The difference between NC machining and traditional machining

Numerical control machining technology originated from conventional machining technology, is the organic combination of conventional machining technology, computer numerical control technology, computer aided design and aided manufacturing technology. Due to the continuous development of technology, the modern manufacturing industry needs more and more precision machining parts, processing precision and the complexity of the workpiece surface requirements are also higher and higher. Therefore, CNC machining has been widely concerned, but in cost saving, CNC machining is still higher than the traditional processing cost. Here we will introduce the difference between numerical control machining and traditional machining technology.

1. Processing technology

In the ordinary machine processing technology, no matter the positioning datum, clamping mode, cutting tool, cutting method and other aspects can be simplified, but the data processing technology is more complex, need to take these factors into full consideration, and even if the same processing task, CNC processing technology can have multiple programs, Multiple machining parts and machining tools can be arranged on the process as the main line. The process has the characteristics of diversification, which is the difference between numerical control machining technology and traditional machining technology.

2. Clamping and fixture

In NC machining technology, not only the coordinate direction of fixture and machine tool should be fixed, but also the dimension relationship between parts and machine coordinate system should be coordinated. And in the process of clamping need to position and clamping these two steps for effective control. And under the traditional machining technology, due to the limited processing capacity of the machine tool itself, it is necessary to carry out several clamping in the process of processing. And the need to use special fixture, which leads to the fixture in the design and manufacturing of higher costs, virtually increased the production cost of the product. And CNC machining process positioning can be used to debug the instrument, in most cases do not need to carry out the design of special fixture, so relatively speaking, its cost is relatively low.

3. Tool

In the process of machining, the choice of cutting tool needs to be determined according to the different processing technology and processing method. Especially in numerical control machining, the use of high-speed cutting is not only conducive to the improvement of processing efficiency, and processing quality can also be guaranteed, effectively reduce the probability of cutting deformation, so that the processing cycle is shortened, so that the demand for cutting tools is further increased under the cutting.

At present, there is also a dry cutting method, this cutting method in the case of cutting without cutting fluid or only add a small amount of cutting fluid, so the tool needs to have good heat resistance. Compared with ordinary machining technology, NC machining technology has higher requirements for tool performance.