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Based on the regularities of motion of the rigid polyurethane rubber ultrasonic vibration assisted grinding, combined with the kinematic analysis of the general theory and experiments. This paper analyses the variation in position, velocity and acceleration during the manufacture of single abrasive grinding with and without ultrasonic vibration. The impact of rigid polyurethane rubber micro V - groove process introduced by the ultrasonic vibration is explored to verify the feasibility of the ultrasonic vibration assisted grinding of micro-precision machining of hard polyurethane rubber material.

A series Znl-xMgxO (x=0∼0.16) films grown on Si (100) substrate were prepared by RF magnetron sputtering and annealed at different temperature. The UV emission peaks of free exciton (and assisted phonon replicas) and electron-hole plasma (E-H) are found in the photoluminescence (PL) from the films, where the E-H has a five-time super-linear enhanced lasing effect. The blue shift of the UV peaks in the photoluminescence spectra is found to be associated with increasing Mg content in Znl-xMgxO films, and the peaks intensity is also reinforced significantly as increasing the annealing temperature. Green emission due to the oxygen vacancy was very weak, indicating a well stoichiometry was kept in the films. The minimum lasing threshold of the samples is 35kW/cm2, corresponding to the 100nm hexagonal microstructure.