A 3D assembly process design system and operation method based on cyber-physical fusion

Abstract

The invention discloses a three-dimensional assembly process design system and operation method based on cyber-physical fusion. The system combines the actual assembly environment with the virtual assembly system through cyber-physical fusion technology, and obtains key parts / components / The measured data of the components is transmitted to the virtual information layer through the communication layer, and used as the digital twin model data of the virtual and real mapping of the product, which is used in the 3D process planning and design of the virtual assembly, and the assembly accuracy prediction and simulation are given through the virtual assembly simulation. Online correction instructions, process optimization and feedback control of on-site assembly activities, so as to meet product assembly design requirements by continuously dynamically updating the digital twin model, and finally use 3D process demonstration to guide operators to complete product assembly tasks; this invention can reduce assembly activities The time for pilot installation and repair can not only ensure the efficiency of on-site product assembly, but also improve the accuracy and precision of product assembly.

Description

technical field [0001] The invention relates to the technical field of digitization and informationization of product assembly technology, in particular to a three-dimensional assembly process design method based on cyber-physical fusion. Background technique [0002] On-site assembly of products is one of the necessary links in the whole life cycle of product development, and its assembly quality largely determines the final quality of product development, especially for large and complex products (such as spacecraft, aircraft, ships, Weapons, construction machinery equipment, etc.), the quality of on-site assembly of its products will directly restrict the overall performance of the product. According to incomplete statistics, the man-hours required for product on-site assembly account for 30%-50% of the total man-hours for product production and development, and more than 40% of production costs are used for product assembly. The work efficiency and quality of assembly ha...

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Problems solved by technology

Although the above research has carried out a lot of research and exploratory applications on 3D assembly process design technology, but because it only pays attention to the product assembly process design method and ignores the field application of product assembly process, only the process documents of 3D assembly process design Or the simulation animation is distributed to the on-site operators. The workers can only passively browse the assembly process documents or simulation video animations. They can neither participate in detailed operations such as adjusting the model angle, setting model display attributes, etc., nor can the actual assembly tasks appear on the product site. Provide timely feedback and process online optimization and adjustment in case of abnormal situation

Therefore, under the existing working mode, there will still be a phenomenon that a qualified product can be assembled after multiple trials, repairs, adjustments, even disassembly, and rework during the on-site assembly process of the product, especially when there are many types of parts and components. It is more obvious in the assembly process of large and complex products with high precision requirements and cumbersome assembly coordination process, which eventually leads to the shortcomings of low intelligence and poor consistency in product assembly process design and on-site assembly application, which seriously hinders the improvement of 3D assembly process design level. Improve and promote the application of related systems in the field

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