(This article analyzes the commonly used methods of 3D mechanical design software for data exchange at that time, and then based on the characteristics of 3D mechanical design software, uses the solid model based on B-Rep (Boundary Marking Method) to build the basic data structure, and realizes the A new file format converter for data exchange of 3D mechanical design software reduces the number of file format converters from n(n-1) to n+1.)
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