中国机械工程

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磁力光整加工铝镁合金永磁极研究

张鹏;张桂香;梁伟;秦璞;姜林志   

  1. 山东理工大学机械工程学院,淄博,255049
  • 出版日期:2018-06-10 发布日期:2018-06-08
  • 基金资助:
    国家自然科学基金资助项目(51675316)
    National Natural Science Foundation of China (No. 51675316)

Research on Magnetic Abrasive Finishing Processes of  Aluminum-magnesium Alloy Permanent Magnet Poles

ZHANG Peng;ZHANG Guixiang;LIANG Wei;QIN Pu;JIANG Linzhi   

  1. School of Mechanical Engineering, Shandong University of Technology,Zibo,Shandong,255049
  • Online:2018-06-10 Published:2018-06-08
  • Supported by:
    National Natural Science Foundation of China (No. 51675316)

摘要: 以主轴改造后的XK7136C数控铣床为平台,以AZ31系镁合金与7075-T651铝合金为研究对象,通过理论计算与磁场仿真,设计出适用于加工铝镁合金结构材料平面的强永磁材料磁极,并采用雾化快凝球形磁性磨粒进行试验,以验证该种光整加工方法的可行性及球形磨粒性能。使用“米字槽”与“田字槽”两种磁极分别对两种材料进行研磨实验。实验结果表明:两种端面开槽方式均可防止磨料的局部堆积,保证磨料的流动性,并使端面磁通密度增大,磁场强度梯度增大,提高研磨效率。两种磁极所研磨表面粗糙度分别为0.126 μm和0.148 μm,端面拥有更大磁通密度的“田字槽”磁极前期研磨效率更佳。

关键词: 磁极设计, 磁场仿真, 磁力光整加工, 表面质量

Abstract: Based on the XK7136C CNC milling machine with spindle modification, the AZ31 series magnesium alloy and 7075-T651 aluminum alloy were used as the research objects.The theoretical calculation and magnetic field simulation were used to design the strong permanent magnet material for the machining of aluminum-magnesium alloy structural material magnetic poles, and the use of atomized fast-rolling spherical abrasive particles was tested to verify the feasibility of the finishing method and spherical abrasive performance.“Tian word slot” and “Mi word slot” magnetic poles were used to test the two kinds of materials respectively.The experimental results show that two kinds of end slotting methods may prevent the local accumulations of abrasives, ensure the abrasive flowability, and increase the magnetic flux density and improve the grinding efficiency.The surface roughness of the two poles are as 0.126 μm and 0.148 μm respectively.The end faces with a stronger magnetic flux density of the“ Tian word slot” magnetic pole are more efficient in the prophase polishing processes.

Key words: magnetic pole design, magnetic field simulation, magnetic abrasive finishing, surface quality

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