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.
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.
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
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.
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.
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.
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.
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.