| 内渐进镜片加工中的过切判据的研究 |
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| 引用本文： | 张佳康,陈家璧,魏叶飞,项华中,朱天凤. 内渐进镜片加工中的过切判据的研究[J]. 光学仪器, 2016, 38(4): 331-338. DOI: 10.3969/j.issn.1005-5630.2016.04.010 |
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| 作者姓名： | 张佳康 陈家璧 魏叶飞 项华中 朱天凤 |
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| 作者单位： | 1. 上海理工大学 光电信息与计算机工程学院,上海,200093;2. 上海理工大学 光电信息与计算机工程学院，上海 200093; 上海理工大学 医疗器械与食品学院，上海 200093;3. 上海理工大学 医疗器械与食品学院,上海,200093 |
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| 摘 要： | 针对内渐进镜片在加工过程中出现过切的情况,提出一种判断方法。该方法使用双三次样条曲面参数方程计算自由曲面各点曲率半径最小值,通过三维软件对曲面曲率半径进行计算,研究镜片在机床上实现加工的判据。由分析和计算表明,若曲面加工范围内存在某些点的曲率半径小于给定的机床刀具半径,则机床无法加工内渐进镜片的曲面。
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| 关 键 词： | 内渐进镜片 自由曲面 加工 过切 曲面曲率半径 |
| 收稿时间： | 2015-11-12 |
Research of the causes of over-cutting on the process of interior progressive addition lenses |
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| ZHANG Jiakang,CHEN Jiabi,WEI Yefei,XIANG Huazhong and ZHU Tianfeng. Research of the causes of over-cutting on the process of interior progressive addition lenses[J]. Optical Instruments, 2016, 38(4): 331-338. DOI: 10.3969/j.issn.1005-5630.2016.04.010 |
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| Authors: | ZHANG Jiakang CHEN Jiabi WEI Yefei XIANG Huazhong ZHU Tianfeng |
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| Affiliation: | University of Shanghai for Science and Technology,University of Shanghai for Science and Technology,,, |
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| Abstract: | Some progressive addition lenses are over cut during the processing. This paper proposes a method. It obtains the least value of the surface curvature radius of the free surface by calculating the parametric equation of the double three spline surface. The least value of the surface curvature radius is calculated by 3D software. Study on the reason of lenses why it can be processed. The result indicates that if the surface curvature radius of some points is less than the radius of machine tool, the surface can not be processed. |
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| Keywords: | interior PAL free-form surface process over-cutting surface curvature radius |
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