杨子彧,焦安源,丁浩东,韩冰.渐开线槽磁极改进磁粒研磨毛刺效果的试验研究[J].表面技术,2023,52(4):329-337.
YANG Zi-yu,JIAO An-yuan,DING Hao-dong,HAN Bing.Experimental Study on Improving Grinding Burrs Effect by Magnetic Abrasive Finishing Using Magnetic Pole with Involute Grooves[J].Surface Technology,2023,52(4):329-337 |
| 渐开线槽磁极改进磁粒研磨毛刺效果的试验研究 |
| Experimental Study on Improving Grinding Burrs Effect by Magnetic Abrasive Finishing Using Magnetic Pole with Involute Grooves |
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| DOI：10.16490/j.cnki.issn.1001-3660.2023.04.029 |
| 中文关键词: 磁粒研磨 磁极 镍基高温合金 孔 毛刺去除 渐开线槽 |
| 英文关键词:magnetic abrasive finishing magnetic pole nickel-based superalloy hole burr removal involute grooves |
| 基金项目:辽宁省教育厅项目(LJKZ0295);辽宁省自然科学基金(2019–ZD–0029) |
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| Author | Institution |
| YANG Zi-yu | School of Mechanical Engineering and Automation,Liaoning Anshan 114051, China |
| JIAO An-yuan | School of Applied Technology, University of Science and Technology Liaoning, Liaoning Anshan 114051, China |
| DING Hao-dong | School of Mechanical Engineering and Automation,Liaoning Anshan 114051, China |
| HAN Bing | School of Applied Technology, University of Science and Technology Liaoning, Liaoning Anshan 114051, China |
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| 中文摘要: |
| 目的 改善传统磁粒研磨去除毛刺时磁感应强度变化率小、磨粒飞溅损耗严重等问题，设计带渐开线槽的磁极，通过优化磁场分布和逆渐开线展开转动的方式提高毛刺去除的效率和质量。方法 基于渐开线原理，设计不同基圆直径的磁极沟槽，仿真了磁感应强度云图及磁感应强度曲线，并与传统磁极进行平面研磨对比试验，通过综合分析优选磁极槽类型。对镍基高温合金GH3128螺旋铣孔板开展磁粒研磨孔切出毛刺的试验研究，分析主轴转速、磨粒填充量和磨粒粒径对孔缘毛刺去除的影响，得到渐开线槽磁极磁粒研磨孔切出毛刺的较佳工艺参数方案。结果 使用基圆直径为8 mm的渐开线槽磁极研磨平面时，其有效研磨面积更大，在主轴转速为1 600 r/min、磁性磨粒平均粒径为250 μm、进给速度为0.05 mm/s、磁性磨粒填充量为30 g、加工间隙为2 mm的工艺条件下研磨镍基高温合金GH3128孔板18 min后，孔切出毛刺平均高度由原始的29.6 μm降至10.2 μm，毛刺的平均宽度从原始的288.6 μm降至169.4 μm。结论 带渐开线槽的磁极改善了磁感应强度变化梯度，抑制了磁性磨粒的飞溅损耗，加速了磨粒切削刃的更新，使研磨效率和研磨均匀性都得到提高。此外，该加工方案可为其他类型毛刺的去除提供参考。 |
| 英文摘要: |
| There are many deficiencies for burrs removal in the traditional method by magnetic abrasive finishing, such as the small change rate of magnetic induction intensity in the grinding area, the splash and serious loss of magnetic abrasives. The work aims to design the magnetic pole of involute groove based on the involute principle, optimize the magnetic field distribution, and rotate the magnetic pole against the involute expansion direction, to improve the efficiency and quality of burrs removal. The grinding area of the involute groove pole was compared with that of the traditional unslotted pole. The effective area of the unslotted pole accounted for about 60.7%, and the effective area of the involute groove pole accounted for more than 90%. Magnetic field simulation of magnetic poles with involute groove for three different base circle diameters:4, 8 and 24 mm was carried out. A radial reference line with length of 50 mm was drawn at 2 mm above the magnetic pole model, and the variation law of magnetic induction intensity was analyzed and compared. Compared with other magnetic poles, the magnetic field distribution of the involute groove pole with a base circle of 8 mm was more uniform and the magnetic induction intensity gradient changed more greatly. Therefore, the magnetic pole of this specification was selected for subsequent experiments. Using response surface method (RSM), an experimental study on the burrs removal by magnetic abrasive finishing on the helical-milling holes of nickel-based superalloy GH3128 plate was carried out. The effects of spindle speed, abrasives filling amount and average abrasives size on the finishing effect were analyzed, and the optimum combination of process parameters were selected. It was verified by experiments that the average height of the cutting burrs decreased from the original 29.6 μm to 10.2 μm, and the average width of the burrs decreased from the original 288.6 μm to 169.4 μm after 18 min grinding for holes in nickel-based superalloy GH3128 plate by involute groove pole with base circle diameter of 8 mm at spindle speed of 1 600 r/min, average abrasives size of 250 μm, feed speed of 0.05 mm/s, filling amount of magnetic abrasives of 30 g and machining gap of 2 mm. The results show that the magnetic pole with involute groove can improve the change rate of magnetic induction intensity, suppresses the splash loss of magnetic abrasives, accelerate the cutting edge renewal of abrasives, and improve the grinding efficiency and uniformity. In addition, the machining plan can provide reference for the removal of other types of burrs. |
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