Radar key part process design method based on PMI information

Abstract

The invention provides a radar key part process design method based on PMI information. The method comprises: extracting text annotation information, dimensional tolerance information and geometric feature information associated with the dimensional tolerance information in a radar key part MBD model; carrying out similarity calculation on the geometrical characteristic information and the geometrical characteristic information of the typical object, determining the category of the radar key part, and obtaining a process route of the corresponding category; comparing the text annotation information with a typical process template library to obtain a process template corresponding to the text annotation information; sorting the process route and the process template to generate an optimal process route; and inputting the dimensional tolerance information into the optimal technological process, and completing technological design. According to the method, the process route is obtained byevaluating the feature similarity of the target part and the typical part, the process content is inferred according to the PMI information, meanwhile, the geometric tolerance information is directlycalled, the error rate of information input is reduced, and the process design efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of process design, in particular to a process design method for key radar components based on PMI information. Background technique [0002] PMI (Product Manufacturing Information) is the manufacturing information marked on the 3D model, which expresses all the manufacturing information such as dimensions, tolerances, and technical requirements originally reflected on the 2D drawings on the 3D model. PMI information includes product manufacturing information such as basic dimensions and tolerances, shape and position tolerances, surface roughness, benchmarks, design and production technical requirements. [0003] Most of the key components of phased array radar are complex deep-cavity thin-walled parts, which are important parts that affect microwave performance. The parts require high precision and complex processing procedures. Usually, the product designer completes the 3D model of the product and marks ...

AI Technical Summary

Problems solved by technology

In the traditional process design process, process designers generally need to understand and digest manufacturing information such as dimensions, tolerance requirements, and technical requirements in the model. The cycle is long, and the quality of process preparation depends on the personal technical level and experience of the craftsman. During the process of process preparation, the planning of the process route is not uniform. The size and tolerance information entered manually is easy to miss and make mistakes, and it cannot be effectively standardized, resulting in the loss of process knowledge. The reuse rate is low, the level of intelligence in process design is low, and it is impossible to carry out refined management and optimization, and cannot meet the requirements of rapid and efficient development of key radar components

[0004] At present, the production of radar complex structural parts is a typical small batch and multi-variety product. In the existing process preparation process, different structural parts are assigned to different craftsmen, resulting in different structural parts with the same or similar process routes. , so that the standardized process route cannot be passed on, and the existing resources cannot be shared in time

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