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Data communication method of parameter characteristic model between isomerization CAD systems based on course recovery

A feature model and data exchange technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems that semantic consistency cannot be guaranteed, reduce data exchange efficiency, etc., achieve a wide range of applications, and improve network transmission Efficiency and easy operation

Inactive Publication Date: 2009-03-04
WUHAN UNIV
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  • Abstract
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Problems solved by technology

However, there are some problems in the UPR method. For example, the UPR method only extracts first-order feature information. Due to the lack of extracted information, two types of features need to be replaced geometrically: singular features and features with insufficient information.
In addition, the semantic consistency of feature exchange in UPR cannot be guaranteed, and in UPR, when data is exchanged, data will repeatedly flow in the source system, UPR, and target system, reducing the efficiency of data exchange

Method used

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  • Data communication method of parameter characteristic model between isomerization CAD systems based on course recovery

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with embodiment, but does not limit the present invention.

[0043] This embodiment adopts Solidworks, Pro / E, CATIA and UG these four current popular heterogeneous CAD systems as the basic system of data exchange, uses Winsocket2.0 as the communication tool, implements with VC6.0 as the development platform, as follows Concrete steps of the embodiment of the present invention:

[0044](1) Install the respective DLL plug-ins in Solidworks, Pro / E, CATIA and UG systems. These plug-ins include first-order feature information extraction components, second-order feature information extraction components, feature model reconstruction components, and Socket communication components. The Socket communication components are Generic existing parts.

[0045] (2) Read an example in the Solidworks system such as figure 1 The L part shown consists of an extrude feature, a cut hole feature, and a simple fillet featu...

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Abstract

The invention discloses a data exchange method of inter-heterogeneous CAD system parametric feature models based on process recovery. In the method, the exchange of inter-heterogeneous CAD system parametric feature models is achieved through the recovery of the establishment process of parametric feature models, information extraction, exchange and re-establishment, thus ensuring the parametric edition of the exchanged models. In addition, the information of the establishment process of the models is transmitted instead of the geometric data of the models, the data quantity to be transmitted through networks is significantly reduced, and the network transmission efficiency is improved.

Description

technical field [0001] The invention relates to the field of CAD, in particular to a method for data exchange of parameterized feature models between heterogeneous CAD systems based on process recovery. Background technique [0002] The exchange of industrial product data can be carried out at the geometric or feature level. Geometry-based data exchange is an early method aimed at exchanging geometric data of products between heterogeneous CAD systems. The first standard for geometry-based data exchange—IGES was released in 1980, and then a large number of standards appeared one after another, such as: STEP, STL, SXF, etc. Although the geometry-based data exchange method has been widely used, there are many defects in this method. For example, the method based on the STEP standard can support the data exchange of the entire life cycle of the product, but it cannot exchange parameter information, and cannot support the exchange of constraints and the exchange of model creat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 何发智蔡贤涛
Owner WUHAN UNIV
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