| 引用本文: | 彭小强,戴一帆,李圣怡,等.回转对称非球面光学零件磁流变成形抛光的驻留时间算法.[J].国防科技大学学报,2004,26(3):89-92.[点击复制] |
| PENG Xiaoqiang,DAI Yifan,Li Shengyi,et al.Dwell Time Algorithm for MRF of Axis-symmetrical Aspherical Parts[J].Journal of National University of Defense Technology,2004,26(3):89-92[点击复制] |
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| 回转对称非球面光学零件磁流变成形抛光的驻留时间算法 |
| 彭小强, 戴一帆, 李圣怡, 尤伟伟 |
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(国防科技大学 机电工程与自动化学院，湖南 长沙 410073)
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| 摘要: |
| 介绍了一种基于代数算法的回转对称非球面计算机控制表面成形的驻留时间算法。该算法将驻留时间转化为工件自转的整数圈数，并且将抛光模对工件的材料去除效率体现到材料去除矩阵上进行计算。利用非负最小二乘法求解驻留时间向量。最后，利用该算法在自研的磁流变抛光实验装置上对一回转对称光学零件进行3次迭代加工，使其面形精度从8μm提高到0.5μm以内。 |
| 关键词: 磁流变抛光 驻留时间 计算机控制表面成形 非球面 |
| DOI： |
| 投稿日期：2004-02-23 |
| 基金项目:国家自然科学基金资助项目(50375156) |
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| Dwell Time Algorithm for MRF of Axis-symmetrical Aspherical Parts |
| PENG Xiaoqiang, DAI Yifan, Li Shengyi, YOU Weiwei |
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(College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073,China)
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| Abstract: |
| A dwell time algorithm for the magnetorheological finishing (MRF) of the small axis-symmetrical aspherical surfaces is described. The dwell time at each dwell grid is calculated as integer multiple of the workpiece rotation period. The removal rate on the surface of workpiece is transferred to a removal matrix. Nonnegative least-squares solution is used to obtain the optimal solution of the dwell time. A piece of axis-symmetrical aspherical surface glass is polished on the MRF experimental facility developed by us. After iterative polishing three times, the residual error of the workpiece decreases from 8μm to 0.5μm. |
| Keywords: MRF dwell time computer controlled optical surfacing aspherical surfaces |
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