The production process of agricultural machinery is special. Most of the parts have complex shapes, such as farming machinery, land preparation machinery and harvesting machinery. In addition, there are many complex curved surfaces, such as plow body curved surface, rotary blade of rotary cultivator, impeller of water pump and feeding screw, etc. Moreover, according to different production conditions, its shape needs to be adjusted accordingly.

因此，利用傳統(tǒng)的機械加工方法研制這種農(nóng)業(yè)機械零件，不僅研制開發(fā)時間長，加工工藝復雜，而且很難達到理想的效果。運用的激光快速成型集成技術，不僅大大縮短新產(chǎn)品的開發(fā)周期，降低開發(fā)成本，而且制造質量也優(yōu)于傳統(tǒng)制造方法。

Therefore, using the traditional machining method to develop the agricultural machinery parts, not only the development time is long, the processing technology is complex, but also it is difficult to achieve the desired results. Using advanced laser rapid prototyping integration technology, not only greatly shorten the development cycle of new products, reduce development costs, but also the manufacturing quality is better than the traditional manufacturing methods.

激光選區(qū)燒結是快速成型制造中的重要工藝方法之一。該技術采用逐層材料添加的原理，對三維實體模型進行切片分區(qū)處理，生成激光燒結的掃描路徑.

Selective laser sintering is one of the important processes in rapid prototyping. Based on the principle of layer by layer material addition, the 3D solid model is sliced and divided into sections to generate the scanning path of laser sintering

然后，通過x-Y激光掃捕儀使激光束沿掃描路徑掃描，逐層燒結同化同體粉末材料(如塑料粉、尼龍粉、蠟、陶瓷或)、金屬與粘結劑的混合粉或金屬粉等，經(jīng)過燒結與層層疊加后，更終形成所需的三維工件。

Then, the laser beam is scanned along the scanning path by the X-Y laser scanning instrument, and the homogeneous powder materials (such as plastic powder, nylon powder, wax, ceramic or), the mixed powder or metal powder of metal and binder are assimilated layer by layer. After sintering and stacking layer by layer, the required three-dimensional workpiece is finally formed.

這種制造方法具有成型速度快、精度高、表面質量好、后置處理簡單和省時等特點，是一個具有生命力的技術，為制造技術的發(fā)展創(chuàng)造了一種新方法。

This manufacturing method has the characteristics of fast forming speed, high precision, good surface quality, simple post-processing and time-saving. It is a technology with vitality and creates a new method for the development of manufacturing technology.

快速成型技術就是直接根據(jù)CAD模型快速生產(chǎn)樣件或零件的技術總稱。它集成了CAD技術、數(shù)控技術、激光技術和材料技術等現(xiàn)代科技成果，是制造技術的重要組成部分。

Rapid prototyping technology is the general term of rapid production of samples or parts directly based on CAD model. It integrates modern scientific and technological achievements such as CAD technology, numerical control technology, laser technology and material technology, and is an important part of advanced manufacturing technology.

它能根據(jù)CAD模型(電子模型)自動、直接、快速、精確地將設計思想物化為具有一定功能的原型或直接制造零件，在不用模具和工具的條件下生成幾乎任意復雜的零部件，解決了從設計到制造的快速對接問題。

It can automatically, directly, quickly and accurately materialize design ideas into prototypes with certain functions or directly manufacturing parts according to CAD model (electronic model), and generate almost any complex parts without dies and tools, thus solving the problem of rapid docking from design to manufacturing.

因此，該技術可以對產(chǎn)品設計進行快速評價及修改，有效地縮短了產(chǎn)品的研發(fā)周期，降低了開發(fā)成本，滿足了當今競爭口益激烈的市場對新產(chǎn)品快速開發(fā)和快速制造的要求，提高了產(chǎn)品的市場競爭力和企業(yè)的綜合競爭能力。

Therefore, the technology can quickly evaluate and modify product design, effectively shorten the product R & D cycle, reduce the development cost, meet the requirements of rapid development and rapid manufacturing of new products in today's competitive market, and improve the market competitiveness of products and the comprehensive competitiveness of enterprises.