【摘要】 在ＣＡＤ应用工程中，二维工程图和三维几何模型在产品的整个生命周期中都有着不可替代的作用。本文以焊枪壳体为例，利用 ＡｕｔｏＣＡＤ　Ｒ１２的工程图，从中复制特征轮廓线，经坐标变换后放到 ＭＤＴ Ｒ１．１三维模型的工作平面上，利用ＡＭＰＲＯＦＩＬＥ命令处理后，加入定位尺寸，形成壳体铸模的特征模型。同时利用参数文件命令ＡＭＰＡＲＡＭ使零件与模具的对应尺寸相关联。这样既加快了铸模设计的工作进度，又保证了模具与零件协调，可及早在模具设计阶段杜绝差错。更多还原

【Abstract】 In application engineering of CAD, both two-dimension drawings and three-dimension model are very important in the life cycle of product. This paper takes the welding torch as an example. The feature profile is copied from the drawing, and is transformed to work plane of three-dimension model in MDT R1.1. Then the profile is treated by the command "AMPROFILE", and the location dimension is added. At last the feature model of the shell’s casting mold is geneated. At the same time, the dimension of part and molds are interrelated using the command "AMPARAM". Thus the design pace of welding torch is quickened.更多还原