To investigate a new type of low stress precision cropping system,it is necessary to obtain the influence of the geometric parameters of slotted bar with different diameters on the stress concentration near the groove bottom.

To investigate a new type of low stress precision cropping system, it is necessary to obtain the influence of the three geometric parameters of the V shaped groove on the stress concentration near the groove bottom.

The rotary speed of eccentric blocks was adjusted by the frequency-converter to control the vibration amplitude and the exciting force to realize precision cropping.

Research on real-time synthetic monitoring technology for precision machining system;

Precision Machining Technology with Pre- compensation Based on laser Measuring;

Study on precision machining Al_2O_3 by 248nm KrF excimer laser;

The Control Method & System of the Precise Machining Driven by Pzt;

One of the basic principles of the laser measurement used in precision processing is studied, and a closedloop feedback control system of lasermeasured position of the machine worktable is produced, and the coordinate control illustrated diagram, suitable for controlling feed devices of many kinds of precision machines, is given.