一、前言轴对称锻件,系指轴对称变形的模锻件,其外形特征是旋转体,例如齿轮坯、法兰等。根据作者对我国几个大型汽车厂和拖拉机厂的粗略统计,锤上和热模锻压力机上模锻的轴对称锻件,约占这些工厂所生产模锻件总数的30％。而在一些专业齿轮(箱)厂,则约占90％以上。这说明开发轴对称锻件锻模计算机辅助设计(CAD)的应用系统,具有十分广阔的应用前景。 I. Introduction Axisymmetric forgings, refers to the axisymmetric deformation forgings, the shape features of the rotating body, such as gear billet, flange and so on. According to the author’s rough statistics on several large auto factories and tractor factories in China, the axial symmetrical forging on the hammer and the hot die forging press is about 30% of the total number of die forgings produced in these factories. In some professional gear (box) plant, then account for more than 90%. This shows that the development of axisymmetric forging die CAD (Computer Aided Design) application system, has a very broad application prospects.