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STEP neutral file analysis instantiation method and system based on parallel processing data structure

A neutral file and data structure technology, applied in file system, file system type, digital data processing, etc., can solve the problems of slow parsing speed of STEP application protocol and poor data compatibility, and improve data compatibility and accuracy. The effect of high and accelerated reading speed

Pending Publication Date: 2022-05-10
XI AN JIAOTONG UNIV +1
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Problems solved by technology

Now almost every major CAD / CAM system includes a module for reading and writing data defined by a STEP application protocol (application proto-cols, AP's). poor data compatibility

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  • STEP neutral file analysis instantiation method and system based on parallel processing data structure

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Embodiment Construction

[0034] In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate ...

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Abstract

The invention discloses an STEP neutral file analysis instantiation method and system based on a parallel processing data structure, and the method comprises the steps: employing the parallel processing data structure to analyze an STEP neutral file based on an STEP standard, obtaining the data information needed in an instantiation process, carrying out the instantiation of the obtained data information, obtaining geometric and topological objects in a CAD geometric engine bottom layer structure, and carrying out the instantiation of the geometric and topological objects in the CAD geometric engine bottom layer structure. According to the method, the parallel instantiation is supported and the instantiation speed is improved by standardizing geometric and topological information in the STEP neutral file and finally creating an auxiliary data structure, the parallel instantiation is realized by using a two-dimensional array, and the geometric information and the topological information in the STEP neutral file are stored in the two-dimensional array; nine data exchange functions of points, straight lines, circles, ellipses, planes, cylindrical surfaces, conical surfaces, spherical surfaces and toroidal surfaces are realized. And the STEP file of the basic model and the STEP file of some relatively complex models can be read correctly and accurately.

Description

technical field [0001] The method belongs to the reading and instantiation of STEP neutral files, involves the design, mapping and parallel instantiation of entity classes, and specifically relates to a method and system for parsing and instantiating STEP neutral files based on parallel processing data structures. Background technique [0002] The geometry engine is the core part of 3D CAD software, and it is also the basic component of industrial software such as Computer Aided Engineering (CAE) and Computer Aided Manufacturing (CAM). [0003] In design and manufacturing, many systems used to process technical product data. Each system has its own data format, so the same information must be stored multiple times in multiple systems, which leads to information redundancy and errors. This problem is not unique to the manufacturing industry, but it is more prominent in the manufacturing industry, because the complex data and three-dimensional data cause misunderstandings by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F40/151G06F40/205G06F30/10G06F16/18
CPCG06F40/205G06F40/151G06F30/10G06F16/1858
Inventor 杨义军曾薇毕玉莉胡文辉张兴军冯圆媛沈梦莹李伯宇
Owner XI AN JIAOTONG UNIV
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