The difference between CNC machining and traditional machining

The numerical control machining process originates from the conventional machining process, and is an organic combination of conventional machining process, computer numerical control technology, computer-aided design and auxiliary manufacturing technology. Due to the continuous development of technology, more and more parts need to be precisely machined in modern manufacturing, and the requirements for machining accuracy and surface complexity of workpieces are also getting higher and higher. Therefore, CNC machining has received widespread attention, but in terms of cost savings,CNC machining is still more costly than traditional machining. Let's introduce the difference between CNC machining and traditional machining technology in detail.

• 1. Processing technology

In ordinary machining process, no matter it is positioning reference, clamping method, tool, cutting method, etc., it can be simplified, but the data processing process is more complicated, and these factors need to be fully considered, and even if the same processing The CNC machining process can have multiple plans, and can arrange multiple processing parts and processing tools as the main line. The process has diversified characteristics, which is the difference between the CNC machining process and the traditional machining process.

• 2. Clamping and Fixtures

In the CNC machining process, not only the coordinate direction of the fixture and the machine tool must be relatively fixed, but also the dimensional relationship between the part and the machine tool coordinate system should be coordinated. Moreover, the two steps of positioning and clamping need to be effectively controlled during the clamping process. Moreover, under the traditional machining process, due to the limited processing capacity of the machine tool itself, it is necessary to perform multiple clamping during the machining process. Moreover, it is necessary to use a special fixture, which leads to higher costs in the design and manufacture of the fixture, which virtually increases the production cost of the product. The NC machining process positioning can be debugged by instruments, and in most cases, no special fixture design is required, so the cost is relatively low.

• 3. Tools
  

In the process of processing, the selection of cutting tools needs to be determined according to the different processing technology and processing methods. Especially in CNC machining, the use of high-speed cutting is not only conducive to the improvement of processing efficiency, but also the processing quality can be guaranteed, effectively reducing the probability of cutting deformation and shortening the processing cycle, so the demand for cutting tools is further increased under high-speed cutting .

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