Rapid prototyping technology is a new multidisciplinary integrated manufacturing technology. In the 1980s, with the greatly improvement and application of computer-aided design, product modeling and design capabilities have been great improved, product design is completed, however, before mass production, must be made out samples to express the design concept, rapid feedback for product design, and product design to assess the feasibility and feasibility studies. In today's increasingly competitive market, time is effective. In order to improve the competitiveness of product markets, from product development to volume production of the whole process and have an urgent requirement to reduce the cost and increase the speed. The emergence of rapid prototyping technology for the solution of this problem provides an effective way to much domestic and international attention. Now the cnc rapid prototyping technology breakthrough in traditional "from rough to cutting to finished parts processing mode, creating a precedent without tool making parts, is a thin layer of an unprecedented superposition processing methods.
Rapid Prototyping Basic Principles
Rapid prototyping technology is the principle of making discrete layered prototype general principle: product 3D CAD models to hierarchical discrete to discrete plane geometry information layer by layer processing piled raw materials to generate solid models. The technical set integrates computer technology, laser processing technology, new material technology in one, rely on CAD software to establish a three-dimensional solid model in the computer, and cut into a series of plane geometry, in order to control the direction and speed of the scanning of the laser beam, bonding, sintering, polymerization, or chemical reaction means layer selectively processing of raw materials, thus achieving rapid accumulation of produced product solid models. Nowadays, the plastic rapid prototyping is the mostly widely used in all industries.
Development of Rapid Prototyping
The concept of rapid prototyping technology that RP (Rapid Prototyping Technology) concept put forward can be traced back to 1979. The Institute of Industrial Science of the University of Tokyo, Japan in the Chuanwei male professor invented laminated model modeling method. And in 1980, Xiaoyu Hideo light modeling method the vision put forward in 1984, the pill Valley Yoji continue to study and trial production in 1987. In 1988, 3D systems pioneered practical device - laser dimensional modeling of rapid prototyping that SLA, and year-on-year sales growth of 30% to 40% increase in sales in the world market. In recent years, with the scanning galvanometer improved performance, as well as the development of materials science and computer technology, the rapid prototyping technology has matured, and officially entered in 1994 to promote the universal stage.
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