The difference between CNC machining and traditional machining

CNC processing technology is derived from conventional processing technology and is an organic combination of conventional processing technology, 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 precision machined in the modern manufacturing industry, and the machining accuracy and surface complexity requirements of the workpiece are also getting higher and higher.Therefore, CNC machining has received widespread attention, but in terms of cost savings, CNC machining is still higher than traditional processing costs.Below we will specifically introduce the difference between CNC machining and traditional machining technology.

1. Processing technology

In ordinary machining processes, whether it is positioning reference, clamping method, tool, cutting method, etc., can be simplified, but the data processing technology is more complex, and these factors need to be fully considered, and even if the same processing task, CNC machining technology can have multiple programs, multiple machining parts and machining tools can be used as the main line to arrange the process, and the process has diversified characteristics, which is the difference between CNC machining technology and traditional machining technology.

2. Clamping and fixture

In the CNC machining process, it is not only necessary to ensure that the coordinate directions of the fixture and the machine tool are relatively fixed, but also to coordinate the dimensional relationship between the parts and the machine tool coordinate system.Moreover, the two steps of positioning and clamping need to be effectively controlled during the clamping process.Moreover, under the traditional machining technology, due to the limited processing capacity of the machine tool itself, it is necessary to perform multiple clamping during the processing process.Moreover, special fixtures need to be used, which leads to higher costs in the design and manufacture of fixtures, which virtually increases the production cost of the product.The positioning of CNC machining technology can be debugged using instruments, and in most cases there is no need to design special fixtures, so its cost is relatively low.

3. Knives

In the processing process, the choice of tool needs to be determined according to the different processing techniques 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 chance of cutting deformation and shortening the processing cycle, so the demand for cutting tools under high-speed cutting has further increased.

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

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