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 by 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 processing, manual programming is ok. If it is aimed at machining complex surfaces, it depends on the computer (PC).

Computer (PC) programming depends on various programming software (such as Pro/E, UG, CAXA) and is mainly based on the principles of (CAD design, CAM manufacturing, CAE analysis). When learning this kind of software, the most important thing is to learn how to build a three-dimensional mathematical model. Only when the mathematical model is established 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 computer (PC) software operation. Go to Xinhua Bookstore, or go to the learning bookstore that sells computer (PC) software!

Computer numerical control machine tool is an automatic machine tool with program control system. The control system can use control codes or other symbolic instructions to logically process and decode the program, 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 Guangdong Pearl River Delta.

CNC machine tools generally consist of the following parts:

1, the main machine, that is, the main body of the CNC machine tool, including the machine bed, column, 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 device, refers to some necessary parts of CNC machine tools, to ensure the operation of CNC machine tools, such as cooling, chip removal, lubrication, lighting, monitoring, etc. It includes hydraulic and pneumatic devices, a chip removal device, an exchange workbench, a numerical control turntable and a numerical control indexing head, as well as a cutter and a monitoring detection device.

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

References:

From People's Daily Online, China CNC Machine Tool "Counter Attack" Road