product is compiled by different craftsmen, different plans will be obtained, which lacks consistency, and it is difficult to fully and correctly consider the assembly manufacturability in the initial stage of product design, and the feedback and modification of problems in the assembly process are slow and difficult to achieve

[0007] 5. The design is difficult and knowledge is easily lost

Process design is an overall optimization process that coordinates product technical requirements, corporate economic benefits, and social effects. It involves a wide range of areas and handles a large amount of information. Therefore, process technicians with rich assembly experience are required to be competent. The acquisition and accumulation of this assembly experience It is a long-term process. There is no reference and accumulation of knowledge base, which leads to the loss of knowledge with the change of personnel, and lacks the means of accumulation and reuse of knowledge.

[0008] 6. Poor support for product assembly design and process planning

The inspection and evaluation of assembly performance needs to be carried out with the help of physical models of the same size, resulting in long development cycles, high development costs, and high development risks, which do not meet the needs of the rapid response market

[0009] 7. Poor integration

The three links of design process and manufacturing lack effective connectivity, and the assembly process design and assembly simulation are disconnected

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