【正文】 作塑料樣件，以便發(fā)現(xiàn)和糾正出現(xiàn)的錯(cuò)誤。 美國(guó)愛(ài)達(dá)荷國(guó)家工程與環(huán)境試驗(yàn)中心采用快速凝固工藝即RSP技術(shù)實(shí)現(xiàn)了注塑模具的快速經(jīng)濟(jì)制造。該方法采用快速原型技術(shù)制作的樣件作為母體樣板，通過(guò)噴涂到母體樣板的金屬或合金熔滴的沉積制造模具。其工藝過(guò)程為：熔融的工具鋼或其它合金被壓入噴嘴，噴向并沉積到母體樣板上，復(fù)制出母樣的表面結(jié)構(gòu)形狀，借助脫模劑使沉積形成的鋼制模具與母樣分離，即可制出所需模具。 母樣使用的材料取決于噴涂其上的合金材料。對(duì)于噴涂工具鋼來(lái)說(shuō)，可選用陶瓷材料，類(lèi)似材料還有鋁氧粉和氧化鋯可供選擇。該方法制作精度高（,制造精度可達(dá)177?！?77。）、時(shí)間短（普通模具一周之內(nèi)即可成型）、造價(jià)低（一般為傳統(tǒng)模具制造費(fèi)用的1/2～1/10）。 　快速鑄造模具 以聚碳酸脂為材料，用SLS快速制出母型，并在母體表面制出陶瓷殼型，焙燒后用鋁或工具鋼在殼內(nèi)進(jìn)行鑄造，即得到模具的型心和型腔。該方法制作周期不超過(guò)4周，制造的模具可生產(chǎn)250000個(gè)塑料制品。 5　結(jié)論 綜上所述，RP是一種正在進(jìn)一步發(fā)展和完善且已獲得了廣泛應(yīng)用的高技術(shù)?？梢灶A(yù)見(jiàn)，隨著CAD的廣泛應(yīng)用、市場(chǎng)競(jìng)爭(zhēng)日趨激烈、快速造型技術(shù)本身和快速模具制造成套技術(shù)的完善，快速成形技術(shù)將發(fā)展為一種能被企業(yè)普遍采用的技術(shù)手段，并將給企業(yè)帶來(lái)巨大的經(jīng)濟(jì)效益，這應(yīng)引起各方面的高度重視。附錄3The Rapid Prototyping Manufacturing and its application in molding manufacturingAbstract: By discussing the rapid prototyping technology the craft principle, characteristic of the processes, formation and the general situation of the develop of fast prototype and its application in molding, point out the technique can form a kind of a process system of extensive application and novel, and its foreground is vast.Key Words: rapid prototyping technology。 molding manufacturing。 development of product Rapid prototyping technology is a new type of multidisciplinary integrated manufacturing technology. After the 1980s, following the application of puteraided design, product shape and design capabilities have greatly improved, however, product design has pleted, production, a system must be designed to convey the concept of samples, rapid feedback to product design, product design and assess the feasibility, and feasibility studies. The increasingly fierce petition in the market today, the time is effective. To enhance the petitiveness of products, from product development to volume production of the whole process are urgently required to reduce costs and increase speed. Rapid prototype technology appearance provides an effective solution to this problem which much attention at home and abroad.1. The basic principle of Rapid Prototyping Technology The RP is the generic name of the principle creation product prototype that uses the longlost layering, its principle is: Produce CAD model224。 Stratified separated 224。according to the plan geometry information which is dispersed to pile up the original material224。 generating entity models. This technology integrates of puter technology, laser processing technology, new material technology, relying on CAD software in the creation of 3D puter models entities, and is divided into a series of plane geometry information to control the scanning laser beam direction and speed, using sinter, pooling or chemical reaction means exhaustive selective processing of raw materials, thus rapid accumulation manufacture products entities models.2. The characteristics of Rapid Prototyping Technology Rapid Prototyping Technology breaks the traditional way to produce spare parts of “roughcast 224。slice to pare to process224。finished”, Needless cutlery created the first production of spare parts, is an unprecedented lamina reducing processing methods. Comparing to tradition, the fast prototype processes the following advantage:(1) Produce the spare parts of the curved face and more plicated appearance quickly, such as shoulder within spare parts and hollow and parts of , consumedly lowered the development cost of the new product and development period.(2) Is a noncontact processing, machine tool cutting processing is necessary cutlery and jig without cutlery wear and cutting force.(3) Without vibration, noise and slice to pare the waste.(4) Can carry out the nighttime over fullautomatic production.(5) Process with high efficiency, produces the article entity model and molding tools quickly.The form follows the parison of the method for the Rapid Prototyping Technology and tradition.Comparison the itemProcessing technologyThe tool machine slices to pare to processRP(Light shape method)processThe method of processDo away with the surplus material processFold the layer processThe object of processSolidLiquid, portrait, powderToolThe tool of slice to pareLight beamMinimum processing unitsDot’s diameter is about 1μmsTriangles of 200μms longProduction of spare partsThe least processes e together the body of the unitThe least processes e together the body of the unitThe RP and traditions slice to pare the method parison sheet3. The develop of RPRapid prototyping technology concept that the concept RP (Rapid Prototyping Technology) could be back to 1979. the profess of Zhong Chuan Weixiong in produce and technique institute of Japanese University of Tokyo invent the method of fold the layer model, the Xiao Yu Xiunan put forward the light shape method again in 1980, after the conceive put forward, it was continued to study in 1984 by Wan Gu Yanger, and carried on to produce manufacture on a trial basis in 1987. 1988, the United States rapidly prototype 3D Systems Corporation was the first to introduce practical deviceslaser threedimensional shapes that SLA (Stereo Lightgraphy Apparatus), and annual sales growth rate 30%~40% increase in the world market. In recent years, with increasing performance scanninga mirror, and the development of materials science and puter technology, rapid prototyping technology matures, and in 1994 to promote universal access to the formal stage. In accordance with the patterns and materials used in the different types of rapid prototyping technology currently has the following four types. Solidification resin materials using laser light shapes law The light shape equipment is excellent with a product of the 3D Systems pany of the United States, and the formation of a monopoly. Figure 1 shows the operating principles. Issued by the laser light, the optical system to pile into a small beam, the beam in the puter controlled, selective scanning resin surface, using an ultraviolet resin Frozen mechanisms, a layer of solidification resin, each layer of solidification, precision workstations in a distance with