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What is the difference between CNC machine tools and traditional machine tools

2018/6/9 12:25:14 Viewers:
CNC machine tool is the abbreviation of Computer numerical control machine tools. It is an automatic machine equipped with program control system. The control system can logically handle the program with control code or other symbol instructions, and decode it, use the code number and input the numerical control device through the information carrier. After processing, all kinds of control signals are sent out by the numerical control device to control the movement of the machine tool and automatically process the parts according to the shape and size required by the drawings. Today, let's look at the difference between numerical control machine and traditional machine tool.
1. High processing precision
The machining precision of the NC machine can reach 0.05 to 0.1MM, and the numerical control machine is controlled by the digital signal. Each output of a pulse signal, then the moving part of the machine tool moves a pulse equivalent (generally 0.001MM), and the average error of the reverse clearance and the screw distance of the machine tool feed drive chain can be controlled by the numerical control device. Therefore, the positioning accuracy of CNC machine tools is relatively high.
2. High productivity
CNC machine tools can effectively reduce the processing time and auxiliary time of the parts. The spindle speed and feed range of the CNC machine tool are large, allowing the machine tool to carry out the powerful cutting of the large cutting quantity. CNC machine tools are entering the era of high speed machining. The rapid movement and location of moving parts of CNC machine tools and high-speed machining have greatly improved productivity. In addition, with the tool library of the processing center, it can be used in a machine tool for continuous processing of multiple processes, reducing the turnover time between the semi-finished products and increasing the productivity.
3. Make use of the modernization of production management
The machining of CNC machine tools can estimate the processing time in advance, standardize the tool and fixture used, modernize the management, and easily standardize the processing information. It has been combined with the computer aided design and manufacturing (CAD/CAM) organically, and it is the basis of modern integrated manufacturing technology.
4. Improve labor conditions
Before the NC machine is processed, the machine can be automatically and continuously processed until the processing is finished. The operator has to do only the input, editing, parts handling, tool preparation, the observation of the machining state, the inspection of the parts and so on. The labor intensity is greatly reduced, and the labor of the machine operator tends to be intelligent. In addition, machine tools are generally combined, clean and safe.


5. The quality of processing is stable and reliable
Processing the same batch of parts, in the same machine tool, under the same machining conditions, using the same tool and processing program, the tool path of the cutter is exactly the same, the parts have good consistency, and the quality is stable.


6, with high flexibility
Machining parts on CNC machine tools, mainly depends on the processing program, it is different from the ordinary machine tool, do not have to make, replace many moulds and jig, do not need to adjust the machine tool regularly. Therefore, the CNC machine tool is suitable for the frequently replaced parts of the processed parts, that is, it is suitable for single piece, small batch production and the development of new products, thus shortening the production preparation period and saving the cost of a large number of technological equipment.