CNC machining process originates from the conventional production process, which is a close combination of conventional production process, computer numerical control technology, computer-aided design and assisted productionaluminum cnc machining technology. Because of the rapid development of technology, the modern manufacturing industry requires precision machining of more and more parts, processing accuracy and the complexity of the workpiece surface regulations are increasingly high. Thus, CNC machining has gained widespread attention, but in terms of cost savings, CNC machining still has to be higher than traditional production costs. Here we will specifically introduce the difference between CNC machining and traditional machining process.

1、Production process

In the ordinary machining process, whether it is positioning benchmarks, clamping methods, tools, cutting methods and other levels can be simplified to solve, but the data production process is more complex, the need for full consideration of these factors, and even if the same processing task, CNC machining process can have more than one program, you can do the main line of multiple processing locations and processing tools to carry out the process arrangements, the process has Diversified characteristics, which is the difference between CNC machining process and traditional machining process.

2, clamping and fixture

In the CNC machining process, not only need fixtures and machine tool coordinates to ensure that the direction of the relative fixed, and the size of the parts and machine tool coordinate system associated with the harmony. And the clamping process requires effective control of the two processes of positioning and clamping. And the traditional machining process, because the machine tool itself is limited in processing capacity, so cheap cnc machiningneed to carry out in the process of several clamping. And the need to use special fixtures, which leads to fixtures in the design and manufacture of high costs, invariably enhance the product product cost. The CNC machining process positioning can be adjusted using the instrument, in most cases do not need to carry out the design of special fixtures, so relatively speaking its cost is relatively low.

3、Tools

In the process of processing, the choice of tools need to be determined according to the production process and processing methods are different. Especially in CNC machining, the use of high-speed cutting is not only beneficial to the improvement of processing efficiency, and processing quality can also be guaranteed, effectively reducing the chances of cutting deformation, so that the processing cycle is reduced, so the demand for cutting tools under the cutting informed further increase.

At present, there is also a dry cuttingadditive manufacturing rapid prototyping method, which is cutting without cutting oil or with only a small amount of cutting oil, so the tool needs to have good temperature resistance. Compared with the general machining process, the CNC machining process has higher regulations on the performance of the tool.