Features Of Rapid Prototyping
1. Freeform manufacturing
Freeform manufacturing is another term for rapid prototyping. The meaning of free-form manufacturing as one of the characteristics of rapid prototyping technology has two aspects。
First, it is not necessary to use a tool to make a prototype or a part, thereby greatly shortening the trial production cycle of the new product and saving the cost of the tooling。
Secondly, it is not limited by the complexity of the shape, and it can produce any shape or part with different shapes and structures and different materials.
2. Fast manufacturing efficiency
From the data obtained by CAD digital model or entity reverse to the original shape, it usually takes only a few hours or ten hours, and the speed is much faster than the traditional forming method. The project technology has improved man-machine communication in the design process in new product development, shortening the product design and development cycle.
The rapid mold technology, which uses a rapid prototyping machine as a master mold, can produce the actual product of the required material in a few days, and it takes at least several months to manufacture the product through the traditional steel mold. The application of this technology has greatly reduced the development cost of new products and the risk of companies developing new products.
3. Directly driven by the CAD model
Regardless of the RP manufacturing process, the materials are cumulatively formed by adding them point by point and layer by layer. Regardless of the rapid prototyping manufacturing process, it is also manufactured by directly or indirectly driving a rapid prototyping equipment system through a CAD digital model.
This processing method of making prototypes by material addition is a distinguishing feature of rapid prototyping technology that distinguishes traditional machining methods. This prototyping process, which directly or indirectly drives the rapid prototyping system from a CAD digital model, also determines the rapid and free-form manufacturing characteristics of rapid prototyping.
4. Highly integrated technology
When the backward Computer Aided Process Planning (CAPP) has been unable to realize the integration of CAD and CAM, the emergence of rapid prototyping technology has better filled the gap between CAD and CAM.
The high integration of new materials, laser application technology, precision servo drive technology, computer technology and numerical control technology together support the realization of rapid prototyping technology.
5. High economic efficiency
Rapid prototyping technology produces prototypes or parts without the need for tooling, and is not related to the complexity of the forming or part. Compared to traditional machining methods, the cost of the prototype or part itself is significantly reduced. In addition, rapid prototyping in the design visualization, appearance evaluation, assembly and functional inspection and the function of the rapid mold master can significantly shorten the product development trial cycle, but also bring significant time benefits.
It is precisely because of the outstanding economic benefits of rapid prototyping technology that the technology has been highly valued and quickly and widely applied by the manufacturing industry.
6. Precision is not as good as traditional processing
When the data model is layered, some data loss and layered manufacturing are inevitable. The phase transformation of the build-up and the internal stress generated by the solidification process also cause warpage, which fundamentally determines the accuracy limit of the RP shape.