制造风扇叶片冲模,如果没有图纸资料而对叶片进行测绘是不可能准确地将其形状与尺寸绘出,即使有了资料,用常规方法机加工也是十分困难的。我们通过试验摸索出一套用陶瓷型精铸法制造冲模,效果很好,现介绍如下:一、母模的制备;1．将选定的叶片(实物)作为粗模,用有色金属型砂一次造出上下型,分型面沿叶片形状光滑过渡。 It is impossible to accurately plot the shape and size of a blade without a sheet of drawing material, making it difficult to machine with conventional methods, even with information. We worked out a set of experiments using ceramic casting method to create the die, the effect is very good, are as follows: First, the master mold preparation; The selected blade (in-kind) as a rough model, with a non-ferrous metal sand made up and down type, smooth surface transition along the shape of the blade.