Numerical control (NC) technology refers to the technology of controlling the action of one or more mechanical devices with digital instructions composed of numbers, characters and symbols. Numerical control generally uses general or special computers to realize digital program control, so numerical control is also called computerized numerical control, or CNC for short. Generally called CNC abroad, the concept of NC is rarely used again. CNC lathe, namely turning center, is a kind of high precision and high efficiency automatic machine tool. The machine tool is equipped with multi-station turret or power turret, which has a wide range of machining performance, and can process linear cylinders, inclined cylinders, circular arcs, threads, grooves, worms and other complex workpieces. It has many compensation functions such as linear interpolation and circular interpolation, and has played a good economic effect in the mass production of complex parts.
Numerical control technology is a technology that integrates computer technology, automatic control technology, measurement technology, modern machinery manufacturing technology and micro technology.
Electronic technology, information processing technology and other multidisciplinary integrated technologies have developed rapidly in the application field in recent years.
A comprehensive high technology. It is to adapt to the processing of high-precision, high-speed and complex parts.
Automation, digitalization, flexibility, informationization, integration and networking are the soul and core of modern machine tool equipment.
Heart has a wide range of applications and broad application prospects.
Numerical control technology is the basis of advanced manufacturing technology, and it is a high-tech developed by comprehensively applying technologies such as computer, automatic control, electric drive, automatic detection, precision machinery manufacturing and management information. As the main equipment of NC machining, NC machine tool is a typical mechatronics product. CNC machine tools represent the modernization level of a country's manufacturing industry. With the rapid development of modern science and technology, manufacturing technology and automation level have become an important symbol to measure the economic development level of a country or region.
The programming process of CNC machine tools mainly includes: part drawing analysis, process treatment, mathematical treatment, part programming and program verification. According to the types of machine tools used, there are many kinds of fixtures, which can be divided into lathe fixtures, milling machine fixtures, drilling machine fixtures, boring machine fixtures, machining center fixtures and other fixtures. According to the power source of driving fixture, it can be divided into manual fixture, pneumatic fixture, hydraulic fixture, electric fixture, magnetic fixture and self-clamping fixture.
Numerical control turning is to input the programmed machining program into a numerical control device, and the numerical control device converts the input information into command signals to drive the servo mechanism. Finally, the servo mechanism controls various actions of the machine tool to automatically process parts. It can be seen that programming is an important work for NC machine tools to process parts, which plays an important role in the effective use of NC machine tools. The programming of NC machining is also called NC programming. In NC programming, the parts must be analyzed, and the technological process and parameters of all processed parts must be written in the specified code and program format. It can be seen that NC programming is a combination of process and program, and it is very practical. This paper discusses the NC machining of shaft parts: starting with the blank drawing and part drawing, analyzing the machining process, determining the machining route, and then carrying out NC programming. In the meantime, the description of the part machining program can show the meaning of the program segment more clearly.