What are the characteristics of CNC machine tools?

Abstract: As a typical mechatronics product, CNC machine tools play a key role in large-scale efficient mechanical production and modern high-tech project operation. What are the characteristics of CNC machine tools? What is the significance of CNC machine tools? Let's take a look! What are the characteristics of CNC machine tools and what is the significance of CNC machine tools?

Significance of CNC machine tools

1, CNC machine tools can process complex curved parts that are not allowed or difficult to be processed by ordinary machine tools more accurately and meticulously. Because NC machine tool is a modern machine tool developed on the basis of computer high technology, it has strong differential compensation performance. When using CNC machine tools, because the corresponding programs are input in advance, CNC technology can accurately calculate the instantaneous motion of each coordinate axis and realize multi-axis linkage, so it can be combined into complex curves or surfaces, thus processing various complex curved parts. Moreover, in the design and application of CNC machine tools, due to the powerful computing power of computer technology, the error of parts can be minimized, and the production of parts with high manual operation risk can be handed over to the machine for automatic operation, thus reducing the danger in production.

2. CNC machine tools lead the development of new technologies. The appearance of CNC machine tools has promoted a series of developments in related technical fields, especially the practical and engineering development of computer technologies such as CAD/CAM. It promotes the development of CAD/CAM technology to a higher and higher level, and further develops the computer-aided process planning (CAPP) database of integrated manufacturing production system and the automatic generation, processing and transmission of related information. It can be said that numerical control technology is not only the link between CAD/CAM, but also the bridge to integrated CAD/CAM. The development of CNC machine tool technology will lead the rapid development of some related new technologies in the future.

3. Numerical control technology modernizes traditional industrial labor means. In the era of modern industrial labor, the index of dividing the national economic development level and modern large-scale mechanized production mainly depends on the technical equipment level of a country. The application of high-tech numerical control technology not only makes the mechanical equipment transition from traditional rigid automation to flexible automation, but more importantly, numerical control technology can connect the process preparation automation and process automation of mechanical processing into a whole, and more importantly, it can also connect the processing process with automatic detection, and combine production planning, scheduling and manufacturing process. The development and application of mechanization technology in the direction of numerical control technology in the new century will be a new era to create a brand-new "intelligent manufacturing system".

4. Improve the quality of workers. With the development of high-tech level, the application of numerical control technology in machining requires the integration of labor structure on the basis of improving the quality level of workers. This requires that the labor force in actual operation must have modern new technical knowledge and production skills, and the cultural quality and technical quality of the labor force should also be changed to better adapt. The popularization and application of numerical control technology has greatly changed the labor structure and organizational structure of mechanical processing enterprises. Therefore, all industrialized countries attach great importance to the cultivation of personnel quality in order to realize the modernization of workers' quality.

5. Accelerate the modernization level and efficiency of working objects. The object and efficiency of modern industrial labor are mainly reflected on the basis of product quality and econometrics in the production process. After the application of numerical control technology in mechanized production and processing, it not only improves the overall labor production efficiency and product quality level, but also improves the technical level of modern mechanical production and significantly improves the economic benefits of production.

6. Promote the upgrading of product structure and industrial institutions in the machine tool industry. The development of numerical control technology has made profound changes in the product structure and production mechanism of the existing machine tool industry. The machine tool products of the previous era will inevitably undergo qualitative changes after applying modern numerical control technology. At present, the mainframe of typical mechatronics products tends to be modular, serialized and standardized, which will promote the establishment of a modern CNC machine tool with stable support relationship. Adopt various technical schemes to gradually realize the specialized production of machine tools.

7, CNC machine tool level represents the country's military strategic position. CNC machine tool technology is an important strategic technology to develop military industry. A large number of national defense strategic materials are processed by advanced CNC machine tools. Western countries have been taking restrictive measures on the export of advanced CNC machine tool technology. This can better explain that CNC machine tool technology plays a strategic and fundamental role in the national economy in national development. Therefore, our country should vigorously develop numerical control technology on the basis of national economic development to show our country's important strategic position in the world.

What are the characteristics of CNC machine tools?

The operation and monitoring of CNC machine tools are completed in this CNC unit, which is the brain of CNC machine tools. Compared with ordinary machine tools, CNC machine tools have the following characteristics:

1, which has strong adaptability to processing objects, adapts to the characteristics of single-piece production of molds and other products, and provides suitable processing methods for mold manufacturing;

2. High processing precision and stable processing quality;

3, multi-coordinate linkage can be carried out to process parts with complex shapes;

4, processing parts change, generally only need to change the numerical control program, can save production preparation time;

5. The machine tool itself has high precision and rigidity, and can choose favorable processing dosage and high productivity (generally 3~5 times that of ordinary machine tools);

6. The machine tool is highly automated, which can reduce the labor intensity;

7, conducive to the modernization of production management. Numerical control machine tools use digital information and standard codes to process and transmit information, and adopt computer control mode, which lays the foundation for the integration of computer-aided design, manufacturing and management.

8. Higher quality requirements for operators and higher technical requirements for maintenance personnel;

9. High reliability.

Compared with traditional machine tools, CNC machine tools have the following characteristics.

1. Machining parts on a highly flexible CNC machine tool mainly depends on the machining program. Unlike ordinary machine tools, there is no need to manufacture CNC machine tools, many molds and fixtures are replaced, and the machine tools are often readjusted. Therefore, CNC machine tools are suitable for frequent replacement of machined parts, that is, for the production of single small batch products and the development of new products, thus shortening the production preparation cycle and saving a lot of process equipment costs.

2. High machining accuracy The machining accuracy of CNC machine tools can generally reach 0.05-0. 1 mm, and the CNC machine tools are controlled in the form of digital signals. Every time the numerical control device outputs a pulse signal, the moving parts of the machine tool move by a pulse equivalent (generally 0.05-0.1mm), and the average error of the reverse clearance and pitch of the machine tool feed transmission chain can be compensated by the rows of the numerical control machine tool. Therefore, the positioning accuracy of CNC machine tools is compared.

3. The processing quality is stable, and the same batch of parts can be processed reliably. On the same machine tool, under the same processing conditions, using the same tools and processing procedures, the tool paths are exactly the same, the parts are consistent and the quality is stable.

4. High-productivity CNC machine tools can effectively reduce the processing time and auxiliary time of parts. The spindle speed of CNC machine tools is sound and the five-axis linkage machining center and feed range are large, allowing the machine tools to carry out powerful cutting with large cutting volume. CNC machine tools are entering the era of high-speed machining. The rapid movement and positioning of moving parts of CNC machine tools and high-speed cutting greatly improve productivity. In addition, it can also be used in conjunction with the tool library of machining center to realize continuous machining of multiple processes on one machine tool, which reduces the turnaround time between semi-finished processes and improves productivity.

5, improve the working conditions of CNC machine tools to adjust before processing, input the program and start, the machine tool can automatically continuous processing until the end of processing. What operators have to do is to input and edit programs, assemble and disassemble parts, prepare tools, observe the machining state, check parts, etc. The labor intensity is greatly reduced, and the work of machine tool operators tends to be intelligent. In addition, machine tools are generally combined, clean and safe.

6. Using modern CNC machine tools for production management can accurately estimate the processing time in advance, and the tools and fixtures used can be standardized, the management is modern, and it is easy to realize the standardization of processing information. It has been organically combined with computer-aided design and manufacturing (CAD/CAM), which is the basis of modern integrated manufacturing technology.