激光技术2012，Vol.36Issue(4)：433-437,5.DOI:10.3969/j.issn.1001-3806.2012.04.001
激光在线修整青铜金刚石砂轮数值仿真与试验
Numerical simulation and experiment for on-line truing and dressing of bronze-bonded diamond grinding wheels with laser
摘要
Abstract
Based on both numerical simulation and experimental investigation, much research work has been done on online truing and dressing bronze-bonded diamond grinding wheel by acoustic-optic Q-switched YAC pulsed laser. A 3-D mathematical simulation model and a heat transfer model of single pulsed laser ablating the diamond abrasive was established by means of finite element method, where the process of diamond graphitization was taken into account. The removal depth of the diamond abrasive in different laser parameters (such as focal position, pulse width and laser power) was measured, and the relationship between them was analysed, which helped us to select optimal parameters. The results show that: the laser power, pulse width and the focal position are the direct effects of the removal depth of the diamond abrasive; it will increase along with the increase of laser power, and decrease along with the increase of pulse width and the focal position. The on-line grinding wheel dressing was achieved with closed-loop control, CCD and laser triangulation displacement measuring instrument which were used in control of ^-switch and the on-line monitoring of the circular run-out of the grinding wheel. After laser truing and dressing, the accuracy was further improved,the circular run-out error was reduced,and the surface topography was improved loo.关键词
激光技术/在线修整/数值仿真/青铜金刚石砂轮/激光参量Key words
laser technique/on-line truing and dressing/numerical simulation/bronze-bonded diamond grinding wheel/lager parameters分类
信息技术与安全科学引用本文复制引用
陈根余,陈冲,卜纯,贾天阳..激光在线修整青铜金刚石砂轮数值仿真与试验[J].激光技术,2012,36(4):433-437,5.基金项目
国家八六三高技术研究发展计划资助项目(2007AA042006) （2007AA042006）
国家“高档数控机床与基础制造装备”科技重大专项课题资助项目(2009ZX04007_021) （2009ZX04007_021）
