快速成型制造的核心是模型的离散化处理和堆积加工，具体过程包括前处理，即零件三维模型的建立、近似处理、切片处理等，下面山东快速成型厂家就来为您讲解一番。

The core of rapid prototyping manufacturing is the discrete processing and stacking processing of models. The specific process includes pre-processing, that is, the establishment of three-dimensional models of parts, approximate processing, slicing processing, etc. The Shandong rapid prototyping manufacturer will explain it to you.

（1）三维模型建立。

(1) 3D model establishment.

快速成型是快速成型系统的辅助软件中将产品或零件的三维模型进行切片处理，所以三维模型的建立关重要，是快速成型制造的基础。三维模型的建立是将产品的结构数据信息输入到计算机中生成三维模型的过程。

Rapid prototyping is firstly the assistant software of rapid prototyping system to slice the three-dimensional model of products or parts. The establishment of 3D model is the process of inputting the product structure data information into the computer to generate the 3D model.

常用的三维建模方法有以下两种：一是利用利用CAD软件进行建模，设计人员根据产品的设计要求（结构尺寸等）在具体建模软件中设计三维模型；另一种是对具体实物进行数字化处理，通过相关工具或手段将食物信息数据转化为快速成型系统可以识别的数据。

There are two common 3D modeling methods: one is to use CAD software for modeling, and designers design 3D models in specific modeling software according to product design requirements (structural dimensions, etc.); The other is to digitize the specific objects and convert the food information data into the data that can be recognized by the rapid prototyping system through relevant tools or means.

（2）三维模型的近似处理。

(2) Approximate processing of 3D models.

快速成型系统无法直接识别零件的三维模型，在使用快速成型系统加工零件时须将三维模型进行相关的处理。目前常见的三维模型近似处理方法是用一系列的小三角形平面来逼近自由曲面。

The rapid prototyping system cannot directly identify the 3D model of the part, so the 3D model must be processed when the rapid prototyping system is used to process the part. At present, the common 3D model approximation method is to use a series of small triangle planes to approximate the free surface.

在实际处理过程，根据曲面的形状选择合适的三角形的大小，从而保证不同曲面的近似精度。经过近似处理的三维模型文件称为STL格式文件，其中三维模型被划分为一系列相连的空间三角形。典型的CAD软件都有转换和输出STL格式文件的接口，例如在SolidWorks中，可以将三维模型另存为*.stl格式文件。

In the actual processing, the appropriate triangle size is selected according to the shape of the surface to ensure the approximate accuracy of different surfaces. The approximated 3D model file is called STL format file, in which the 3D model is divided into a series of connected spatial triangles. Typical CAD software has the interface to convert and output STL files. For example, in SolidWorks, you can save 3D models as *. stl files.

（3）三维模型的切片处理。

(3) Slicing of 3D models.

快速成型制造是根据零件的截面轮廓进行堆积叠加，在进行快速加工前须从近似处理后的三维模型上沿设定的成型高度方向，每隔一定的间隔高度进行切片处理，提取零件的截面轮廓，这个过程即为切片处理。

Rapid prototyping manufacturing is to stack and stack according to the profile of the part. Before rapid processing, slice from the approximated 3D model along the set molding height direction every certain interval height to extract the profile of the part. This process is called slicing.

间隔高度的大小可以根据被加工零件的精度和生产率的要求选定，间隔愈小，精度愈高，但成型时间也就愈长；间隔的范围一般取在0.05～0.5mm之间，常用为0.1mm左右。切片的间隔高度选定之后，成型时每层的零件轮廓厚度也就被确定，即每层材料厚度等于间隔高度。

The spacing height can be selected according to the requirements of the precision and productivity of the parts to be processed. The smaller the spacing, the higher the precision, but the longer the molding time; The interval is generally 0.05~0.5mm, usually about 0.1mm. After the interval height of slices is selected, the part contour thickness of each layer is determined during molding, that is, the material thickness of each layer is equal to the interval height.

快速成型的使用离不开这三个过程的相关内容就是这样了，您对此有什么理解或者问题或者需求，随时来我们网站http://m.metferro.com进行咨询吧！

The use of rapid prototyping is inseparable from the relevant contents of these three processes. If you have any understanding or questions or needs, please come to our website at any time http://m.metferro.com Consult!