What does CNC mean?

CNC (Numerical Control Machine Tool) is the abbreviation of computer numerical control, and it is an automatic machine tool controlled by programs. The control system can logically process the program specified by the control code or other symbolic instructions, and decode it through the computer, so that the machine tool can perform the specified action, and the blank material can be processed into semi-finished parts through tool cutting.

NC programming belongs to NC machining industry, which is divided into manual programming and computer (PC) programming. If it is only simple plane machining and regular angle (such as 90. 45。 30。 60 degrees) bevel machining, manual programming is ok. If it is aimed at machining complex surfaces, it depends on a computer (PC).

Computer (PC) programming depends on various programming softwares (such as Pro/E, UG and CAXA), which are mainly based on the principles of (CAD design, CAM manufacturing and CAE analysis). When learning this kind of software, the most important thing is to learn how to build a three-dimensional mathematical model. Only by establishing the mathematical model can the machining route be specified according to the actual situation, and finally the NC program can be generated through the machining route. This kind of books generally only talk about the operation of computer (PC) software. Buy at Xinhua Bookstore or a learning bookstore that sells computer software!

Computer numerical control machine tool is an automatic machine tool with program control system. The control system can logically process and decode the program with control codes or other symbolic instructions, so as to make the machine tool move and process parts. English abbreviation CNC, also known as CNC machine tools and CNC lathes, is called computer gong in Hong Kong and the Pearl River Delta region of Guangdong.

CNC machine tools usually consist of the following parts:

1, the main machine, that is, the main body of the CNC machine tool, including the machine body, columns, spindle, feed mechanism and other mechanical parts. It is a mechanical component used to complete various cutting processes.

2. CNC device is the core of CNC machine tools, including hardware (printed circuit board, CRT display, key box, paper tape reader, etc.). ) and corresponding software, which are used to input digital parts programs and complete the storage of input information, data conversion, interpolation operation and various control functions.

3. The driving device is the driving part of the executive mechanism of CNC machine tools, including spindle driving unit, feed unit, spindle motor and feed motor, etc. Under the control of numerical control device, the spindle and feed drive are realized by electric or electro-hydraulic servo system. When multiple feeds are linked, positioning, straight line, plane curve and space curve can be processed.

4. Auxiliary devices refer to some necessary parts of CNC machine tools to ensure the operation of CNC machine tools, such as cooling, chip removal, lubrication, lighting and monitoring. It includes hydraulic and pneumatic devices, chip removal devices, exchange tables, numerical control turntable and numerical control indexing head, as well as cutting tools and monitoring and testing devices.

5. Programming and other auxiliary equipment can be used to program and store parts outside the machine.

References:

Excerpted from People's Network China CNC Machine Tool "Counter Attack" Road