High speed, precision, compound, intelligence and green are the general trends in the development of CNC machine tool technology, and gratifying achievements have been made in practicality and industrialization. Mainly manifested in:
1. Further expansion of machine tool compound technology. With the advancement of CNC machine tool technology, compound processing technology is becoming more and more mature, including milling-turning compounding, turning-milling compounding, turning-boring-drilling-gear processing compounding, turning-grinding compounding, forming compounding processing, special For compound processing, the precision and efficiency of compound processing are greatly improved. The concepts of "a machine tool is a processing plant" and "one-time installation, complete processing" are being accepted by more people, and the development of compound processing machine tools is showing a diversified trend.
2. There are new breakthroughs in the intelligent technology of CNC machine tools, which have been more reflected in the performance of the CNC system. Such as: automatic adjustment of interference and anti-collision function, the workpiece automatically exits the safe area after power failure, power-off protection function, processing parts detection and automatic compensation learning function, high-precision processing parts intelligent parameter selection function, automatic elimination of machine vibration during processing, etc. In the practical stage, intelligence has improved the function and quality of the machine tool.
3. The robot makes the flexible combination more efficient. The flexible combination of the robot and the host is widely used, which makes the flexible line more flexible, the function is further expanded, the flexible line is further shortened, and the efficiency is higher. Robots and machining centers, turning and milling compound machine tools, grinders, gear processing machine tools, tool grinders, electrical processing machine tools, sawing machines, stamping machine tools, laser processing machine tools, water cutting machine tools and other forms of flexible units and flexible production lines have begun to be applied.
4. New advances in precision machining technology. The machining accuracy of CNC metal cutting machine tools has been upgraded from the original silk level (0.01mm) to micron level (0.001mm), and some varieties have reached about 0.05μm. The micro-cutting and grinding of ultra-precision CNC machine tools can achieve a stable accuracy of about 0.05μm and a shape accuracy of about 0.01μm. The precision of special processing using optical, electrical, chemical and other energy sources can reach nanometer level (0.001μm). Through the optimization of machine tool structure design, super-finishing and precise assembly of machine tool parts, the use of high-precision full-closed-loop control and dynamic error compensation technologies such as temperature and vibration to improve the geometric accuracy of machine tool processing, reduce form and position errors, surface roughness, etc. , Thus entering the era of sub-micron and nano-level super finishing.
5. The performance of functional components continues to improve. Functional components continue to develop in the direction of high speed, high precision, high power and intelligence, and have achieved mature applications. All digital AC servo motors and driving devices, high-tech electric spindles, torque motors, linear motors, high-performance linear rolling components, high-precision spindle units and other functional components are popularized and applied, which greatly improves the technical level of CNC machine tools.
