With the development of rapid prototyping and rapid mold manufacturing technology, in the near future, high-precision rapid molds will surely have significant development. Mainly in the following aspects:
First, improve the performance of fast molds and improve the accuracy of fast molds. Good mold performance and high mold accuracy are key issues for rapid mold application and promotion.
1. Improve the performance of fast molds: In order to obtain high-quality product parts and better mold performance, it is required that the working surface of the rapid mold is hard and wear-resistant, and can withstand the temperature cycle of high temperature and drastic change. It has high thermal conductivity so that heat can be transferred quickly from the workpiece. In addition, it should have good fracture toughness to withstand fatigue cycles. In order to enable the mold to meet the above performance requirements, the conventional method is to use heat treatment or surface coating. In addition, more advanced methods can be used to change the performance of the mold: 1. Using functionally graded materials; 2. Using computer-aided engineering and virtual manufacturing techniques.
2. Improve the accuracy of fast molds. Due to the layered manufacturing principle of RP technology and the certain errors in the RP and RT conversion process and the reasons of the RT material itself, the accuracy of the original prototypes is directly or indirectly manufactured to produce precise and rapid molds. A key issue. With the development of rapid prototyping and rapid mold manufacturing technology, the continuous integration of other technologies with RP and RT technologies, in the near future, high-precision rapid molds will have significant development.
Second, the development of a variety of models of mold making technology. With the development of science and technology, in the field of manufacturing, three models of molds have emerged.
1. Traditional molds. It is also used in traditional manufacturing processes, it is suitable for mass production, usually metal materials are machined.
2, no mold forming. This was the model proposed in the early 1990s, which envisages designing products on CAD systems and producing the products directly on a computer-controlled
device without the need for any molds.
3. Disposable molds. This is an intermediate mode between the first two modes. This mode can significantly reduce the cost and time of manufacturing the mold. This mold can be used to produce a batch of products, and the used molds can be used to produce discarded molds. After that, new molds can be made to produce more products.
Rapid soft molds and fast transition molds in fast molds are already close to the goal of disposable molds. With the improvement of science and technology, the goal of disposable molds can be achieved and applied better. Traditional molds have an irreplaceable role in many occasions. In a sense, one of the main purposes of rapid mold manufacturing is to rapidly develop and make traditional molds. Moldless forming technology will be the first to be applied in some fields, and moldless forming is the goal of the future industry. For a long period of time in the future, these three models of mold manufacturing technology will coexist and play an important role.
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