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激光宏观结构化金刚石砂轮磨削氧化铝工艺
李锶1,彭福远1,康忠雄1
湖南理工学院机械工程学院,岳阳 414006
摘要:
为了研究砂轮表面结构化对砂轮磨削性能的影响,利用脉冲激光对树脂结合剂金刚石砂轮进行了表面宏观结构化。采用6种不同类型的金刚石砂轮表面宏观结构进行了氧化铝的磨削实验,建立了激光宏观结构化金刚石砂轮的磨削力模型,比较了6种不同激光宏观结构化金刚石砂轮与非结构化砂轮在不同磨削参数下磨削力的差异,分析了砂轮制造后的表面形貌与结构化砂轮的磨损特性。实验结果表明,砂轮宏观结构化对磨削性能有很大影响,激光宏观结构化砂轮的磨削力可以减小2.5%~24.5%,砂轮结构化后的表面形貌出现石墨化现象;宏观结构化砂轮沟槽边缘磨损加剧,但沟槽磨损并没有明显加快宏观结构化砂轮的磨损。
关键词:  激光宏观结构化  激光烧蚀  氧化铝陶瓷  磨削力  形貌
DOI:10.12044/j.issn.1007-2330.2020.02.013
分类号:TG580.6
基金项目:湖南省教育厅科学研究项目(NO:16C0720)
Process Experimental of Laser Macro-structured Diamond Grinding Wheels for Alumina Grinding
LI Si1, PENG Fuyuan1, KANG Zhongxiong1
College of Mechanical Engineering, Hunan Institute of Science and Technology,Yueyang 414006
Abstract:
In order to study the effect of surface structuring on the grinding behavior of the grinding wheel,novel laser structuring method using pulsed laser was proposed and applied to produce certain macro patterns on the surface of resin bonded diamond grinding wheel.The grinding experimental of alumina ceramic was carried out by using six type different patterns of diamond grinding wheel surface.The grinding force model of laser macro-structured diamond grinding wheel was established.The grinding force between six different laser macro-structured diamond grinding wheel and non-structured was compared under different grinding parameters.The grinding wheel surface morphology after manufacturing and the wear behavior were analyzed.The experimental results showes that the type of surface pattern has a strong influence on the grinding results.The grinding force of laser macro-structured grinding wheels can be reduced by 2.5% to 24.5%.The graphitization phenomenon appeares on the surface morphology of the structured grinding wheel.The wear of the groove edge is aggravated. The groove wear doesn't reveal a significant increase in wear of the structured grinding wheel.
Key words:  Laser macro-structuring  Laser ablation  Alumina ceramic  Grinding force  Topography