3D process design method and platform for typical automotive machined parts based on mbd

Abstract

The invention belongs to the technical field of computer-aided process design, and discloses an MBD-based three-dimensional process design method and platform for typical machined parts of automobiles. The three-dimensional CAD software is used as the carrier, the MBD design model is used as the only data input, and the process MBD model is used as the Data output, the design process includes the establishment of MBD-related standards, the creation of MBD design models, the creation of feature classification and feature library, feature recognition and information extraction, generation of processing elements, processing element clustering generation procedures, process sequencing, manufacturing features Body, process model creation and other steps. The final application example of the present invention is realized in the three-dimensional CAPP system developed by C++ and NXopen language with NX as the carrier. The present invention can quickly generate a process MBD model that integrates process models and manufacturing features, and can realize the visualization of the process design process , improve process design efficiency, and lay the foundation for the integration of CAD / CAPP / CAM.

Description

technical field [0001] The invention belongs to the technical field of computer-aided process design, in particular to an MBD-based three-dimensional process design method and platform for typical machined parts of automobiles. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Model Based Definition (Model Based Definition, MBD) is a digital product definition technology oriented to computer applications. Its core idea is to integrate detailed information such as product dimensions, geometric tolerances, datums, and surface roughness related to 3D solid models. In the 3D solid model, use the integrated 3D solid model to fully express the definition information of the product, and use it as the only basis in the product manufacturing process, completely abandoning the traditional structure design process to express the entity with 2D CAD drawings The way of the model, so that the uniqueness of data in t...

AI Technical Summary

Problems solved by technology

At present, most of the process models are created by means of manual interaction and parametric modeling. The modeling versatility is poor and the generation efficiency is low, which is contrary to the concept of rapid creation of process models.

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