声光调Q YAG脉冲激光修锐和整形青铜金刚石砂轮  

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

作　　者：陈根余[1] 李力钧[1] 马宏路[1] 刘礼[1] 柳士江[1] 谢小柱[1] 

机构地区：[1]湖南大学激光研究所,长沙410082

出　　处：《机械工程学报》2005年第4期174-179,共6页Journal of Mechanical Engineering

基　　金：国家自然科学基金(50005005)湖南省重点科技攻关基金(04GK2004)资助项目

摘　　要：采用声光调Q钇铝石榴石(Yttriumaluminumgarnet,YAG)脉冲激光径向辐照,修锐和整形青铜金刚石砂轮。通过建立传热学数学模型和数值计算以及激光单脉冲烧蚀试验,分析了修锐和整形机理,找到了合理的修锐和整形的激光参数与工艺参数。设计和研发了一套在线检测闭环控制激光烧蚀系统,利用该系统控制激光烧蚀过程,进行了青铜金刚石砂轮修整,得到了较高的整形精度和良好的地形地貌,并且实现了一道工序同时整形与修锐。通过磨削对比试验分析了修整效果。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.

关 键 词：激光修锐和整形 金刚石砂轮 精度控制 传热计算 声光调QYAG脉冲激光 

分 类 号：TG442[金属学及工艺—焊接]