According to the shape of the parts, the rapid prototyping system can make a section with a certain thickness and a specific shape at a time, and then bond them layer by layer to get the three-dimensional parts that need to be manufactured. Of course, the whole process is controlled by computer and completed automatically by rapid prototyping system.

　　快速成型可以在无需准备任何模具、刀具和工装卡具的情况下，直接接受产品设计（CAD）数据，快速制造出新产品的样件、模具或模型。因此，RP技术的推广应用可以大大缩短新产品开发周期、降低开发成本、提高开发质量。由传统的"去除法"到今天的"增长法"，由有模制造到无模制造，这就是RP技术对制造业产生的革命性意义。

　　Rapid prototyping can directly accept product design (CAD) data without preparing any mold, tool and fixture, and quickly manufacture new product samples, molds or models. Therefore, the popularization and application of RP technology can greatly shorten the new product development cycle, reduce the development cost and improve the development quality. From the traditional "removal method" to today's "growth method", and from mold manufacturing to mold free manufacturing, this is the revolutionary significance of RP technology to manufacturing industry.
           

　　快速成型技术的基本原理是：

　　The basic principle of rapid prototyping technology is as follows:

　　将计算机内的三维数据模型进行分层切片得到各层截面的轮廓数据，计算机据此信息控制激光器（或喷嘴）有选择性地烧结一层接一层的粉末材料（或固化一层又一层的液态光敏树脂，或切割一层又一层的片状材料，或喷射一层又一层的热熔材料或粘合剂）形成一系列具有一个微小厚度的的片状实体，再采用熔结、聚合、粘结等手段使其逐层堆积成一体，便可以制造出所设计的新产品样件、模型或模具。

　　The three-dimensional data model in the computer is sliced by layers to obtain the profile data of each layer cross-section. According to the information, the computer controls the laser (or nozzle) to selectively sinter layer by layer powder material (or solidify layer after layer of liquid photosensitive resin, or cut layer by layer of sheet material, or spray layer by layer of hot-melt material or adhesive) to form a layer by layer A series of sheet-like bodies with a small thickness can be made into one layer by layer by means of fusion, polymerization, bonding, etc., so as to produce the designed new product sample, model or mold.