The difference between NC machining and traditional machining technology

NC machining technology is derived from conventional machining technology, which is an organic combination of conventional machining technology, computer numerical control technology, computer aided design and auxiliary manufacturing technology. With the continuous development of technology, more and more parts need to be precision machined in modern manufacturing industry, and the requirements for machining accuracy and surface complexity of workpieces are becoming higher and higher. Therefore, NC machining has been widely concerned, but in terms of cost saving, NC machining is still higher than traditional machining. Next, we will specifically introduce the difference between CNC machining and traditional machining technology.

1. Processing technology

In the ordinary machining process, no matter the positioning reference, clamping mode, cutting tool, cutting method, etc., can be simplified, but the data processing process is relatively complex, and these factors need to be fully considered. Moreover, even if the same processing task, the NC processing process can have multiple schemes, and multiple processing positions and processing tools can be arranged as the main line, The process has the characteristics of diversification, which is the difference between the NC machining process and the traditional machining process.

2. Clamping and fixture

In the NC machining process, not only the coordinate direction of the fixture and the machine tool should be relatively fixed, but also the dimensional relationship between the parts and the machine tool coordinate system should be coordinated. And the two steps of positioning and clamping need to be effectively controlled during the clamping process. Moreover, under the traditional machining process, because the machining capacity of the machine tool is limited, it needs to be clamped many times during the machining process. Moreover, it needs to use special fixtures, which leads to high costs in the design and manufacturing of fixtures, and invisibly 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. Cutter

In the process of machining, the selection of cutting tools needs to be determined according to the different machining processes and methods. Especially in numerical control machining, the use of high-speed cutting is not only conducive to the improvement of machining efficiency, but also to the guarantee of machining quality, which effectively reduces the probability of cutting deformation and shortens the machining cycle. Therefore, the demand for cutting tools under the condition of high-speed cutting is further increased.

At present, there is also a dry cutting method, which performs cutting without adding cutting fluid or only adding a small amount of cutting fluid. Therefore, the tool needs to have good heat resistance. Compared with ordinary machining technology, CNC machining technology has higher requirements on the performance of tools.