CNC machine tool is the abbreviation of digital control machine tool, and it is an automatic machine tool equipped with a program control system. The control system can logically process programs having control code or other symbolic instruction specifications and decode them to cause the machine to act and machine parts.

CNC machine control unit

The operation and monitoring of CNC machine tools are all done in this CNC unit. It is the brain of CNC machine tools.

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

● High processing precision and stable processing quality;

● Can carry out multi-coordinated linkage and can process parts with complex shapes;

● When processing parts change, generally only need to change the numerical control program, which can save production preparation time;

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

● High degree of automation of machine tools can reduce labor intensity;

● High quality requirements for operators and higher technical requirements for maintenance personnel.

CNC machine tools generally consist of the following components:

● The host, he is the subject of CNC machine tools, including the machine body, column, spindle, feed mechanism and other mechanical components. He is a mechanical part used to complete a variety of cutting operations.

● Numerical control device is the core of CNC machine tools, including hardware (printed circuit board, CRT monitor, key box, paper tape reader, etc.) and corresponding software for inputting the digitized part program and completing the input information storage and data Transformation, interpolation, and implementation of various control functions.

● Driving device, he is the driving part of the CNC machine actuator, including spindle drive unit, feed unit, spindle motor and feed motor. He realizes the spindle and feed drive by electric or electrohydraulic servo system under the control of the numerical control device. When several feeds are linked, the positioning, straight line, plane curve and space curve can be processed.

● Auxiliary equipment, some necessary supporting parts of the index control machine tool, to ensure the operation of CNC machine tools, such as cooling, chip removal, lubrication, lighting, monitoring and so on. It includes hydraulic and pneumatic devices, chip evacuation devices, exchange tables, numerical control turrets, and numerically-controlled indexing heads, as well as tools and monitoring devices.

● Programming and other ancillary equipment can be used outside the machine for programming, storage and other parts.

Since MIT 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 has been used in hardware and software. , all have rapid development.

Machining Center

The machining center is a highly automated multi-function CNC machine with a magazine and automatic tool changer. After the work piece is clamped once on the machining center, more than two surfaces can be processed in a variety of processes, and there are multiple tool change or tool selection functions, thereby greatly improving production efficiency.

The machining center is divided into two categories of boring and turning according to its machining process. The number of control axes can be divided into three-axis, four-axis and five-axis machining centers.