基于三角测量在线检测闭环控制烧蚀系统, 以声光调Q YAG脉冲激光径向辐照方式进行青铜金刚石砂轮修整。根据砂轮表面的漫反射和成像情况, 选取柱面透镜作为接收透镜, 改进设计一套比较完善的接收光路系统, 对此激光烧蚀系统进行了标定。依照标定结果调整电路, 选取合理的激光和工艺参数进行砂轮修整试验。试验结果表明, 经激光修整后砂轮精度有了明显的提高。在此基础上研究了激光-机械复合精密修整技术, 即青铜金刚石砂轮通过激光修整后, 再辅以机械法整形。该方法使修整精度进一步得到提高, 同时使砂轮表面地形地貌得到了改善。

Based on triangulation method, the closed loop of the control system was used to control the output of the laser pulse. Acousto-optic Q-switched Nd∶YAG pulsed laser was employed to dress bronze-bonded diamond wheels in orthogonal direction. Diffuse and imaging situation of the wheel surface has been studied. Through comparative analysis, the cylindrical lens was selected, A set of fairly complete receive optical system was improved, and the laser ablation system was calibrated. According to the results of calibration, the circuit was adjusted, reasonable laser and technological parameters was selected to carry on the laser truing and dressing experiment for the wheel. The results show that accuracy was significantly improved. Based on those above, the technique of laser-machinery truing and dressing of bronze-bonded grinding wheel has been studied. Namely, the grinding wheel was trued and dressed by mechanical method after trued and dressed by laser. The accuracy was further improved, and the surface topography was improved too.