1、浇铸金属模型方法

1. Method of casting metal model

在制造形状复杂和不规则曲面的上海金属模型时,假如数量较多,并且要求可以精确互换的话,都可以采用石膏模型的方法来制造。用石膏模型做上海金属模型与用木料作模型不一样,它只能用“复杂模型”来制造,即将石膏浆灌注在一个实体模型上,得出一个与 实践模型彻底符合的不和的模具,然后再在石膏模型中浇铸上海金属模型。下面举一个作犁铧铁模的比如来说明制造石膏模的工程程序。

If there are a large number of Shanghai metal models with complex shape and irregular surface, and it is required that they can be interchanged accurately, they can be made by gypsum model. Making Shanghai metal model with gypsum model is different from making model with wood. It can only be made with "complex model", that is, pouring gypsum slurry into a solid model to get a mold completely consistent with the practical model, and then casting Shanghai metal model in gypsum model. The following is an example of making iron molds for plowshares to illustrate the engineering procedures for making plaster molds.

2、机加工金属模型

2. Machining metal model

依据机械模型的外观制造出三维数据模型，依据结构设计零部件，进行机器三维雕琢，这种方法适用于数量少，要求精度的机械模型，由于这种制造方法比较昂贵，一般不采用这种方法。

According to the appearance of the mechanical model to create a three-dimensional data model, according to the structure of the design parts, three-dimensional carving machine, this method is suitable for a small number of mechanical models, requiring accuracy, because this method is more expensive, generally do not use this method.

3、模具加工法

3. Mold processing method

依据机械模型的结构，设计制造出上海金属模型的模具，用压铸机压铸出上海金属模型，这种制造方法适用于批量制造，批量制造成本低，速度快等优点

According to the structure of the mechanical model, the mold of Shanghai metal model is designed and manufactured, and the Shanghai metal model is made by die casting machine. This manufacturing method is suitable for batch manufacturing, which has the advantages of low cost and high speed