Method for making feature modeling system on the basis of extensive markup language (XML) in unigraphics (UG) environment

Abstract

The invention discloses a method for making a feature modeling system on the basis of extensive markup language (XML) in a unigraphics (UG) environment. The method includes following steps that features of a part are classified according to processing and manufacturing angles of the part; relations and connecting and locating relations among different features are summarized according to whether corresponding relations among all features exist or not so that expression of a feature information model is simplified; detailed feature information is described according to feature classifications and feature relations of the part, and a unique feature information model is established; the feature information model is described in an XML format, and a document type definition (DTD) of an XML document is established for cooperating a subsequent computer-aided process planning (CAPP) system to read XML document data; as for the feature modeling system on the basis of UG, a geometric model of the part is converted to an information model in VisualC++6.0 environment by a secondary development tool of a UG system, and a *.txt format document corresponding to the part is finally output. By means of the method, manufacturing information is clearly expressed by hierarchical description, and a developer is allowed to define own elements as required to describe the feature information model.

Description

technical field [0001] The invention belongs to the technical field of UG modeling, in particular to a method for an XML-based manufacturing feature modeling system in a UG environment. Background technique [0002] Unigraphics (UG for short) is a set of excellent high-end CAD / CAM / CAE integrated high-end software developed by EDS Company of the United States with the main object of mechanical product design. Its functions include conceptual design, engineering design, performance analysis and manufacturing. Unigraphics has powerful functions to simplify the design of complex products, bring products to market faster, reduce product costs and increase the competitiveness of enterprises. It has become the software of choice for many large companies in the world such as General Motors, Boeing Aircraft, Panasonic, etc. Since Unigraphics entered the Chinese market in 1990, it has developed rapidly and has become one of the mainstream design software in China's aerospace, automob...

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Problems solved by technology

[0006] The purpose of the embodiment of the present invention is to provide a method of manufacturing feature modeling system based on XML under the UG environment, aiming to solve the problem that the CAD software used in the design of the mechanical industry in the existing technology only needs to carry out the geometry of the parts. Modeling, but there is no description of the necessary features, manufacturing information and part information in the manufacturing process. The incompleteness of information limits the direct application of design information to manufacturing problems

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