As the core key components for information perception in high-end equipment in the fields of national defense security, aerospace, etc., free-form surface components of functional materials have extremely strict requirements for service performance. Due to the complex surface shape of functional materials and the difficulty in processing the materials, the single ultra-precision machining technology has insufficient capabilities in surface shape accuracy and surface integrity control, resulting in the problem that component functions are defective or even completely failed, which has always been unable to be effectively solved. The gap in the research and equipment of ultra-precision machining technology for free-form surface components of functional materials has become a "stuck neck" problem that seriously restricts the development of high-end equipment in China.

    The GF series products launched by our institute use precision control technologies such as thermal error compensation and closed-loop control feedback. By developing key motion components such as hydrostatic main shafts, hydrostatic direct-drive turntables, linear motors + hydrostatic guide rails, etc., the machine tools are ensured to have sub-micron-level positioning accuracy and stability. Combined with flexible waveguide belt sound transmission technology, a high-frequency vibration cutting device with precisely controllable trajectories is developed to break through the bottleneck of ultra-precision cutting processing methods for mesoscopic scale array units, realizing ultra-precision free-form surface and high-frequency ultrasonic composite processing. At the same time, by studying the relationship between process parameters and machining accuracy of array functional free-form surfaces with different profiles and topological structures, establishing a mathematical model of nano-precision cutting machining, and proposing a new forming mechanism of ultra-precision composite machining for micro-structured functional material surfaces, a complete set of ultra-precision composite cutting processing technology for micro-structured functional material surfaces is formed.