Fabrication of freeform progressive addition lenses using a self-developed long stroke fast tool servo

被引：21
|
作者：
Feng, Haihua [1 ,2 ]
Xia, Risheng [1 ]
Li, Yiyu [1 ,2 ]
Chen, Jiaojie [1 ,2 ]
Yuan, Yimin [1 ,2 ]
Zhu, Dexi [1 ,2 ]
Chen, Siyun [1 ,2 ]
Chen, Hao [1 ,2 ]
机构：
[1] Wenzhou Med Univ, Sch Optometry & Ophthalmol, Wenzhou, Peoples R China
[2] Wenzhou Med Univ, Eye Hosp, Wenzhou, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2017年 / 91卷 / 9-12期
基金：
中国国家自然科学基金;
关键词：
Freeform; Diamond turning; Fast tool servo; Progressive addition lens; DESIGN;
D O I：
10.1007/s00170-017-0050-6
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A long stroke fast tool servo (LFTS) system with a maximum stroke range of +/- 4 mm based on the voice coil actuator was developed and integrated on a diamond turning machine (DTM) for the fabrication of freeform progressive addition lenses (PALs). The LFTS utilized a three-ring cascade control system for the motion trajectory control of a diamond tool. The numerical control codes of the tool path were transferred from the 3D surface data with freeform features. The complete process chain from tool path generation and diamond machining to power measurement was experimentally demonstrated. The obtained surface form accuracy was 6.7 mu m (rms), and the measured power of the PAL agreed well with the theoretical design indicating the desirable processing capability of LFTS for the customized freeform spectacle optics.
引用
收藏
页码：3799 / 3806
页数：8
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