摘要:
In designing a plurality of parts using a CAD graphics system, appellation attributes are imparted to the constituents of the respective parts such as lines, faces, etc. The position of a weld point is then designated using a pointing device such as a mouse. Subsequently, the lines, faces, etc. constituting a portion of the parts data to be coupled at the weld point are also designated by a mouse or the like. It is possible to read the appellation attributes of the parts to be coupled at the weld point from the appellation attributes imparted to the thus-designated lines, faces, etc. Thereby, the appellation attributes of the parts are imparted to the weld point.