数控专业外文翻译..doc

数控机床的特点??? Characteristics of CNC machine tools CNC machine operation and monitoring of all completed in the numerical control unit, which is the brains of CNC machine tools. 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, generally only need to change the NC program, saving the production time to prepare; ?● high precision machine tool itself, rigidity, can choose the amount of benefit processing, production rate (usually as an ordinary machine 3 to 5 times); ● high degree of automation tools, can reduce labor intensity; ● the quality of the operators require a higher technical requirements on higher maintenance staff. ?CNC machine tools generally consists of the following components: ● host, he is the subject of CNC machine tools, including machine tools, 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 digital input part program, and complete the input information storage, data transformation, interpolation operations and achieve a variety of control functions. ● drive, he was the implementing agencies CNC drive components, including the spindle drive unit, feed unit, 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 several feed linkage, you can complete the position, line, plane curves and space curves processing. ● assist device, the index control machine tools necessary supporting components to ensure the operation of CNC machine tools, such as cooling, chip removal, lubrication, lighting, monitoring.