At present, the team will be optical precision positioning, automatic five axisdisplacement control,two high-speed laser scanning as a whole, the processing is successfully applied to diamond,metal, composite material. The team the next step will be based on a platform, the development of high precision, large stroke intelligenthigh speed laser plus system, domestic system quickly shorten the gap with the international advanced level.

Laser processing technology is an important part of advanced manufacturing technology, which plays an important role in the advancement of technology, the transformation of traditional industries, the modernization of national defense. In foreign countries, the laser processingtechnology is known as the "universal tool","the future of common processing method of the manufacturing system". In the laser processing is often needed cutting, punching, shock and other processing for complicated surface, but in the complex space curved surface of high precisionmachining process must realize the five axis linkage system help to complete. At present,foreign five axis laser processing system for the high precision of the strictrestrictions on exports ofour country, for the prevention of national defense project.The difficulty here lies in the realization of five axis linkage and synchronization control of mechanical motion system and laser triggering.

Ningbo Institute of material technology and engineering institute two level of advanced manufacturing Institute of laser and intelligent energy field manufacturing engineeringteam developed a five axis CNC system, and on this basis, completed the prototype of five axis laserprocessing system R & D, repeated positioning precision of the systemreaches 0.002mm, the overall accuracy for 0.03mm, range of motion: X axis: 0-300mm, Y axis: 0-300mm, Z axis: 0-250mm, A axis: -180 ° +180 °, B axis: -360 ° -+360 degrees, the maximum power 1.2kW, maximum velocity translational axis 0.5m/s, axis of rotation speed up to 12rad/s. The research isbased on the normal PC as the foundation, the open Linux operating system, combined with RTAI real time extension, the development of five axis CNC system with high accuracy; in addition, the system adopts real-time bus structure, the EtherCAT real-time network communication protocol is introduced, replacing the traditional domestic open numerical control system based on motion control card. The control scheme of interpolation and motion planning, improve the system scalability and stability.

In addition, the team will be high power picosecond laser into scanning vibration mirror, laserprocessing speed of 0-12 meters per second. The scanning speed is more than 5 meters per second is required for high frequency laser processing, but the scanning vibrating environmentlimited working range, combined with a largerange of working table, realizes the combination ofprecision five axis linkage large range and high precision laser machining. The technology platform was built,undertake the processing task is complex and difficult to machine materials laid the foundation for the team.

The team also uses the independent research and development of equipment with thefunction of path planning and processing of CAM software UG, the complex shapeespecially irregular surface processing, the future will be used for processing of special materials for aircraft engine. Related work reported in this AmericanASME/MSEC2013 annual meeting; using special processing of the platform in this year's China Mechanical Engineering Society annual meeting reported special processing.