Rapid prototyping (RP) is an advanced manufacturing technology developed in the 1990s, which plays a positive role in promoting product innovation, shortening the development cycle of new products and improving product competitiveness. Since the technology came out, it has been widely used in the manufacturing industry of developed countries, and a new technology field has emerged.

外觀設(shè)計(jì)很多產(chǎn)品特別是家電產(chǎn)品和汽車等對(duì)外形的美觀和新穎性要求極高。傳統(tǒng)檢驗(yàn)外形的方法是將產(chǎn)品圖形顯示于計(jì)算機(jī)終端，但經(jīng)常發(fā)生“畫出來好看而做出來不好看”的現(xiàn)象。采用RP技術(shù)可以很快做出原型，供設(shè)計(jì)人員和用戶審查，使得外形設(shè)計(jì)及檢驗(yàn)更直觀有效快捷。

The appearance design of many products, especially household appliances and automobiles, has high requirements for the appearance of beauty and novelty. The traditional method of shape inspection is to display the product graphics on the computer terminal, but the phenomenon of "drawing looks good but making looks bad" often occurs. Using RP technology can quickly make the prototype for designers and users to review, making the shape design and inspection more intuitive, effective and fast.

設(shè)計(jì)檢查以模具制造為例，傳統(tǒng)的方法是根據(jù)幾何造型在數(shù)控機(jī)床上加工，這對(duì)于一個(gè)價(jià)值數(shù)十萬乃數(shù)百萬元的復(fù)雜模具來說風(fēng)險(xiǎn)太大，設(shè)計(jì)上任何不慎反映到模具上就是不可挽回的損失。RP方法可在開模前真實(shí)而準(zhǔn)確地制造出零件原型，設(shè)計(jì)上的各種細(xì)微特征和錯(cuò)誤就能在模型上一目了然地顯示出來，這就大大減少了修模和開模風(fēng)險(xiǎn)。

Design inspection takes mold manufacturing as an example. The traditional method is to process on the numerical control machine according to the geometric modeling, which is too risky for a complex mold worth hundreds of thousands or even hundreds of thousands of yuan. Any careless reflection on the design to the mold is an irreparable loss. RP method can truly and accurately produce prototype parts before mold opening, and all kinds of subtle features and errors in design can be clearly displayed on the model, which greatly reduces the risk of mold repair and mold opening.
              

功能測試設(shè)計(jì)者可以利用原型快速進(jìn)行功能測試以判明是否滿足設(shè)計(jì)要求，從而優(yōu)化產(chǎn)品設(shè)計(jì)。如風(fēng)扇、風(fēng)鼓等的設(shè)計(jì)，可獲得非常好的扇葉曲面、低噪音的結(jié)構(gòu)等。

Functional test designers can use the prototype to quickly perform functional test to determine whether it meets the design requirements, so as to optimize the product design. For example, the design of fan and air drum can obtain very good blade surface and low noise structure.

可觸摸性通過原型，人們能觸摸和感受實(shí)體，這對(duì)照相機(jī)、手握電動(dòng)工具的外形設(shè)計(jì)極為重要，這一點(diǎn)在人機(jī)工程應(yīng)用方面 具有廣泛的意義。

Touchability through the prototype, people can touch and feel the entity, which is very important for the shape design of cameras and hand-held electric tools, which has a wide range of significance in the application of ergonomics.

裝配干涉檢驗(yàn)在有限空間內(nèi)的復(fù)雜系統(tǒng)，對(duì)其進(jìn)行裝配干涉檢驗(yàn)是極為重要的。原型可以用來做裝配模擬，觀察工件之間如何配合、如何相互影響。如汽車發(fā)動(dòng)機(jī)上的排氣管，由于安裝關(guān)系極其復(fù)雜，通過原型裝配模擬可以一次成功地完成設(shè)計(jì)。

Assembly interference inspection is a complex system in limited space, so it is very important to carry out assembly interference inspection. Prototype can be used for assembly simulation to observe how the workpieces cooperate and interact with each other. For example, the exhaust pipe of automobile engine, because of its complicated installation relationship, can be successfully designed at one time through prototype assembly simulation.

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