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Structure of CNC machine tools

DATE:2010-08-21 09:03SOURCE:CNC WIKIPEDIA Author:admin CLICK:
CNC machine tools Is short for digital control machine tools, is a process control system with automated machine tools. The control system can deal logically with the control codes or other symbols, the procedure instructions, and its decod

CNC machine tools
Is short for digital control machine tools, is a process control system with automated machine tools. The control system can deal logically with the control codes or other symbols, the procedure instructions, and its decoding, so that machine motion and processing parts of the control unit, CNC machine operation and monitoring all completed in the numerical control unit, it CNC machine tool is the brain. Compared with the general machine tools, CNC machine tools has the following characteristics:


● high precision, stable processing quality;
● can be multi-axis linkage, can process complex shape parts;
● processing part changes, usually only need to change the NC program can save production time to prepare;
● high precision machine tool itself, rigidity, can choose a favorable amount of processing, production rate (usually for general machine 3 to 5 times);


● high degree of automation tools, can reduce labor intensity;
● the quality requirements of the operator high technical requirements of the higher maintenance personnel.
CNC machine tools generally consists of the following components:
● host, he is the subject of CNC machine tools, including the machine body, column, spindle, feed mechanism and other mechanical parts. He is used to complete a variety of machining mechanical parts.


● CNC equipment, CNC machine tools is the core, including the hardware (printed circuit boards, CRT monitors, key boxes, paper tape reader, etc.) and the corresponding software, for entering the digital part program, and complete input information storage, data transformation, interpolation operations and to achieve a variety of control functions.


● drive, he was the implementing agencies of the drive CNC machine tool components, including spindle drive unit, feed unit, the spindle motor and feed motor. He was under the control of the NC device electrical or electro-hydraulic servo system to achieve through the spindle and feed drive. When the number entered to the linkage, you can complete the orientation, linear, planar curves and space curves processing.


● assist device, index-controlled machine tools supporting some of the necessary components to ensure the operation of CNC machine tools, such as cooling, chip removal, lubrication, lighting, monitoring. It consists of hydraulic and pneumatic devices, chip removal device, pallet, NC rotary table and CNC dividing head, including tools and monitoring detection devices.


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

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