At present, in the Pearl River Delta Dongguan region, CNC machining machine on the bed is very common. It is a machine tool with automatic program control system. To understand the CNC machining system structure principle, in the CNC machining process, can logically deal with the control code or other symbols and instructions of the program, and its decoding, so that the machine action and processing mechanical parts, collectively referred to as CNC machining.
The structure of CNC machine tool is as follows
- Main machine, which is the theme of CNC machine tools, including machine body, column, spindle, feed mechanism and other mechanical parts. He is used to complete a variety of cutting precision parts processing.
- Numerical control device is the core of CNC machine tool, including hardware and corresponding software, which is used to input digital part program, complete input information storage, data transformation, interpolation operation and realize various control functions.
- Driving device, which is the driving part of CNC machine tool actuator, including spindle driving unit, feed unit, spindle motor and feed motor. 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, can complete the positioning, straight line, plane curve and space curve processing.
- Auxiliary device refers to some necessary supporting parts of CNC machine tool to ensure the operation of CNC machine tool, such as cooling, chip removal, lubrication, lighting, monitoring, etc. It includes hydraulic and pneumatic device, chip removal device, exchange table, numerical control turntable, numerical control dividing head, cutting tool, monitoring and detection device, etc.
- Programming and other auxiliary equipment, which can be used to program and store CNC parts outside the machine.
The above is the structure of CNC processing. In the machining industry, precision CNC processing greatly improves production efficiency. Its main advantages are as follows:
① It can ensure the accuracy and surface roughness of the workpiece to be processed;
② It can shorten the processing route, reduce the empty travel time and improve the processing efficiency;
③ The workload of numerical calculation should be simplified as much as possible, and the machining program should be simplified;
④ For some repeated programs, subroutines should be used.
ken.tang @ chengcg.com
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