ABSTRACT
This study aims to build an environment which supports model conversion between data of CAD drawings and data of object-oriented CAD tools. Object-oriented CAD tools generally use object models as their internal models, but semantic and structural differences exist among them because each tool has its own purpose. In order to achieve model conversion among these kinds of data, we should construct a general purpose product model in which each part such as a column has its own attributes and the connections among the parts are described, and convert our model to that of a target CAD tool.
