袁伟杰,邓日涛,杨振涛,尹韶辉.应用弹性砂轮对铝合金镜面磨削工艺研究[J].表面技术,2018,47(7):21-27.
YUAN Wei-jie,DENG Ri-tao,YANG Zhen-tao,YIN Shao-hui.Mirror Grinding Process for Aluminum Alloy Using Elastic Grinding Wheel[J].Surface Technology,2018,47(7):21-27 |
| 应用弹性砂轮对铝合金镜面磨削工艺研究 |
| Mirror Grinding Process for Aluminum Alloy Using Elastic Grinding Wheel |
| 投稿时间：2018-02-15 修订日期：2018-07-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.07.004 |
| 中文关键词: 弹性砂轮 铝合金磨削 正交实验 表面粗糙度 综合优化 去除率 |
| 英文关键词:elastic grinding wheel aluminum alloy grinding orthogonal experiment surface roughness comprehensive optimization removal rate |
| 基金项目:国家自然科学基金项目（51675171） |
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| Author | Institution |
| YUAN Wei-jie | School of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China |
| DENG Ri-tao | School of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China |
| YANG Zhen-tao | Hunan Changbudao Optical Technology Co., Ltd, Changsha 410202, China |
| YIN Shao-hui | School of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China |
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| 中文摘要: |
| 目的 解决铝合金手机外壳传统抛光工艺中存在的抛光效率低等问题。方法 采用聚氨酯弹性砂轮对6061铝合金进行了磨削加工，使用正交试验研究了磨料粒度、进给速度、切削深度、砂轮线速度对加工表面粗糙度及材料去除率的影响。试验中使用折线走刀方式进行加工，可减轻磨料分布不均带来的影响。使用白光干涉仪测量了加工后表面的粗糙度，通过计算单位时间内工件的质量变化得出了去除率，并通过对结果的综合优化得出了最优工艺参数。结果 在选取的16组磨削工艺参数中，可获得的最低表面粗糙度为44.87 nm，最大去除率为0.329 g/min。对表面粗糙度影响最大的因素为磨料粒度，影响最小的因素为进给速度；对材料去除率影响最大的因素为切削深度，影响最小的为进给速度。经过综合优化，最佳工艺参数组合为：砂轮600#，转速2000 r/min，切削深度0.04 mm，进给速度20 mm/min。结论 弹性聚氨酯砂轮应用于铝合金磨削可提高加工表面质量，可简化工艺流程，节省备料和安装调整时间，从而提高效率。 |
| 英文摘要: |
| The work aims to solve the problem of low polishing efficiency in traditional polishing process for aluminum alloy mobile phone shell. Grinding process for 6061 aluminum alloy was studied by using polyurethane elastic grinding wheel. Orthogonal test was performed to study the influences of abrasive particle size, feed speed, cutting depth and grinding wheel linear speed on surface roughness and material removal rate. Turning line approach was used for processing in the test, which could reduce the influence of uneven abrasive distribution. Roughness of machined surface was measured with a white light interferometer, and removal rate was obtained by calculating mass change of the workpiece in unit time. Optimal process parameters were obtained based upon comprehensive optimization of the results. In the selected 16 grinding parameters, the minimum obtainable surface roughness Ra was 44.87 nm, and the maximum removal rate was 0.329 g/min. The most important factor affecting surface roughness was abrasive particle size, and the minimum factor was feed rate. As for the material removal rate, the most important factor was cutting depth, the least was feed rate. After comprehensive optimization, the optimal combination of process parameters was: grinding wheel as 600#, speed as 2000 r/min, cutting depth as 0.04 mm, and feed rate as 20 mm/min. The application of polyurethane elastic grinding wheel to aluminum alloy grinding can improve surface quality, simplify technological process, save material preparation, installation & adjustment time, and further improve efficiency. |
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