| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the arrangement change of an independent model by releasing a restricting condition between parts at need even in the case of a geometrically restricting type three-dimensional CAD. SOLUTION: Concerning a geometrically restricting type computer aided automatic designing system generating a three-dimensional model with the support of a computer to automatically generate linked information such as an application drawing and an inverted model corresponding to the three-dimensional model and generates linked information by automatically changing with the change of the three-dimensional model, at the time of assembling a new second part B to an old first part A constituting the three-dimensional model, a pseudo model the geometric condition of which is independent is prepared corresponding to the assembling surfaces A1 to A3 of the second part A to assemble to the second part B to change an assembling condition in the state of releasing geometric restriction between the pseudo model 60 and the second model B. A first table 38 sets an assembling condition between the first part A and the second part B by geometric restriction. A second table 40 sets the assembling condition between the pseudo model 60 and the second part B released from geometric restriction. |
