The difference between NC machining and traditional machining

NC machining technology originates from traditional machining technology, which is a traditional machining technology. Computer numerical control technology. The organic combination of computer aided design and aided manufacturing technology. With the continuous development of technology, more and more parts in modern manufacturing industry need precision machining, and the requirements of machining accuracy and workpiece surface complexity are higher and higher. Therefore, NC machining has attracted extensive attention, but in terms of cost saving, NC machining is still higher than the traditional machining cost. Let's introduce the difference between NC machining and traditional machining technology in detail.

1. Processing technology

In the ordinary machining process, the processing can be simplified in terms of positioning datum, fixture method, cutting tool, cutting method, etc., but the data processing process is relatively complex, so these factors need to be fully considered. Even for the same processing task, the NC processing process can have a variety of schemes, and a variety of processing parts and processes can be used as the main line of process arrangement. The process has diversified characteristics, This is the difference between NC machining process and traditional machining process.

2. Fixture

In the process of NC machining, we should not only ensure that the coordinate direction of fixture and machine tool is relatively fixed, but also coordinate the dimensional relationship between parts and machine tool coordinate system. In addition, in the clamping process, it is necessary to effectively control the two steps of positioning and clamping. In addition, in the traditional machining process, due to the limited machining capacity of the machine tool itself, it needs to be clamped for many times in the machining process. In addition, special fixtures need to be used, which leads to high design and manufacturing costs of fixtures, which actually increases the production cost of products. The positioning of NC machining process can be debugged by instruments. In most cases, there is no need to design special fixtures, so the cost is relatively low.

3. Cutting tools

In the machining process, the selection of cutting tools needs to be determined according to different machining processes and methods. Especially in NC machining, the use of high-speed cutting is not only conducive to improve the machining efficiency, but also ensure the machining quality, effectively reduce the probability of cutting deformation and shorten the machining cycle. Therefore, when informing cutting, the demand for cutting tools is further increased.

At present, there is also a dry cutting method, which cuts without cutting fluid or only a small amount of cutting fluid, so the tool needs to have good heat resistance. Compared with ordinary machining technology, NC machining technology has higher requirements for tool performance.