Ultra-precision woodworking machine tools are the most advanced woodworking manufacturing technology, and will also improve the machining accuracy of woodworking machine tools. Especially the application of ultra-precision machine tools to woodworking machines has changed the woodworking industry.

The main trend of CNC woodworking lathes has developed over the past 30 years. The development trend of woodworking lathes is diverse, including the trend of high precision, the trend of high-speed motion, the trend of multi-axis, the trend of high reliability, and the trend of multi-functional and complex. The trend of integration, the trend of reconfiguration, the trend of low energy consumption and environmental protection, and the trend of intelligence, but among all the trends, the trend that best reflects the development trend should be the trend of high precision and intelligence. High precision is the mainstream development direction of CNC woodworking machine tools, and the precision of ultra-precision machining is even higher than that of precision machining.

In fact, ultra-precision machining technology is very rich. For the related technologies involved in ultra-precision machining technology, the key cutting-edge research includes six aspects: woodworking machine tool design, moving parts, measurement analysis, technology, woodworking technology and application condition technology. Leading core technologies cover key structural precision and ultra-precision spindles, woodworking manufacturing technology, key structural components of precision and ultra-precision linear motion, woodworking technology, high-resolution motion drive technology, processing technology, key components of woodworking machine tools, component feature technology Resistant to external disturbances and high stability. Structure and woodworking manufacturing technology of fast linear motion, nested structure design of multi-axis woodworking machine tools, woodworking manufacturing technology of target parts woodworking machine tools.

The key technologies are:

In the process of developing the precision of woodworking lathes from micrometer to nanometer, there are three key technologies that are unavoidable. These three technologies are also the starting point of research on nano-precision woodworking lathes. One such technology is gearless bearing technology, which has hysteresis in many mechanical systems. Hysteresis not only seriously affects the motion positioning accuracy and repeatability, but also affects the high resolution of the motion. It also affects the machined shape and surface roughness of precision parts. The hydrostatic bearing technology can solve the mechanical hysteresis well and can homogenize the geometric errors. Widely used in ultra-precision woodworking machine tools. In the past ten years, hydrostatic technology has made great progress, and self-compensating feedback technology has become more mature. With the development of throttling technology for flow control, the stiffness of hydrostatic bearings has been greatly improved, and the hardness of materials processed by ultra-precision woodworking machinery has been continuously improved.

The other two key technologies are high-resolution drive technology and micro-vibration processing technology in mechanical systems. Nanoscale resolution has been the characteristic of ultra-precision woodworking machine tools in the past decade. At the same time, a large number of experimental studies have found that vibration signals of 10 nanometers exist in many mechanical actuators, causing interference to the execution and measurement of mechanical sensitivity, which is called microscale. Vibration, there is still a certain gap between the accuracy of domestic ultra-precision equipment and the accuracy of woodworking.

Conclusion

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