The operation and monitoring of CNC machine tools are all completed in this CNC unit, which is the brain of CNC machine tools.
Compared with ordinary machine tools, CNC machine tools have the following characteristics:
High machining precision and stable machining quality;
It can carry out multi coordinate linkage and process parts with complex shapes;
When the processing parts are changed, the computer gong processing only needs to change the NC program, which can save the production preparation time;
The machine tool itself has high precision and rigidity. It can choose favorable processing amount and high productivity (generally 3 ~ 5 times of ordinary machine tool);
High degree of automation of machine tools can reduce labor intensity;
The requirements for the quality of operators are higher, and the technical requirements for maintenance personnel are higher.
CNC machine tools are generally composed of the following parts:
The main engine is the theme of CNC machine tools, including machine body, column, spindle, feed mechanism and other mechanical components. It is a mechanical part used to complete various cutting processes.
CNC device is the core of CNC machine tool, including hardware (printed circuit board, CRT display, key box, paper tape reader, etc.) and corresponding software, which is used to input digital part program, computer gong processing and complete input information storage, data transformation, interpolation calculation and Realization of various control functions.
The machine tool is composed of a CNC drive unit, a main shaft drive unit and a motor drive unit. Under the control of the numerical control device, he realizes the spindle and feed drive through the electric or electro-hydraulic servo system. When several feed linkage, positioning, straight line, plane curve and space curve processing can be completed.
Auxiliary device, some necessary matching parts of index control machine tool, to ensure the operation of CNC machine tool, such as cooling, chip removal, lubrication, lighting, monitoring, etc. It includes hydraulic and pneumatic devices, chip removal device, exchange table, CNC turntable and CNC dividing head, as well as cutting tools and monitoring and detecting devices.
Programming and other auxiliary equipment can be used to program and store parts outside the machine.
Since the first CNC machine tool was developed by Massachusetts Institute of technology in 1952, numerical control machine tool has been widely used in manufacturing industry, especially in automobile, aerospace and military industry. Numerical control technology has developed rapidly both in hardware and software.
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