Conditioning of vitrified and resin bond CBN grinding wheels using a picosecond laser
Conditioning of vitrified and resin bond CBN grinding wheels using a picosecond laser
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DOI：
10.24200/sci.2017.4307
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发表时间：
2017-08
期刊：
影响因子：
1.4
通讯作者：
Ali Zahedi;B. Azarhoushang;J. Akbari
中科院分区：
文献类型：
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作者：
Ali Zahedi;B. Azarhoushang;J. Akbari
激光烧蚀是一种新型的非机械砂轮制备方法，用于优化超硬磨料工具的处理成本。在这项研究中，皮秒激光辐射对陶瓷和树脂结合剂 CBN 超级磨料砂轮表面的热效应进行了分析和实验研究。该分析方法旨在找到选择性烧蚀切割颗粒和粘结材料的阈值工艺参数。皮秒 Yb:YAG 激光装置与外圆磨床集成，便于对安装在磨削主轴上的砂轮进行处理。已经表明，材料烧蚀的程度由激光辐射引起的最高表面温度限定，而最高表面温度又由激光脉冲能量限定。还建议，激光热效应的深度由激光扫描仪相对于车轮表面的相对速度决定
Laser ablation is a novel non-mechanical wheel preparation method for optimizing thetreatment costs of superabrasive tools. In this study, the thermal effects of picosecond laser radiationon vitrified and resin bond CBN superabrasive grinding wheel surfaces was analytically andexperimentally investigated. The analytical approach is intended to find threshold process parametersfor selective ablation of cutting grains and bond material. A picosecond Yb:YAG laser device wasintegrated with a cylindrical grinding machine which facilitates the treatment of grinding wheel as itis mounted on the grinding spindle. It has been shown that, the extent of material ablation is definedby the maximum surface temperature induced by the laser radiation which is in turn defined by thelaser pulse energy. It is also suggested that, the depth of laser thermal effects is governed by therelative speed of the laser scanner with respect to the wheel surface