Thermal modelling and experimental evaluation of laser-assisted dressing of superabrasive grinding wheels
Thermal modelling and experimental evaluation of laser-assisted dressing of superabrasive grinding wheels
复制标题
超硬磨料砂轮激光辅助修整的热建模与实验评估
DOI：
10.1243/09544054jem713
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Y. Shin
中科院分区：
文献类型：
--
作者：
Yinggang Tian;Y. Shin
摘要激光辅助修整（LAD）技术可以有效地制备超硬磨料砂轮，显著降低修整力和梳妆台磨损。本文建立了超硬磨料砂轮LAD过程的瞬态三维传热模型，计算了多孔非均匀砂轮的有效热物性，并将其应用于热模型。温度测量进行了红外摄像机和测量和预测的温度之间的良好协议显示本模型的验证LAD的砂轮或，一般来说，激光辅助加工的复合材料。为了研究激光辅助修整对超硬磨料砂轮磨削性能的影响，分别采用常规修整和激光辅助修整方法制备了CBN砂轮，进行了磨削试验。磨削试验表明，在适当的条件下采用液滴辅助磨削可以提高CBN砂轮的磨削性能。
Abstract Laser-assisted dressing (LAD) has been proposed to prepare efficiently superabrasive grinding wheels by significantly reducing dressing forces and dresser wear. In this paper, a transient, three-dimensional heat transfer model is presented for LAD of superabrasive grinding wheels, where the effective thermophysical properties of the porous heterogeneous wheel are calculated and applied to the thermal model. Temperature measurements are conducted with an infrared camera and the excellent agreement between the measured and predicted temperatures show the validation of the present model for LAD of grinding wheels or, generally, laser-assisted machining of composite materials. To evaluate the influence of LAD on superabrasive wheels, grinding tests were carried out using a CBN wheel prepared by conventional and laser-assisted dressing respectively. The grinding tests show that LAD under proper conditions could improve the performance of CBN wheels.