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渐开线磁极组研磨双面的相对角度试验

刘杰 焦安源 薄啟帆 丁云龙 陈燕

刘杰, 焦安源, 薄啟帆, 丁云龙, 陈燕. 渐开线磁极组研磨双面的相对角度试验[J]. 金刚石与磨料磨具工程, 2024, 44(5): 685-694. doi: 10.13394/j.cnki.jgszz.2023.0185
引用本文: 刘杰, 焦安源, 薄啟帆, 丁云龙, 陈燕. 渐开线磁极组研磨双面的相对角度试验[J]. 金刚石与磨料磨具工程, 2024, 44(5): 685-694. doi: 10.13394/j.cnki.jgszz.2023.0185
LIU Jie, JIAO Anyuan, BO Qifan, DING Yunlong, CHEN Yan. Experiments on relative angles of grinding two sides of involute pole groups[J]. Diamond & Abrasives Engineering, 2024, 44(5): 685-694. doi: 10.13394/j.cnki.jgszz.2023.0185
Citation: LIU Jie, JIAO Anyuan, BO Qifan, DING Yunlong, CHEN Yan. Experiments on relative angles of grinding two sides of involute pole groups[J]. Diamond & Abrasives Engineering, 2024, 44(5): 685-694. doi: 10.13394/j.cnki.jgszz.2023.0185

渐开线磁极组研磨双面的相对角度试验

doi: 10.13394/j.cnki.jgszz.2023.0185
基金项目: 辽宁省教育厅项目(LJKZ0295);辽宁省自然科学基金项目(2019-ZD-0029)。
详细信息
    作者简介:

    焦安源,男,1978年生,博士,教授、硕士研究生导师。主要研究方向:磁粒研磨加工、精密铣削加工及相关自动化设备开发。E-mail:jay@ustl.edu.cn

  • 中图分类号: TG176

Experiments on relative angles of grinding two sides of involute pole groups

  • 摘要: 为解决钛合金TC4表面的凸起、划痕和微裂纹等缺陷问题,提出一种对立磁极组产生相对角度的双面磁粒研磨方式,从而提高其研磨效率。在双面旋转研磨试验的基础上,对磁性磨粒进行受力分析,通过渐开线排布磁石的设计,对比该磁极下磁感应强度的变化,进而分析对立磁极组产生相对角度的磁场梯度对表面质量的影响规律,最后进行表面粗糙度变化检测,以及对研磨前后的工件表面微观形貌检测。结果表明:采用渐开线排布磁石,覆盖面积相对较大并且磁场分布均匀;相对角度$ {10}{\text{°}} $双面研磨时,磁场梯度变化较大,有利于磁性磨粒的及时翻滚。工件正面的表面粗糙度Ra由初始的0.458 μm降至0.116 μm,表面高度差由原始的43.3 μm降至7.8 μm;工件反面的表面粗糙度Ra由初始的0.434 μm降至0.111 μm,表面高度差由原始的44.2 μm降至8.4 μm。通过渐开线排布磁石产生相对角度的研磨加工,工件表面的凸起、划痕、沟壑和微裂纹等缺陷得到明显改善,工件双面同时研磨,提高了研磨效率。

     

  • 图  1  双面研磨加工原理

    Figure  1.  Principle of double-sided finishing

    图  2  单个磁性磨粒受力分析

    Figure  2.  Force analysis of single magnetic abrasive

    图  3  渐开线示意图

    Figure  3.  Schematic diagram of involute

    图  4  渐开线排布磁石示意图

    Figure  4.  Schematic diagram of involute magnet arrangement

    图  5  磁石排布仿真对比

    Figure  5.  Comparison of simulation of magnet arrangement

    图  6  两侧磁极组旋转角度示意图

    Figure  6.  Schematic diagram of rotation angle of magnetic pole group on both sides

    图  7  磁极组不同相对角度和磁场梯度变化

    Figure  7.  Variation of magnetic field gradient with different relative angles and magnetic pole group

    图  8  试验装置实物图

    Figure  8.  Physical diagram of the test setup

    图  9  表面粗糙度随时间的变化曲线

    Figure  9.  Curve of surface roughness with time

    图  10  工件正面研磨前后形貌对比和高度差对比图

    Figure  10.  Comparison of morphology and height difference before and after front grinding of workpiece

    图  11  工件反面研磨前后形貌对比和高度差对比图

    Figure  11.  Comparison of morphology and height difference before and after back grinding of workpiece

    表  1  磁场模拟仿真参数

    Table  1.   Parameters of magnetic field simulation

    参数名称数值或类型
    磁极组Ⅰ转速 n1 / (r·min−1)600
    磁极组Ⅱ转速 n2 / (r·min−1)600
    磁极组转向顺时针
    两侧磁极组距离 s / mm4
    初始相对角度 λ / (°)10
    下载: 导出CSV

    表  2  磁场模拟仿真参数

    Table  2.   Parameters of magnetic field simulation

    参数名称数值或类型
    磁极组Ⅰ转速 n1 / (r·min−1)600
    磁极组Ⅱ转速 n2 / (r·min−1)600
    磁极组转向顺时针
    两侧磁极组距离 s / mm4
    参考线长度 a / mm40
    初始相对角度 λ / (°)0、10、20
    下载: 导出CSV

    表  3  试验条件

    Table  3.   Test conditions

    参数名称数值或类型
    工件材料钛合金TC4板
    工件尺寸 / mm100.0 × 100.0 × 0.8
    加工间隙 l / mm2
    研磨液劳力恩SR-9911水基式研磨液6 mL
    磁性磨粒Fe与Al2O3混合烧结磨料,粒径为150 μm
    磁极组Ⅰ转速 n1 / (r·min−1)600
    磁极组Ⅱ转速 n2 / (r·min−1)600
    磁极组转向顺时针
    初始相对角度 λ / (°)0、10、20
    磨粒填充量 Q / g30
    加工时间 t / min30
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-09-03
  • 修回日期:  2023-11-21
  • 录用日期:  2023-11-28
  • 刊出日期:  2024-10-01

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