3D printing rapid prototyping

So what are its characteristics? First, it adopts the method of increasing materials (such as coagulation, welding, cementation, sintering, aggregation, etc.) to form the required parts appearance, because of the RP technology in the process of manufacturing products won’t produce waste cause the pollution of environment, so in today’s modern pays attention to the ecological environment, this also is a green manufacture technology. Secondly, it has solved many problems in traditional processing and manufacturing for laser technology, numerical control technology, chemical industry, material engineering and other technologies. The wide application of rapid prototyping technology in China has played a supporting role in the development of manufacturing enterprises in China, enhanced the rapid response ability of enterprises to the market, improved the competitiveness of enterprises, and also made a significant contribution to the national economic growth.

 

Advantages of 3D printing prototypes

 

1. With good complex manufacturing capability, it can complete manufacturing difficult to be completed by traditional methods. The product is complex, and only through multiple rounds of design – prototype machine production – test – modification design – prototype machine reproduction – re-test process, through the prototype machine repeated test can timely find problems and correction. However, the output of the prototype is very small, and it takes a long time and high cost to adopt the traditional manufacturing method, resulting in a long development cycle and high cost.

 

2. Low cost and fast speed of small batch manufacturing can significantly reduce the development risk and shorten the development time. 3D printing ingot casting with planks do not need to traditional manufacturing mode, system, mold and die forging process, can rapid prototype production, low cost, and digital, the entire production process can be modified at any time, at any time, in a short time, a large number of verification test, thus significantly reduce the risk of developing, shorten the development time, reduce the development cost.

 

3. High material utilization, can effectively reduce the production cost. The traditional manufacturing is “material reduction manufacturing”, through the raw material billet cutting, extrusion and other operations, remove the excess raw materials, processing the required parts shape, the processing process of the removal of raw materials difficult to recycle, the waste of raw materials. 3D printing only adds raw materials where it is needed, and the material utilization rate is very high, which can make full use of expensive raw materials and significantly reduce the cost.

 

working principle:

Rapid Prototyping (RP) completely gets rid of traditional “removal” machining methods (ie partially removing material larger than the workpiece and obtaining the workpiece). Computer-aided design (CAD) and computer-aided manufacturing (CAM) are carried out using a new “growing” machining method (ie, gradually superimposing a layer of small blanks into large workpieces). Advanced technologies such as (CAM), computer numerical control (CNC), precision servo drives, lasers and material science are integrated into a new technology. The basic idea is that any three-dimensional part can be regarded as many equal-thickness two-dimensional contours superimposed along the coordinate direction. According to the 3D design model of the product formed on the computer, the 3D model in the CAD system can be cut into a series of plane geometric information, and the laser beam selectively cuts a layer of paper (or a layer of liquid resin is cured, and a layer of powder material is sintering), or the injection source selectively sprays a layer of adhesive or hot melt material and contours each segment and into the three-dimensional product. Since 3D USA introduced the first commercial SLA rapid prototyping machine in 1988, there have been more than ten different prototyping systems, including SLASLS, LOM and FDM.

Since traditional processing machine tools and molds are not required, the cost of traditional processing methods is only 30%~50% of the working time, and the cost is 20%~35%. The design ideas can be automatically, directly, quickly and accurately transformed into certain functions. Or directly manufacture the model of the product, so that the product design can be quickly evaluated, modified and functionally tested, which greatly shortens the product development cycle. The application of rapid prototyping technology in the process of new product development of enterprises can greatly shorten the development cycle of new products, ensure the time for new products to be put on the market, and improve the rapid response ability of enterprises to the market. At the same time, it can also reduce the risk of mold opening and the cost of new product development; timely detection of product design errors, early detection of errors, and early changes. A lot of losses caused by subsequent process changes are avoided, and the one-time success rate of new product debugging is improved. Therefore, the application of rapid prototyping technology has become an important strategy for the development of new products in the manufacturing industry.


Post time: Jun-21-2022

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