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LASER TRUING AND DRESSING OF BRONZE-BONDED DIAMOND GRINDING WHEELS BY A Q-SWITCHED YAG PULSE LASER

Chen Genyu Li Lijun Ma Honglu Liu Li Liu Shijiang Xie Xiaozhu (Laser Institute, Hunan University, Changsha 410082)  
Truing and dressing of bronze-bonded diamond grinding wheels by acoustic-optic Q-switched YAG pulse laser in the radial orientation is studied. The mechanism of truing and dressing is analyzed and the reasonable parameters of truing and dressing are found by the mathematical modei and the single laser pulse ablation experiment. An online workpieces position measuring and closed loop control system are developed. Based on this system, ideal precision and good wheels' surface topography of truing and dressing have been obtained. Especially, truing and dressing can be carried out at the same procedure compared with the conventional methods which grinding wheels need to be dressed after truing. And then the effects of dressing and truing have been analyzed by the grind- ing contrast experiments.
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