周传强,韩冰,肖春芳,陈燕,刘新龙.磁性磨粒辅助磁针磁力研磨的应用研究[J].表面技术,2019,48(3):275-282.
ZHOU Chuan-qiang,HAN Bing,XIAO Chun-fang,CHEN Yan,LIU Xin-long.Application of Magnetic Abrasive Particle Aided Magnetic Needles Grinding[J].Surface Technology,2019,48(3):275-282 |
| 磁性磨粒辅助磁针磁力研磨的应用研究 |
| Application of Magnetic Abrasive Particle Aided Magnetic Needles Grinding |
| 投稿时间：2018-07-14 修订日期：2019-03-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.03.037 |
| 中文关键词: 电磁研磨 混合磨料 微小复杂工件 表面质量 微小沟槽 |
| 英文关键词:electromagnetic grinding mixed abrasive small and complicated workpiece surface quality micro groove |
| 基金项目:国家自然科学基金项目（51105187）；湖南省自然科学基金项目（2017JJ5056）；辽宁省教育厅重点项目（2017LNZD02）；辽宁科技大学研究生教育改革与科技创新创业项目（LKDYC201709） |
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| Author | Institution |
| ZHOU Chuan-qiang | 1.School of Mechanical Engineering & Automation, University of Science and Technology Liaoning, Anshan 114051, China |
| HAN Bing | 1.School of Mechanical Engineering & Automation, University of Science and Technology Liaoning, Anshan 114051, China |
| XIAO Chun-fang | 2.Changsha Aeronautical Vocational and Technical College, Changsha 410124, China |
| CHEN Yan | 1.School of Mechanical Engineering & Automation, University of Science and Technology Liaoning, Anshan 114051, China |
| LIU Xin-long | 1.School of Mechanical Engineering & Automation, University of Science and Technology Liaoning, Anshan 114051, China |
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| 中文摘要: |
| 目的 解决磁针磁力研磨工艺中磁针对工件表面碰撞损伤及存在研磨盲区的问题。方法 在磁针中加入磁性磨粒增加磁针束的柔性，同时磁针为磁性磨粒提供研磨压力和切削力。将三相正弦交流电接入定子线圈，利用交流电的相位差产生旋转磁场，驱动混合磨料对微小复杂工件进行研磨。在混合磨料总质量不变的条件下，依次采用磁针、磁性磨粒和不同质量混合比的混合磨料进行对比试验。结果 相较于单一磨料，使用混合磨料加工40 min后的工件表面形貌较好，表面粗糙度值下降幅度大，且有较大的材料去除量。当磁针与磁性磨粒的质量混合比为1∶2时，加工后的工件表面形貌最佳，无明显加工纹理和磁针碰撞痕迹，工件表面粗糙度值由原始的1.0 μm下降到0.54 μm左右，材料去除量为2.8 mg左右，微小沟槽内无研磨盲区。结论 在电磁研磨工艺中，使用磁针和磁性磨粒质量比为1∶2的混合磨料可提高研磨效果，避免磁针的碰撞对工件表面造成损伤，磁针可将磁性磨粒挤入工件微小沟槽，无研磨盲区。 |
| 英文摘要: |
| The work aims to solve the problems of collision damage and blind sector in magnetic needle magnetic grinding process. Magnetic abrasive particles were added to increase the flexibility of the magnetic needles. At the same time, the magnetic needle provided grinding pressure and cutting force for the magnetic abrasive particles. The three-phase sinusoidal alternating current was connected to the stator coil, and the phase difference of the alternating current was used to generate a rotating magnetic field to drive the mixed abrasive to grind the tiny and complicated workpieces. Under the condition that the total mass of the mixed abrasive was unchanged, the magnetic needles, the magnetic abrasive particles and the mixed abrasive with different mass mixing ratios were sequentially used to carry out comparative experiments. Compared with single abrasive, the workpiece surface morphology after 40 min of processing with mixed abrasive was better. The surface roughness value decreased greatly, and there was a larger amount of material removed. When the mass mixing ratio of the magnetic needle and the magnetic abrasive particles was 1∶2, the surface morphology of the processed workpiece was the best, and there was no obvious processing texture or magnetic needle collision trace. The surface roughness of the workpiece decreased from the original Ra 1.0 μm to Ra 0.54 μm. The material removal amount was about 2.8 mg. There was no grinding dead angle in the micro groove. In the electromagnetic grinding process, the use of a mixed abrasive of magnetic needles and magnetic abrasive particles with a mass mixing ratio of 1∶2 can improve the grinding effect and prevent the surface of the workpiece from being damaged by the collision of the magnetic needles. The magnetic needle can squeeze magnetic abrasive particles into narrow grooves of the workpiece without grinding blind areas. |
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