Three-dimensional process planning method and platform for typical automobile machined parts based on MBD

Abstract

The invention belongs to the technical field of computer-aided process planning, the invention discloses a three-dimensional process planning method and a platform for typical automobile machined parts based on MBD, based on 3D CAD software, with the MBD design model as the sole data input, the process MBD model is used as the data output, and the design process includes the establishment of MBD related standards, the creation of MBD design model, feature classification and feature database, feature recognition and information extraction, the generation of machining elements, the generation ofmachining elements clustering process, process sequencing, manufacturing features, the creation of process model and so on. The final application example of the present invention is in the case whereNX is used as a carrier, C + + and NXopen language, the invention can quickly generate a process MBD model which integrates a process model and a manufacturing feature body, can realize the visualization of the process design flow, improve the process design efficiency, and lays a foundation for the integration of CAD / CAPP / CAM. The invention can be used in the three-dimensional CAPP system developed by C + + and NXopen language.

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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