Features and working principle of CNC

    Compared with ordinary machine tools, CNC machine tools have the following characteristics:

    ●High processing precision and stable processing quality;

    ●Multi-coordinate linkage can be carried out, and parts with complex shapes can be processed;

    ●When machining parts change, generally only need to change the NC program, which can save production preparation time;

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

    ●The machine tool has a high degree of automation, which can reduce labor intensity;

    ●Higher requirements for the quality of operators and higher technical requirements for maintenance personnel.

    working principle

    CNC machine tools generally consist of the following parts:

    ●Host, which is the main body of the CNC machine tool, including the machine body, column, spindle, feed mechanism and other mechanical parts. It is a mechanical part used to complete various cutting processes.

    ●Numerical control device is the core of CNC machine tool, including hardware (printed circuit board, CRT display, key box, paper tape reader, etc.) and corresponding software, used to input digital part program, and complete the storage and data of input information The transformation, interpolation calculation and realization of various control functions.

    ●Drive device, which is the drive component of the CNC machine tool actuator, including spindle drive unit, feed unit, spindle motor and feed motor. It realizes the spindle and feed drive through the electric or electro-hydraulic servo system under the control of the numerical control device. When several feeds are linked, the processing of positioning, straight line, plane curve and space curve can be completed.

    ●Auxiliary devices, some necessary supporting parts of index-controlled 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, chip removal devices, exchange tables, CNC turntables and CNC indexing heads, as well as cutting tools and monitoring and testing devices.

    ●Programming and other ancillary equipment can be used to program and store parts outside the machine.

    Purposeedit

    CNC lathes are mainly used for large-scale machining of parts, and their machining methods include turning outer circle, boring, turning plane and so on. Programs can be written, suitable for mass production, and the production process is highly automated.

    Since the Massachusetts Institute of Technology in the United States developed the world’s first CNC machine tool in 1952, CNC machine tools have been widely used in the manufacturing industry, especially in the automotive, aerospace, and military industries. CNC technology is used in both hardware and software. , Both have rapid hair.