中文摘要：

基于激光与物质的相互作用,针对声光调QYAG脉冲激光修整青铜金刚石砂轮开展研究。建立了单脉冲激光烧蚀青铜和金刚石温度场的有限元模型,模拟了不同激光功率密度作用下青铜和金刚石的温度分布。借助温度场云图得到了可供修整试验参考的激光参数：适用于修锐的脉冲激光功率密度范围为1.66×107~7.5×107W/cm2;适用于整形的脉冲激光功率密度范围为9.95×107~3.52×108W/cm2,并从中选取典型参数进行修整试验,获得了良好的砂轮表面形貌。在仿真和试验的基础上,进一步分析了脉冲激光修整青铜金刚石砂轮的机理。

英文摘要：

Based on interaction between laser and matter,the research on truing and dressing bronze-bonded diamond grinding wheel by acoustic-optic Q-switched YAG pulsed laser is carried out.Simulation models of single pulsed laser ablating bronze and diamond temperature field are established by finite element method,which shows the temperature distribution of bronze and diamond under different laser power densities.Reasonable laser parameters are obtained from the temperature distribution contours： the pulsed laser power density ranging of 1.66×107~7.5×107 W/cm2 is suitable for dressing;the value ranging of 9.95×107~3.52×108 W/cm2 is suitable for truing,which can be used as reference values for practical dressing and truing experiment.Typical parameters are applied to actual truing and dressing experiment,and the surface topography of the grinding wheel becomes favorable.Through simulation and experiment,the mechanism of pulsed laser truing and dressing bronze-bond and diamond grinding wheel is further analyzed.