| 摘要 |
<p>It is possible to match a parts model with a 2-dimensional drawing. A parts model has shape changing elements whose shapes are changed before and after assembling and other common elements. 3-dimensional shape data on the shapes of the shape changing elements before assembling and their shapes after assembling and the shapes of the common elements are stored as 3-dimensional shape data on the parts model in a database (12). A calculation unit (14) sets a restriction condition to become a single part between the shapes of the shape changing elements before assembling and the shapes of the common elements for the 3-dimensional shape data stored in the data base (12) and sets a restriction condition to become a single part between the shapes of the shape changing elements after the assembling and the shapes of the common elements, so that 3-dimensional shape data is spread into the 2-dimensional drawing according to the restriction condition and displayed on the screen of the display unit (16).</p> |
