Ultraprecision Diamond Machining Of Functional Microstructures

Under the drive of military requirements, aeronautic technology and the development of photoelectric products, functional surface of microstructure, whose pattern with high aspect ratio and certain geometric properties, possesses specific functions as transform mechanical, physical, and chemical characteristics of components, has attracted world-wide attention and research. Machining of microstructure functional surface with high precision, high efficiency and low cost plays a very important role in field of manufacturing technology in 21 century.Firstly, the ultraprecision machining with diamond tool of microstructure functional surface is systemically illustrated from aspects of actual application, status quo and development trend. Moreover, the effect factors of diamond properties on pointed tools that sharpened by microstructure ultraprecision machining technology are analyzed. The factors influence on the ultraprecision machining of microstructure with diamond tools are theoretically discussed combining experimental condition.Secondly, the sharpening and detection experiments of the monocrystal diamond pointed tools are carried through. Then the coaxial modulating sine-wave and saw-tooth wave microstructure surface of LY12 and PC materials, which are machined with the sharpened diamond pointed tools based on the ultra-precision platform typed machine. The wear experiments of diamond pointed tools in the process of ultraprecision machining microstructure with diamond tools are carried out simultaneously.Finally, based on the rational combination of theoretical hypothesis and experiment verification, the sharpening technology of diamond pointed tool is analyzed, and the principle and effect factors of ultraprecision machining the coaxial modulating sine wave and saw-tooth wave microstructure with diamond tools are comparatively researched. Then the fractal theory is adopted to character and analyze the microstructure functional surface, and the wear mechanism of ultraprecision machining microstructure with diamond pointed tools is discussed.This paper gives the conclusions about the sharpening technology of monocrystal diamond pointed tools, the ultraprecision machining technology of coaxial modulating microstructure with diamond tools and the wear mechanism of diamond tools from theoretical hypothesis and experiment verification. And these conclusions serve as practical experience for improving the technology of ultra-precision machining microstructure functional surface with diamond tools.