FAQ
Q: Is CNC rapid prototyping?
A: The accuracy of CNC machine tools could be 0.005mm with correct machine. Rapid prototyping technology has recently bridged this gap, but CNC is still the most accurate process. And if the tools and materials remain unchanged, their repeatability is better than rapid prototyping.
Q: What is rapid prototyping used for?
A: 1. Design verification and functional verification during the development of new products.
RP technology can quickly convert the CAD model of the product design into a physical physical model, which can easily verify the rationality, assembleability, and aesthetics of the designer's design ideas and product structure, and find that the problems in the design can be modified in time. If you use traditional methods, you need to complete multiple links such as drawing, process design, tooling and mold manufacturing, and the cycle is long and the cost is high. If it is directly put into production without design verification, once there is a design error, it will cause great losses.
2. Direct production of single parts, small batches and special complex parts.
For the parts of polymer materials, high-strength engineering plastics can be used for rapid molding to meet the requirements of use; for complex metal parts, they can be obtained by rapid casting or direct metal molding. This application has special significance for the aviation, aerospace and defense industries.
3.Rapid mold manufacturing.
Through various conversion technologies, the RP prototype is converted into various rapid molds, such as low-melting alloy molds, silicone molds, metal cold spray molds, ceramic molds, etc., for the production of small and medium-sized batch parts, to meet the needs of fast product replacement and increasing volume Small development trend. The field of rapid prototyping applications includes almost all industries in the manufacturing field, and has also been more and more widely used in industries such as medical treatment, ergonomics, and cultural relics protection.
Q: Will 3D printing replace CNC machining?
A: 1. The CNC machining industry is based on standards, whether it is spindles, tool interfaces, control systems, etc. However, there is currently no standard in the field of additive manufacturing-3D Printing, and it takes time to establish such standards.
2.In terms of processing efficiency, there is a wonderful 1: 3 rule, that is, the efficiency of CNC processing is three times that of additive manufacturing-3D printing. In the production field, efficiency is the lifeline of an enterprise, which is undoubtedly a factor that 3D printing cannot replace CNC Machining technology.
3.The surface accuracy of 3D printing cannot reach the level of CNC machining, which is why 3D printing cannot replace machining. Especially for precision components in aerospace, the requirements for dimensional tolerances are very strict. 3D printing can only cooperate with CNC Machining to complete parts manufacturing.
4.Because there seems to be a common misunderstanding that the future production methods should be converted to 3D printing. The relationship between 3D printing and traditional processing methods is more complementary than replacing. CNC Machining and 3D printing will coexist. 3D printing will become a part of the processing chain. How much of a complete part requires 3D printing depends on the condition of the workpiece.
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