What are the differences between NC machining and traditional machining
The numerical control processing technology is the organic combination of the conventional processing technology, the computer numerical control technology, the computer-aided design and the auxiliary manufacturing technology. With the development of technology, there are more and more parts that need precision machining in modern manufacturing, and the machining precision and the complexity of workpiece surface are required higher and higher. Therefore the numerical control processing obtains the widespread attention, but in saves the cost, the numerical control processing is higher than the traditional one. Below let’s talk the differences between them.
1.Processing Technology
In the common machining process, no matter it is the location datum, the clamping method, the cutting tool, the cutting method,etc all can be simplified, while the numerical processing is more complex, and these factors need to be fully considered, and even if the same processing tasks, CNC processing technology can have a number of plans and much more flexible.
2.CLAMPS AND FIXTURES
In the process of NC machining, not only the Coordinate Direction of fixture and machine tool should be fixed, but also the dimensional relations between parts and machine tool coordinate system should be coordinated. Moreover, the two steps of positioning and clamping need to be effectively controlled in the clamping process. And under the traditional machining technology, because the machining capacity of the machine itself is limited, it is necessary to carry out multiple clamping in the machining process. And the need to use special fixture, which led to fixture in the design and manufacturing costs are higher, invisibly increased the cost of production. The NC machining process positioning can be used to debug instruments, most cases do not need to carry out the design of special fixture, so its cost is relatively low.
3.Cutters
In the process of machining, the choice of cutting tools needs to be determined according to the different processing technology and processing methods. Especially in NC machining, the use of high-speed cutting is not only conducive to the improvement of processing efficiency, but also the quality of processing can be guaranteed, the probability of cutting deformation can be effectively reduced, and the processing cycle can be shortened, so in the tell under the cutting tool demand for further increase.
At present, there is a dry cutting method, this cutting method in the absence of cutting fluid or only a small amount of cutting fluid in the case of cutting, so the tool needs to have good heat resistance. Compared with common machining technology, NC machining technology has higher requirements on the performance of cutting tools.
