Briefly describe the development history of CNC lathe parts

u200bNumerical control lathes are generally controlled by general-purpose or special-purpose computers. Therefore, numerical control is also called computerized numerical control (Computerized Numerical Control), or CNC for short. It is generally called CNC abroad, and the concept of NC is rarely used anymore. What is controlled is usually the position, angle, speed and other mechanical quantities and the switching quantities related to the flow of mechanical energy. The generation of numerical control depends on the emergence of data carriers and binary data operations. In 1908, perforated sheet metal interchangeable data carriers Coming out; at the end of the 19th century, a control system with paper as a data carrier and auxiliary functions was invented; in 1938, Shannon conducted rapid data calculation and transmission at the Massachusetts Institute of Technology in the United States, laying the foundation for modern computers, including computer digital control systems , CNC technology is developed in close combination with machine tool control. In 1952, the first CNC machine tool came out, which became an epoch-making event in the history of the world's machinery industry and promoted the development of automation. Numerical control technology is also called Computerized Numerical Control (CNC, Computerized Numerical Control), which is a technology that uses computers to realize digital program control. This technology uses a computer to execute the sequential logic control function of the movement track of the device and the operation of the peripherals according to the control program stored in advance. As a computer is used to replace the original numerical control device composed of hardware logic circuits, the storage, processing, calculation, logical judgment and other control functions of the input operation instructions can be realized through computer software, and the microscopic instructions generated by the processing are transmitted to The servo drive device drives the motor or hydraulic actuator to drive the equipment to run. Traditional mechanical processing is performed by manual operation of ordinary machine tools. During processing, the mechanical tool is shaken by hand to cut metal, and the accuracy of the product is measured by the eye with tools such as calipers. Modern industry has already used computer digitally controlled machine tools for operations. CNC machine tools can automatically process any products and parts directly in accordance with the procedures programmed by technicians in advance. This is what we call CNC machining. Numerical control processing is widely used in any field of all mechanical processing, and it is the development trend and important and necessary technical means of mold processing. CNC lathes, also known as CNC lathes, are computer digital controlled lathes. They are the most widely used and covered CNC machine tools in China, accounting for about 25% of the total number of CNC machine tools. CNC machine tools are mechatronics products that integrate multiple technologies such as machinery, electricity, hydraulics, pneumatics, microelectronics, and information. It is a machine tool with the advantages of high precision, high efficiency, high automation and high flexibility in mechanical manufacturing equipment. The technical level of CNC machine tools and their percentage of the output and total ownership of metal cutting machine tools is one of the important indicators to measure the overall level of a country's national economic development and industrial manufacturing. CNC lathe is one of the main varieties of CNC machine tools. It occupies a very important position in CNC machine tools. For decades, it has been widely valued by countries all over the world and has been rapidly developed. Since the advent of CNC lathes in the 1950s, due to the use of CNC lathes to process complex-shaped parts in single-piece production and small batch production, it has not only improved labor productivity and processing quality, but also shortened the production preparation cycle and reduced the skill of workers. Proficiency requirements. Therefore, it has become an important development direction for realizing technological innovation and technological revolution in single-piece, small-batch production. Countries all over the world are also vigorously developing this new technology. We know that for mass-produced parts, the use of automated and semi-automated lathes can already automate the production process. However, for single-piece, small-batch production parts, achieving automation has always been a problem. For a long period of time in the past, it has always been unable to solve the problem satisfactorily. Especially for parts with complex shapes and high machining accuracy requirements, they have been at a standstill on the road to automation. Although some application profiling devices have solved part of it, practice has proved that profiling lathes still cannot completely solve this problem. The emergence of CNC lathes (machine tools) has opened up a broad way to fundamentally solve this problem, so it has become an important development direction in mechanical processing.