A system for assemble and welding three-dimensional process planning

Abstract

The invention discloses an assembly and welding three-dimensional process planning system, which is integrated by a manufacturing process management system, a CAD modeling system, a welding simulationanalysis system, a product data management system and a typical process knowledge base. The invention realizes the rapid and low-cost design of the assembly welding process, and not only shortens thedesign period of assembly welding process, but also improves the quality of assembly welding process. Through the teaching of three-dimensional assembly welding process, the intent of assembly welding process design can be directly and clearly reflected, the assembly welding efficiency of welding workers can be improved, the miswelding can be restrained, the phenomenon of out-of-order assembly welding can occurr, and the assembly welding quality of products can be greatly improved. At the same time, conditions for the accumulation of process knowledge are provided and the competitiveness of enterprises is enhanced.

Description

technical field [0001] The invention belongs to the field of welding process design, and in particular relates to a three-dimensional process design system for assembly and welding. Background technique [0002] Under the current manual-semi-mechanized manufacturing conditions, the traditional assembly and welding methods can no longer adapt to the rapid development and production of key complex components. The visualization effect of the welding process is poor, the cycle is long, the efficiency is low, and quality problems are prone to occur. There are large deformations and multiple reworks, which seriously affect the progress of product development. The traditional two-dimensional process has poor guidance, which leads to strong randomness, large errors, and lack of consistency in the actual operation of the on-site workers. The formed process lacks verification, and the problems that cannot be exposed in the process design process are moved to the actual assembly and we...

AI Technical Summary

Problems solved by technology

[0003] 1. There is no system at home and abroad that is completely designed for the three-dimensional process of assembly and welding. The current popular three-dimensional CAD starts from the design point of view of the product, and lacks necessary data and technical support for how to participate in the production process and guide production. The process, welding parts and manufacturing resources related to the assembly and welding process are closely combined to realize the simulation of the assembly and welding process and the verification of the process, and it is difficult to use existing knowledge and experience

[0004] 2. Low degree of optimization

Although experienced process designers can design a feasible assembly and welding process specification, it is often not the best. Due to the limitations of personal experience and consideration of the comprehensiveness and correctness of the problem, it is difficult to obtain the optimal design, which makes the process planning insufficient. systematic and scientific

[0005] 3. Poor consistency

Due to the different understanding of two-dimensional drawings, when the same product is compiled by different technicians, different plans will be obtained, which lacks consistency, and it is difficult to fully and correctly consider the process of assembly and welding in the initial stage of product design. , the feedback and modification of problems in the assembly and welding process are slow and difficult to achieve

[0006] 4. The design is difficult and knowledge is easily lost

Process design is an overall optimization process that coordinates product technical requirements, enterprise 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. 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.

[0007] 5. Poor support for product assembly and welding process planning and design

The performance inspection and evaluation of the product after assembly and welding needs to be carried out with the help of a physical model of the same size, resulting in long development cycle, high development cost, and high development risk, which does not meet the needs of the rapid response market

[0008] 6. Poor integration

The three links of design, process and manufacturing lack effective communication, and the process design and welding simulation are out of touch

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