How much do you know about CNC Machines?

How much do you know about CNC Machines?

With the rapid development of science and technology and social production, mechanical products are becoming more and more complex, and the requirements for the quality and productivity of mechanical products are getting higher and higher. In aerospace, military and computer industries, parts have high precision, complex shapes, small batches, frequent revisions, difficult processing, low production efficiency, high labor intensity, and difficult quality assurance. The automation of the machining process is the most important means to adapt to the above-mentioned development characteristics intelligently. In order to solve the above problems, a kind of flexible, general-purpose, high-precision, high-efficiency “flexible” automatic production equipment – numerical control machine tool came into being under this situation. At present, numerical control technology has gradually become popular, and numerical control machine tools have been widely used in industrial production, which has become an important development direction of machine tool automation.

What is a CNC machine tool?

CNC machine tool is a new type of mechanical and electrical integration processing equipment that uses digital information to control the machine tool according to a given static law and perform active processing.
CNC machine tools are the product of the combination of digital control technology and machine tools. Machine tool CNC technology is realized through machine tool processing technologies such as CNC gantry milling machines. The key to using CNC technology is to learn and use CNC machine tools well.
What are the characteristics of CNC machine tools ？

Compared with traditional machine tools, CNC machine tools have the following characteristics： 
（1) Highly flexible

The processing of parts on CNC machine tools mainly depends on the processing sequence. It is different from ordinary machine tools. It does not need to be manufactured, and many molds and fixtures need to be replaced. It is not necessary to frequently readjust the machine tool. Therefore, CNC machine tools are suitable for occasions where the processed parts are frequently changed, that is, suitable for the production of single pieces and small batches of products and the development of new products, thereby prolonging the production preparation cycle and saving the cost of a small amount of process equipment.

（2) High processing precision

The machining accuracy of CNC machine tools can generally reach 0.05-0.1MM. CNC machine tools are controlled in the form of digital signals. Every time the CNC device outputs a pulse signal, the moving parts of       the  machine tool move a pulse equivalent (0.001MM in general), and the machine tool moves The backlash of the transmission chain and the uniform error of the screw pitch can be compensated by the numerical control device, so the positioning accuracy of the numerical control machine tool is relatively high.

(3) The processing quality is stable and reliable
Processing the same batch of parts, on the same machine tool, under the same processing conditions, using the same tool and processing sequence, the tool trajectory is exactly the same, the consistency of the parts is good, and the quality is stable.
(4) High consumption rate
CNC machine tools can effectively reduce the processing time and auxiliary time of parts. The speed of sound of the spindle of CNC machine tools and the range of feed are large, allowing the machine tool to perform powerful cutting with a large amount of cutting. CNC machine tools are currently entering the era of high-speed machining. The rapid movement and positioning of the moving parts of CNC machine tools and high-speed cutting processing have greatly improved production rates. In addition, it can be used in conjunction with the tool magazine of the machining center to realize the continuous processing of multiple processes on one machine tool, shorten the turnaround time between processes of semi-finished products, and improve the production rate.
(5) Improve rest conditions
After the CNC machine tool is adjusted before processing, the program is input and started, and the machine tool can automatically and continuously process until the processing is completed. What the operator has to do is only program output, editing, parts loading and unloading, tool preparation, processing status observation, part inspection and other tasks. The labor intensity is greatly reduced, and the labor of machine tool operators tends to be intellectual tasks. In addition, the machine tools are generally combined, which is clean and safe.
(6) Use the modernization of consumption governance
The processing of CNC machine tools can accurately predict the processing time afterwards, standardize the tools and fixtures used, modernize management, and easily realize the standardization of processing information. At present, it has been organically combined with computer-aided design and manufacturing (CAD/CAM) Together, it is the basis of modern integrated production techniques

What is the meaning of CNC machine tools?

A country’s machine tool numerical control rate reflects the level of the country’s machine tool industry and machinery manufacturing industry, and is also one of the important indicators to measure a country’s technological progress. It is of great significance for realizing the automation of the production process, promoting technological progress and accelerating modernization. Developed countries regard numerical control technology as the strategic focus of the development of the machinery industry, and vigorously promote and develop numerical control machine tools.